Sowing seeds in pots and trays in a greenhouse, hoop house, window sill or in a sunroom, allows plants to be started earlier than would be possible outdoors. Raising seedlings indoors also protects them from pests, when they are most venerable. This method is particularly appropriate for tender plants but can be applied to hardy plants as well,
Seedlings can be growing in trays while the garden where they will be planted is still occupied by other plants.

Where to Sow.- A greenhouse or cold-frame is an excellent place in which to raise plants from seeds. These structures provide good all around light. Bottom Heat is the most economical method to use either with a thermostatically controlled heated propagator or a heated bench. The best temperature range for seed germination for most plants is 65-70F (18-21C).

Seedlings can be raised in the house; however it may be difficult to provide enough life to keep them from becoming spindly. It is important to have the correct temperature and moisture for proper germination. As soon as the seedlings emerge place near a window or on a window sill. If you are using a window sill it will be necessary to turn the trays every couple of days.

What to Sow in- You can sow in a wide range of containers, either purchased or recycled from house hold items. The basic requirement is that whatever use allows for adequate drainage, is robust enough for the job, and is free from disease organisms as well as chemicals which could be poisonous to the plants.

Pots- Clay pots are porous, allowing air to reach the roots and moisture to evaporate through the clay, reducing problems caused by over-watering. They are however more expensive than plastic and cleaning them is more difficult. Plastic pots need less watering, which has its advantage when using soil-less growing medium, which dry out faster than loam-based mediums. Biodegradable Cowpots, made of  fiber or similar material, are transplanted with the plants intact will minimize root disturbance.

Seed Trays- typically are 2-3in.(5-7cm) deep and come in different sizes are typically made of plastic and are easy to clean and use. Wood trays are more expensive and hard to come by.

Cell Packs- also know as Module Trays are multi-celled trays- are available in plastic or polystyrene. Seedlings grow in individual ‘mini pots’ so their root system is not disturbed when transplanted. Root trainers, deeper than the cell packs encourage a healthy root system and are ideal for crops like sweet peas, corn, and beans.

Home made pots- can be made from egg cartons, yogurt cups, margarine containers, take out containers, and the like. Just make sure that containers have sufficient drainage and have been thoroughly cleaned before use to better ensure proper seed germination.