Table of Contents
Are seedlings OK in direct sunlight?
Work your way up to giving plants direct morning sun, followed last by noon-day sun. By the end of the hardening-off time frame, seedlings should be experiencing the same amount of sunlight they'll receive in the garden.
How much direct sunlight Do seedlings need?
In general, seedlings should receive roughly 14 to 16 hours of light a day when situated in a south-facing window. This can be very difficult to achieve, and most growers opt to use artificial lights for their seedlings. These fluorescent lights should be left on for 12 to 16 hours a day.