Vegetables and Fruit forum: Issue germinating lettuce

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Apr 30, 2017 10:25 AM CST
Hello, I've started plants inside in the past and this year started all of my plants successfully except for lettuce. For Whateve reason I can not get it to germinate properly.

I've tried putting the seeds slightly under soul and I've tried putting them directly on top of the soil. Both flats have been under the grow light for about 12hrs a day.

On the flat that I buried them, I had pretty successful Germination of red romaine but not iceberg or butter crunch. On the flat that I put the seeds on there surface, 4 days now and only 1 or two seeds actually did anything.
Any help would be greatly appreciated.
Name: Dillard Haley
Augusta Georgia (Zone 8a)
Garden Ideas: Master Level Avid Green Pages Reviewer Celebrating Gardening: 2015
Apr 30, 2017 11:05 AM CST
Never had any problems germinating lettuce so the only thing I can think of is temperature. Since you trying to start them inside it may be too warm. I use both a cold frame and direct seeding very early while frost is still an occurrence. They germinate well with soil temps just above freezing.
Apr 30, 2017 11:12 AM CST
Hm I read they germinate best in temps of 70-85 degrees. I have them in my basement where it's about 65 degrees, but they might be getting to much heat off the lamp. Should I move them out from under the light and set them in a sunny area?
Name: Dillard Haley
Augusta Georgia (Zone 8a)
Garden Ideas: Master Level Avid Green Pages Reviewer Celebrating Gardening: 2015
Apr 30, 2017 11:24 AM CST
Name: Kristi
east Texas pineywoods (Zone 8a)
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Apr 30, 2017 12:27 PM CST
Xandrew ~ I don't know where you are located but I always start my seed outdoors in January, no heat, shallowly planting under a light dusting of soil. I seem to have excellent germination. Better than needed.

I also transplant and cold soil doesn't affect it. I grow Little Gem (a smaller romaine) and it is already winding down due to our heat.

When I lived in the north, we direct seeded in the cold ground with good germination. I believe Farmer Dill is correct. Temperature is probably the key to your problem.

Lettuce in general is not a warm season crop. Good luck! And Welcome!
Be content moving inch by inch because, by days end, the inches, will add up to feet and yards.

Fulfilling ambitious objectives is usually done one step at a time.
Name: Sandy B.
Ford River, Michigan UP (Zone 4b)
(Zone 4b-maybe 5a)
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Apr 30, 2017 7:57 PM CST
Or... it may just be the seed. I've bought seed more than once that just would not grow, despite other varieties doing fine.

I'd suggest planting the seeds and putting your flat or pot or whatever in an area with light, but not directly under the plant light, covered with plastic wrap or a humidity dome or whatever. Once the seeds sprout, then put them under the light.

Since you're starting them indoors, I'm kind of thinking you are in a zone similar to mine? If so, you could plant them outside before long and just kind of let them do their own thing. Smiling
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