Starting Seeds
COMMON SEED GERMINATION PROBLEMS:
Seeds are planted too deep - We list this problem first, because many seeds end up too deep in the soil, and never see the light of day. Before planting, check the seed packet or this Planting Guide. Make sure to plant the seeds no deeper than the depth indicated. For tiny or fine seeds (and pelleted seed), we usually recommend to sow them on top of the soil, and water them in.
Heavy, compacted soil. Heavy, compacted soil makes it difficult for young seedlings to emerge into the spring air. If you have clay or other heavy soil, use a light soil or seed starting mix to cover your seeds. A seed starting mix is finer than regular mixes and is recommended for starting seeds inside.
Temperature. Temperature is an important trigger to seeds. Nature causes each type of seed to awaken at a certain temperature, below which they will not sprout. Most flower seed varieties like constant warmth to germinate. We often use an electric heating mat. Raising the soil temperature will increase seed germination rates and decrease germination times. Some varieties like cooler temperature. Windowsills provide widely fluctuating temperatures and are not good locations for starting seeds.
Moisture. Seed must be kept consistently moist after planting. We use clear plastic domes over our seed trays to prevent drying out. A little moisture is all that's needed. A lot of water, especially for prolonged periods, causes seeds to rot in the soil. In the garden you can increase drainage by elevating the soil, or using raised beds. This is especially useful in rainy, spring weather.
