Seeds germinate best when provided with optimum light, temperature and moisture. Starting the seeds indoors gives you control over the climate, unlike when you try to grow seeds outdoors in fickle spring weather. The growing media gives you further control over moisture. A peat-based media supplies drainage that combats sogginess and compaction while retaining enough moisture for healthy germination and growth. Peat isn't suitable on its own and requires the addition of other elements to provide an optimum growing base.
Combine one part peat with one part vermiculite and one part perlite. Use a fine-textured peat because large pieces may block tender roots and sprouts from spreading. Vermiculite and perlite are inorganic volcanic compounds that provide aeration and further drainage to the organic peat mix.
Fill the seedling containers with the peat mix to within 1/4-inch of their rims. Water the peat until it's thoroughly moistened and water drains from the bottom of the container. Empty the drainage tray under the containers and allow them to set for approximately one hour so the peat can absorb the moisture adequately.
Sow the seeds on the soil surface. Plant two seeds per container, or sow the amount of seeds recommended on the seed packet.
Cover the seeds with moistened plain peat moss. Most seeds require a covering 1/4-inch thick or equal to twice the width of the seed, but planting depth requirements vary between plants so refer to the seed packet for exact planting depths.
Cover the containers with a sheet of clear plastic to help maintain the moisture in the soil during the germination period. Place the covered containers in a warm 70 to 75 degree Fahrenheit location. Select a brightly lit location for seed varieties that require light for germination.
Remove the plastic after the seeds sprout. Provide the seedlings with eight hours of sun or fluorescent lighting each day and keep the soil moist but not soggy.
Things You Will Need
- Fine-textured peat
- Seedling containers
- Clear plastic
- Peat, vermiculite and perlite are naturally sterile so harbor no disease or pest organisms. Use only new growing media components when starting seeds because reused media may cause disease problems on tender young plants.
- Store excess peat and media ingredients in a sealed plastic bag or bucket to protect them from pests and disease.
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