Growers will learn how and when to start planting swiss chard seeds in trays inside a greenhouse.

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 germinate. This is called bottom heat.

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.

Growing your own seedlings in is a great way to save money and extend the growing season. You will need to care for your seedlings every day for many weeks in a greenhouse. These simple tips will help you grow healthy seedlings for the success of your farm business.

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 sowing dates to have your seedlings ready to transplant as soon as danger of frost is past. Your large seedlings will have a head start against weeds. Get to market sooner with early planting dates.