Why Are My Seeds Not Germinating After 7 Days? Troubleshooting Common Issues
Why Are My Seeds Not Germinating After 7 Days? Troubleshooting Common Issues
It’s an incredibly frustrating experience, isn’t it? You’ve carefully prepared your seed-starting mix, gently sown your precious seeds, watered them with anticipation, and set them in what you thought was the perfect spot. Then, day after day, you check, and… nothing. After a week, the question echoes in your mind: Why are my seeds not germinating after 7 days? You’re not alone in this horticultural mystery. Many gardeners, from seasoned pros to enthusiastic beginners, have faced this very same dilemma. My own garden has seen its share of stubborn seeds that refused to sprout, and each time, it’s a puzzle to unravel. This isn’t just about waiting; it’s about understanding the intricate needs of tiny life waiting to emerge.
The initial days of waiting are filled with hope. You envision those first tender green shoots pushing through the soil, signaling the start of a successful growing season. But when the 7-day mark passes without any visible signs of life, it’s natural to feel a pang of worry. This article aims to demystify the common reasons why seeds might be taking their sweet time, or worse, failing to germinate altogether. We’ll delve into the critical factors that influence germination and provide practical, actionable steps to help you diagnose and rectify the problem. Think of this as your comprehensive guide to coaxing those reluctant seeds into action.
The Clock is Ticking: Understanding Seed Germination Timelines
Before we dive into the potential culprits, it’s important to establish a baseline. While 7 days might seem like a long time, germination periods can vary significantly depending on the seed type. Some seeds, like lettuce or radish, can sprout in as little as 3-5 days under optimal conditions. Others, such as peppers or tomatoes, might take anywhere from 7 to 14 days. Then you have the slow pokes – beans, peas, and some varieties of herbs can take even longer, sometimes 2-3 weeks. And let’s not forget about seeds with hard coats or those requiring stratification (a period of cold treatment), which can take months.
So, when you ask, “Why are my seeds not germinating after 7 days?” the first step is to consult your seed packet. It usually provides an estimated germination time. If the expected window hasn’t closed yet, patience might be your best friend. However, if the 7-day mark has passed and your seeds are supposed to be germinating much faster, it’s time to investigate.
My personal experience has taught me that sometimes, even with the right conditions, a batch of seeds might just be a bit sluggish. I once had a packet of basil seeds that took nearly two weeks to show life, while another packet from the same brand germinated within five days. It highlights that there’s a natural variation, but also that something might be amiss if there’s a consistent lack of germination across multiple seeds.
The Essential Trio: Moisture, Temperature, and Oxygen
Seed germination is a delicate dance, and at its core, it relies on three fundamental elements: moisture, temperature, and oxygen. Without these in the right balance, seeds simply won’t wake up. Let’s break down how each of these can be a reason for your seeds not germinating after 7 days.
Moisture: The Lifeblood of Germination
Moisture is arguably the most critical factor for seed germination. Seeds contain a dormant embryo and stored food. When a seed absorbs water (a process called imbibition), it swells, activates enzymes, and begins to break down stored food reserves to fuel growth. Too little water, and the process never starts. Too much water, and you can drown the seed, leading to rot.
- Too Dry: This is a very common reason for seed failure. If the soil surface dries out completely, the imbibition process halts. Even if you water again, the seed may be damaged or have lost its viability. This is especially problematic for smaller seeds that sit closer to the surface and dry out faster.
- Too Wet: Waterlogged soil deprives the seed of essential oxygen. Seeds need to breathe! Prolonged saturation creates anaerobic conditions, which can lead to fungal diseases like damping-off, which literally rots the seed or seedling before it can establish itself. You might notice a slimy or moldy appearance around the seeds if this is the case.
Expert Insight: The ideal moisture level is consistently damp, not soaking wet. Think of a wrung-out sponge. This provides enough water for imbibition without suffocating the seed. For beginners, using a spray bottle to mist the surface regularly can be a more controlled way to maintain this consistent moisture level, especially in the initial stages.
Temperature: The Germination Thermostat
Temperature plays a crucial role in regulating the speed and success of germination. Each plant species has an optimal temperature range for germination. If the temperature is too cold, enzymatic activity slows down dramatically, and germination may be delayed or fail altogether. If it’s too hot, the seed can be damaged, or it might germinate too quickly, resulting in weak, leggy seedlings that are prone to disease.
