Pam, I've never tried growing lettuce indoors but I have had good luck with a heat resistant variety of lettuce. It's a Ferry Morse seed called "Salad Bowl" and I picked it up at Home Depot. This is my second year growing it and I love it. I planted a crop early Spring and now have a second crop I started about 2 weeks ago and it's coming along nicely. You will have to water it frequently though.

Good luck,
Franny

Thanks Franny! I'll have to give that one a try.