How to choose the right tray for your seedlings. Learn how to choose the right size cell pack or pot to transplant seedlings into. Seedlings grow best when their roots have room to grow.

Start seeds in a greenhouse to:
Save money. Seeds cost less than plants. Grow special varieties that are only available as seeds. Or use seeds you saved. Extend the growing season. Time your

A seedling heat mat is a waterproof plastic mat. It heats your soil by about 10-20°F or 6-11°C warmer than the air temperature. It keeps the soil at a constant temperature and helps the seeds g

You can use slot trays to start lots of seeds in a small space. Do this when space is limited, seed is old, germination rate is low, or seed is too small to handle.