- Too Cold: Many common garden vegetables, like tomatoes, peppers, and melons, are warm-season crops. They require soil temperatures typically between 70-85°F (21-29°C) to germinate effectively. If you’re starting seeds indoors and the room is cool, or if you’re direct-sowing in the garden when the soil is still cold, germination will be sluggish or non-existent.
- Too Hot: While less common for indoor seed starting unless placed near a heat source, overly high temperatures can also be detrimental. Some seeds have an upper limit beyond which they simply won’t germinate or will be severely weakened.
My Experience: I learned the hard way about temperature with peppers. I was trying to start them in a cool basement room, and after a week, nothing. I moved them to a warmer spot, and within days, I saw sprouts. Using a seed-starting heat mat is a game-changer for warm-season crops, ensuring they have the consistent warmth they crave.
Oxygen: The Breath of Life
Just like us, seeds need to respire, which means they need oxygen. Oxygen is crucial for the metabolic processes that break down stored food and fuel the embryo’s growth. Compacted soil or overly wet conditions limit the amount of oxygen available to the seed.
- Compacted Soil: Heavy, clay-rich soils or seed-starting mixes that have been pressed down too firmly can restrict air pockets, starving the seed of oxygen.
- Waterlogged Conditions: As mentioned earlier, standing water displaces air, creating an anaerobic environment where seeds cannot respire.
Tip: Using a light, fluffy seed-starting mix and avoiding the urge to pack it down too tightly will help ensure adequate oxygen supply. Gently firming the soil around the seeds is usually sufficient.
Seed Quality and Viability: The Foundation of Success
Even under perfect conditions, seeds won’t germinate if they aren’t viable in the first place. Seed viability refers to the seed’s ability to germinate and grow into a healthy plant.
- Old Seeds: Seed viability decreases over time. While some seeds can remain viable for many years, others, like onions or parsley, have a much shorter lifespan. If your seeds are old, the germination rate will naturally be lower, and some may be completely non-viable.
- Poor Storage: Seeds need to be stored in cool, dry, dark conditions. Exposure to heat, moisture, or light can significantly degrade their viability.
- Seed Damage: Seeds can be damaged during harvesting, processing, or even handling. Crushed or damaged seeds are unlikely to germinate.
- Improper Treatment: Some seeds require specific treatments like scarification (nicking the seed coat) or stratification (cold treatment) to break dormancy. If these steps were omitted, the seeds might not germinate.
How to Test Viability: You can perform a simple germination test before sowing a large batch. Take about 10 seeds and place them on a damp paper towel inside a sealed plastic bag. Keep it in a warm, dark place. After a week or so, count how many seeds have sprouted. If fewer than 50% germinate, the batch is likely old or of poor quality.
I always make a point of checking the “packed for” date on seed packets. While not always a perfect indicator, it gives you a clue. If I’m using seeds from my stash that are a few years old, I’ll often sow an extra few just in case of lower germination rates.
Sowing Depth: Too Shallow or Too Deep?
The depth at which you plant your seeds is another critical factor. Different seeds have different ideal sowing depths, which is usually indicated on the seed packet.
- Planted Too Deep: If seeds are sown too deeply, the seedling may exhaust its stored energy reserves trying to reach the surface, or it might not have enough energy to emerge at all. This is particularly true for small seeds.
- Planted Too Shallow: Seeds planted too shallowly are more prone to drying out quickly. They also may not be anchored firmly enough to develop strong roots. Sometimes, shallowly sown seeds can even be dislodged by watering.
General Rule of Thumb: A common guideline is to plant seeds at a depth that is two to three times their diameter. For very fine seeds like petunias or snapdragons, you might only need to press them lightly onto the surface of the soil and not cover them at all, as they require light to germinate. For larger seeds like beans or peas, a depth of 1-2 inches is often appropriate.
My Personal Check: When I’m unsure about sowing depth, I often refer back to the seed packet. If it’s a generic mix, I lean towards the “two to three times the seed’s diameter” rule, adjusting for seed size. I’ve definitely had tiny seeds fail because I buried them too deep, thinking they needed more protection.
Seed-Starting Medium: The Right Foundation Matters
The material you use to start your seeds plays a significant role in their ability to germinate and thrive. This isn’t just about holding the seed; it’s about providing the right balance of moisture retention, drainage, aeration, and nutrients (or lack thereof, initially).
- Using Garden Soil: While tempting, using regular garden soil for seed starting is often a mistake. Garden soil can be too dense, leading to poor aeration and drainage. It may also contain weed seeds or pathogens that can harm your delicate seedlings.
