Seed Germination Guide
Good Seed Germination Starts With Great Seeds!
At 2BSeeds we can assure you that you are getting the best seed available and the highest quality seed in each of our packages. We buy from the best suppliers and breeders, we pre-test all of our seed in house and by an independent laboratory before packing and shipping to you, and we only accept seeds that exceed USDA standards. Some of the most common reasons for failure to germinate are:
Moisture levels are inconsistent - Do keep soil damp and cover with plastic or with a clear tray until germination. After you have sown your seeds and they begin to absorb water, even a short period of moisture inconsistency can stop germination.
Incorrect depth – Some seeds need a generous 1” of soil covering them in order to sprout (like beans). Others should not be covered at all and should only be lightly pressed into the soil, because light must reach them to induce germination. It is also possible to plant seeds to shallow as well. Some seeds germinate best when they are well covered and in darkness. However – a rule to consider is the smaller the seed, the more light it may need for germination or it should be planted closer to the soil line. With that said, there are still exceptions to this, for instance Pansies should be covered lightly with a vermiculate type covering. Just remember that there is always an exception. It’s easy to sow at incorrect depths during the spring planting frenzy. Watch your seed planting depths for the best results.
Fungus - Damping Off – At some time or another every gardener will eventually be confronted with this fungal problem! Seeds will simply rot in the soil and not germinate at all, or they will sprout thin little stems and simply fall over and die. This disease can rapidly wipe out an entire plug tray in a very short time. To prevent this problem the first thing to do is to use clean pots and trays for planting. If you want to reuse containers from the previous season, make sure to wash them extremely well first with a 10% bleach solution (9 parts water, 1 part bleach). Never use garden soil from your yard to start seeds with. It can likely contain fungus spores. Only use sterile seed starting soil from your local garden center. After sowing your seeds, be careful to keep your soil moist but do not over water. If possible, water from below by pouring water into the tray. The air circulation in your home is also an important prevention for your seeds. Have a small fan around the plug tray, and keep it blowing on ‘low’ during the day. Have it circulating around the flat, but not blowing directly on it as it could dry out the soil too quickly. And one last note, if you have sown a lot of seeds in a small amount of space, absolutely thin out the seedlings when too many sprout. Because if they are too close, the tiny stems are a moist jungle for fungal growth.
Light Requirements – Make sure to keep your grow lights on for at least 14-16 hours. This is important because artificial light is not as strong as sunlight, as some seeds need intense light exposure to germinate. Conversely, some seeds will only sprout in darkness. Be sure to cover them to the recommended depth, and turn your grow light on as soon as you see sprouts. Adjust your light height as the plants grow. Seedlings should be almost touching your grow light, and never more than 2” away from it. When they start to stretch, they are telling you that they are not getting enough light.
Temperature –If your plug trays are close to a sunny window, make sure to monitor them carefully so they do not bake in the heat and dry out. Most seeds require a specific temperature range for germination to occur. Pepper and tomatoes for instance, mostly are easy to grow, will do better with a heat mat underneath until they sprout. And sweet peas will grow better in a cooler room that is only 55-65 degrees.
Hard Seed Coat –Morning Glories and Sweet Peas are a few of the seeds that have hard seed coats and require scarification. They have a hard shell for protection, and to keep them viable. Normally the weather conditions of winter and early spring help to break down this coat naturally. There are two easy methods that you can get these ready for germination, you can soak them for 24 hours or nick them with a file before planting where as to weaken the seed coat.
Perennials Need a Cold Treatment –Perennial seeds require the fluctuating temperature to be cold and moisture to germinate. In most cases, what you can do is do a little faux winter. It is not really necessary for the seed to spend the cold months in the ground, as long as it thinks it did. This deception can easily be performed by placing the seeds in a small container with moist (not wet) sand, peat or vermiculite, and leaving it in a refrigerator for four to six weeks.
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