Monday, September 2, 2013
Lettuce is a cool season leafy green. The seeds will not germinate well in ground temps above 70 degrees F.
There are a couple of options for summer time seeding. You can grow in shade, cover with a shade cloth or start your seedlings indoors and transplant outdoors.
I like to start in flats in the shade, close to the watering can on the east side of the house. The seedlings will be up in 7 days if kept well watered. I let them grow until they have the first set of true leaves and are about 2” tall. I then transplant them into their permanent home, keeping them well watered for another couple of weeks.
If you want to direct seed in your flower bed, dig a shallow trench about a half inch deep, fill with potting soil, seed, pat down, then cover lightly with more potting soil. Water well with a gentle stream of water so you don’t wash the seed away. I use a rain head on my watering can.