- Poor Quality Seed-Starting Mix: Not all seed-starting mixes are created equal. Some may be too heavy, too light, or lack the necessary components for good germination. A good seed-starting mix should be fine-textured, sterile, and provide excellent drainage and aeration.
- Overly Rich Mix: Seedlings don’t need a lot of nutrients to start. In fact, a mix that is too rich can sometimes inhibit germination or lead to leggy growth. Most seed-starting mixes are designed to be low in nutrients, with feeding starting once the first true leaves appear.
What to Look For: A quality seed-starting mix typically contains ingredients like peat moss, coco coir, perlite, and vermiculite. These provide a sterile, well-draining, and airy environment. It should feel light and fluffy.
Light Requirements: Not Always Necessary for Germination
This is a point of frequent confusion for gardeners. While light is essential for plant growth after germination (for photosynthesis), most seeds do not require light to germinate. In fact, some seeds are inhibited by light and will only germinate in darkness.
- Seeds Requiring Darkness: Many seeds, especially smaller ones, are naturally programmed to germinate underground where it’s dark. Covering them with the appropriate depth of soil provides this darkness.
- Seeds Requiring Light: A small percentage of seeds, like some primroses, begonias, and snapdragons, need light to trigger germination. These are typically very fine seeds that are sown on the surface and not covered. If you accidentally cover them too deeply, they won’t sprout.
The Takeaway: For the vast majority of seeds, the darkness provided by covering them with soil is exactly what they need. If your seeds are not germinating after 7 days and you suspect a light issue, double-check your seed packet’s instructions. If it’s a standard vegetable seed, light is usually not the limiting factor for germination itself.
Environmental Factors: Beyond Moisture, Temp, and Oxygen
While moisture, temperature, and oxygen are the big three, other environmental factors can influence whether your seeds are germinating after 7 days or not.
- Air Circulation: Good air circulation is important to prevent fungal diseases like damping-off, especially in humid environments. While not directly a germination trigger, poor air circulation can kill seedlings that have just emerged or are about to emerge, making it look like they never germinated.
- Seed Depth Consistency: Inconsistent sowing depth across your tray or pot can lead to uneven germination. Some seeds might be perfectly placed, while others are too deep or too shallow.
- Contamination: While seed-starting mixes are usually sterile, using contaminated containers or tools can introduce pathogens that prevent germination or kill seedlings.
Common Scenarios and Solutions: A Step-by-Step Approach
Let’s walk through some common scenarios where seeds aren’t germinating after 7 days and how to tackle them. This is where we start troubleshooting like a seasoned detective!
Scenario 1: Seeds are in a consistently damp but cool environment, and the seed packet says 7-10 days for germination.
Analysis: The moisture is likely good, but the temperature might be too low, especially if they are warm-season crops. The 7-day mark might just be the beginning of their expected germination window.
Action Plan:
- Check Temperature: Use a soil thermometer to measure the temperature of your seed-starting medium. If it’s below the optimal range for your specific plant type (refer to your seed packet or online resources), you need to increase the temperature.
- Introduce a Heat Mat: For warm-season crops like tomatoes, peppers, eggplant, and melons, a seed-starting heat mat placed beneath the seed tray is highly effective. These mats provide consistent bottom heat.
- Relocate: If you don’t have a heat mat, move the seed tray to a warmer location in your home, such as on top of a refrigerator (but be careful not to overheat!) or near a heating vent (again, with caution).
- Be Patient: If the temperature is borderline, they might just be slower to germinate. Give them a few more days, especially if you’ve recently corrected the temperature.
Scenario 2: Seeds are in a warm environment, but the soil surface looks dry, and you’ve watered sparingly.
Analysis: This points to insufficient moisture. The seeds may have started imbibing water but stopped when the surface dried out, or they simply haven’t received enough water to initiate the process.
Action Plan:
- Water Thoroughly (but Carefully): Gently water the seed tray until the soil is evenly moist throughout. You can use a watering can with a fine rose or the bottom-watering method.
- Bottom Watering: Place your seed tray in a larger container filled with about an inch of water. Let the soil absorb water from the bottom up. Once the surface appears moist, remove the tray and let excess water drain away. This method prevents disturbing the seeds and ensures even moisture.
- Cover for Moisture Retention: If your seedlings are in pots or trays, covering them with a clear plastic dome, plastic wrap, or a clear plastic bag can help retain moisture. Ensure there’s still some ventilation to prevent mold.
- Consistent Misting: For the next few days, regularly mist the soil surface with a spray bottle to keep it consistently damp.
Scenario 3: Seeds are in warm, moist conditions, but there’s a noticeable mold or a foul smell.
Analysis: This is a classic sign of overwatering and poor aeration, leading to fungal growth and potential rot. The seeds are essentially drowning and being attacked by pathogens.
Action Plan:
- Improve Drainage: Ensure your seed-starting containers have adequate drainage holes. If they don’t, you might need to repot into suitable containers.
- Reduce Watering: Water only when the top inch of soil starts to feel dry. Avoid letting the soil sit in standing water.
- Increase Air Circulation: Remove any plastic covers that might be trapping too much humidity. Use a small fan on a low setting to gently move air over the seed trays for a few hours each day. This helps dry the surface and discourages fungal growth.
- Remove Affected Areas: If you see mold on the soil surface, you can try to gently scrape it away with a toothpick. However, if the seeds themselves appear rotten or mushy, they are likely lost.
- Consider Sterilization: If this is a recurring problem, you may need to sterilize your containers and tools more thoroughly or use a fresh batch of sterile seed-starting mix.
Scenario 4: You’ve used old seeds, and after 7-10 days, only a few have germinated, or none at all.
Analysis: This strongly suggests low seed viability due to age or improper storage.
Action Plan:
- Perform a Viability Test: As described earlier, take about 10 seeds from the packet and place them on a damp paper towel in a plastic bag. Monitor for germination over a week. If fewer than 5 sprout, the batch is likely compromised.
- Sow More Seeds: If you have more of the same seeds, sow a larger quantity to compensate for the expected lower germination rate.
- Consider Newer Seeds: For critical plantings, it’s often best to purchase fresh seeds.
- Adjust Expectations: If you decide to proceed with old seeds, understand that germination rates will be lower, and be prepared for more empty cells or weaker seedlings.
Scenario 5: You’ve sown seeds that require stratification or scarification, and you haven’t performed these steps.
Analysis: Seeds like some perennials, herbs (e.g., lavender, rosemary), and certain tree or shrub seeds have hard coats or require a period of cold to break dormancy. Skipping these steps means the seeds will remain dormant.
Action Plan:
- Research Your Specific Seeds: Consult your seed packet or reliable gardening resources to determine if your seeds require scarification or stratification.
- Scarification: If scarification is needed, you’ll gently nick the seed coat with a knife or rub it with sandpaper to allow water to penetrate. Be careful not to damage the embryo inside.
- Stratification: For cold stratification, mix the seeds with a moist medium (like peat moss or vermiculite) and place them in a sealed plastic bag or container. Store this in the refrigerator (not freezer) for the duration specified by the seed type (often 4-12 weeks).
- Restart the Process: Once the necessary treatment is complete, sow the seeds according to standard procedure. Remember, stratification extends the overall germination timeline significantly.
Specific Seed Type Considerations
Different plant families have slightly different germination needs. Knowing these can help you fine-tune your approach when seeds aren’t germinating after 7 days.
Vegetables:
- Root Vegetables (Carrots, Beets, Radishes): These generally prefer cooler soil temperatures and consistent moisture. Radishes are quick germinators (3-7 days). Carrots can be slower and sometimes have lower germination rates, often benefiting from soaking seeds beforehand. Beets are usually reliable but can be slow if the soil is too cold.
- Fruiting Vegetables (Tomatoes, Peppers, Cucumbers, Melons): These are classic warm-season crops. They absolutely need consistent warmth (70-85°F soil temp) and moist, well-draining soil. If any of these are dormant after 7 days, temperature is the most likely culprit.
- Leafy Greens (Lettuce, Spinach, Kale): Most germinate relatively quickly (5-10 days) in cooler to moderate temperatures. Some varieties of lettuce can become dormant if the soil gets too warm, so keeping them on the cooler side is often better.
- Legumes (Beans, Peas): These are generally easy and fast germinators (5-10 days) in warm soil. They need good drainage; waterlogged soil can cause them to rot.
Herbs:
- Fast Germinators (Basil, Cilantro, Dill): These typically sprout within 7-14 days under good conditions, needing consistent moisture and moderate warmth.
- Slow Germinators (Parsley, Oregano, Thyme): These can take 14-21 days or even longer. Parsley seeds can be a bit tricky and sometimes benefit from soaking.
- Very Slow/Difficult (Rosemary, Lavender): Rosemary seeds often require scarification or stratification and can take 3-4 weeks or more. Lavender also benefits from cold stratification.
Flowers:
- Annuals (Marigolds, Zinnias, Petunias): Most annuals are fairly quick and easy, germinating within 7-14 days in warm, moist conditions. Some fine seeds, like petunias, require light.
- Perennials: Germination times vary wildly. Many perennials require stratification (cold treatment) to mimic overwintering, so they can take weeks or months and often have lower germination rates.
This diversity underscores why simply waiting 7 days without context isn’t always enough. You must consider the specific needs of the plant you’re trying to grow.
The Role of Seed Coating and Pelleted Seeds
Many modern seed packets contain coated or pelleted seeds. This coating is a mix of inert material like clay or other binders, designed to make tiny seeds larger and easier to handle, sow accurately, and sometimes includes fungicides or nutrients.
- Potential Issues: While beneficial, the coating can sometimes hinder germination if it doesn’t break down properly or if it prevents adequate moisture penetration. This is more common if the coating is too thick or if conditions aren’t consistently moist.
- Action: Ensure the coating is thoroughly moistened. If you suspect a coating issue, you might try gently breaking it apart with your fingers when sowing, or ensure your watering method adequately saturates the coating.
Common Mistakes to Avoid
To prevent future “why are my seeds not germinating after 7 days” crises, here are some common mistakes to steer clear of:
- Overcrowding Seeds: Planting too many seeds in one small container or cell can lead to competition for resources and potential fungal issues.
- Using Old or Unreliable Seed-Starting Mix: Always opt for a sterile, fine-textured seed-starting mix.
- Impatience with Slow Germinators: Understand that not all seeds are fast sprouters. Research your seeds!
- Incorrect Watering Technique: Whether too much or too little, improper watering is a top killer of germinating seeds.
- Ignoring Seed Packet Instructions: These packets are packed with valuable information tailored to that specific seed variety.
Frequently Asked Questions (FAQs)
Q1: My seeds look like they are just sitting there. Is there anything I can do to speed them up?
A: Generally, you can’t force a seed to germinate faster than its natural biological clock allows. However, you can ensure that the conditions are *optimal* for it to germinate as quickly as it’s programmed to. This means ensuring consistent, appropriate moisture (damp, not soggy), the correct temperature range for that specific seed type, and adequate oxygen. For seeds that require it, providing bottom heat with a seed-starting mat is often the most effective way to speed up germination for warm-season crops. For seeds with hard coats, sometimes soaking them in lukewarm water for a few hours (check if this is recommended for your specific seed type) can help soften the coat and initiate the imbibition process, potentially leading to quicker germination once planted.
It’s also important to distinguish between true dormancy and simply slow germination. Some seeds, particularly those from certain perennial flowers, herbs, or trees, have evolved to require specific triggers like a period of cold (stratification) or physical damage to their seed coat (scarification) to break dormancy. If your seeds fall into this category, no amount of warmth or moisture will make them sprout until these pre-treatment requirements are met. Always consult your seed packet or reputable gardening resources to understand if your seeds have any special requirements beyond basic warmth, moisture, and light.
Q2: Why are my seeds not germinating after 7 days, but they look fine? Could it be a disease?
A: Yes, diseases like damping-off can absolutely be a reason why seeds fail to germinate or appear healthy but don’t grow. Damping-off is a common fungal disease that affects seedlings, often caused by *Pythium*, *Phytophthora*, or *Rhizoctonia* species. These fungi thrive in cool, damp, and poorly aerated conditions. They can attack the seed itself, causing it to rot before it even sprouts, or they can infect the seedling stem just at the soil line shortly after it emerges, causing it to collapse and die. If you suspect damping-off, you might notice a moldy or fuzzy growth on the soil surface or a mushy, discolored stem at the base of any emerged seedlings.
Preventing damping-off is key. Always use a sterile seed-starting mix and clean containers to minimize the introduction of fungal spores. Avoid overwatering; keep the soil consistently moist but not waterlogged. Ensure good air circulation around your seed trays by using a small fan on a low setting for a few hours daily, especially in humid environments. If you’ve had issues with damping-off in the past, consider using a fungicide specifically labeled for seed starting as a preventative measure, following the product’s instructions carefully. Sometimes, if the seeds have already been infected, there isn’t much you can do, and you’ll need to discard the affected soil and start again with fresh, sterilized materials.
Q3: I’ve heard some seeds need light to germinate. If I covered mine too deeply, could that be why they aren’t germinating after 7 days?
A: That’s a great question, and it highlights the importance of reading seed packet instructions carefully! For the vast majority of vegetable and herb seeds, light is NOT a requirement for germination; in fact, many seeds are inhibited by light and need darkness to sprout. This is why covering them with soil is essential. However, there is a small percentage of seeds, particularly some ornamental flowers like certain varieties of petunias, snapdragons, lobelia, and primulas, that require light to trigger germination. These tiny seeds are often sown on the surface of the soil and simply pressed in, not covered.
If you are trying to germinate seeds that require light and you have covered them too deeply, then yes, this could absolutely be the reason they are not germinating after 7 days (or even much longer). The seed coat effectively blocks the light necessary for the germination process to begin. If you suspect this is the issue, and the seeds are still in the tray, you can try gently scraping away a thin layer of the topsoil to expose them to light. However, if the seeds have been buried too deeply, they may have also exhausted their initial energy reserves trying to push through the soil, and their chances of survival might be diminished. For future plantings of light-requiring seeds, be sure to follow the instructions precisely, which will typically state to sow them on the surface and provide good light exposure.
Q4: How long is too long to wait for seeds to germinate? When should I give up?
A: The definition of “too long” is entirely dependent on the specific plant species you are trying to germinate. As we’ve discussed, some seeds, like radishes or lettuce, can sprout in as little as 3-5 days under ideal conditions, so 7 days with no sign might indicate an issue. Other seeds, like peppers or tomatoes, might take 7-14 days, meaning 7 days is still well within their expected germination window. Then you have seeds like parsley, rosemary, or many perennial flowers that can take 2-4 weeks, or even months, especially if they require stratification.
A good rule of thumb is to consult your seed packet for the expected germination time. If you have passed the maximum end of that range by a few days to a week, and you have checked and confirmed that the conditions (moisture, temperature) are optimal, it’s reasonable to start suspecting the viability of the seeds or another underlying issue. For seeds that are expected to germinate quickly (under 10 days), and you see nothing after 7-10 days with ideal conditions, it’s probably time to consider if the seeds are old, damaged, or if there was an environmental problem.
For seeds with longer expected germination times, you must be patient. Sometimes, a batch of seeds that is slow to start will eventually come around. If you’ve waited the maximum expected time (e.g., 3-4 weeks for slower seeds) and still see no germination, and you are confident in your conditions, then it’s likely the seeds are not viable. You might perform a viability test on a few remaining seeds to confirm. Ultimately, while patience is key, there comes a point where it’s more productive to re-sow with fresh seeds or try a different variety.
Q5: I used a seed starting mix, but my seeds are not germinating after 7 days. What else could be wrong?
A: Even with a good seed-starting mix, other factors can prevent germination. Let’s consider these:
-
Temperature: Is the environment warm enough (or cool enough, for some specific seeds)? Many seeds, especially warm-season vegetables like tomatoes and peppers, require consistent soil temperatures in the 70-85°F range. If your room is cooler, germination will be slow or nonexistent. Using a heat mat is often essential for these plants.
-
Moisture: While the mix is designed for good drainage, it still needs to be kept consistently moist. If the surface dries out frequently, or if the mix is allowed to become waterlogged, germination can be inhibited or seeds can rot. The ideal is for the mix to feel like a wrung-out sponge.
-
Seed Viability: Are the seeds old? Were they stored properly? Even good seed-starting mix can’t revive dead seeds. If the seeds are past their prime, they may have lost viability.
-
Sowing Depth: Were the seeds planted too deep or too shallow? Small seeds often need to be sown very shallowly or even just pressed onto the surface, while larger seeds require more depth. Incorrect depth can prevent emergence.
-
Specific Requirements: Do your seeds require stratification (a cold period) or scarification (nicking the seed coat)? If so, and these steps weren’t performed, they may remain dormant.
-
Light (for some): While most seeds don’t need light to germinate, a few specific types do. If you buried these seeds, they won’t sprout.
If you’ve confirmed your seed-starting mix is appropriate and conditions are optimal, revisit these other critical factors. A small soil thermometer can be invaluable for monitoring temperature accurately.
It’s a journey of observation and adjustment. By systematically checking each of these elements, you can pinpoint why your seeds are not germinating after 7 days and take the necessary steps to ensure future success. Happy gardening!