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Heat Resistant Lettuce Recommendations?

 
Posts: 148
Location: South Florida
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Hello,
I live in South FLorida, Zone 10, and would like to grow some lettuce this winter. I hear romaine types (our favorite) are particularly susceptible to warm temps.My research has found Red Sail, Simpsons and Salad Bowl should be OK (this is from the University of F. (I had to change this from abbreviations due to a funny error message: The specific error message is: "u" is a silly English abbreviation; use "you" instead.

Anyone else down here or in other zone 10s with different ones they've had luck growing?

Thanks!
 
steward
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Location: USDA Zone 8a
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May I ask how hot the lettuce would need to tolerate during the winter?

Since you mentioned romaine, I would suggest trying
Parris Island lettuce as it is a reliable heirloom.

Butterhead is another lettuce I have read about here on the forum.
 
Cara Cee
Posts: 148
Location: South Florida
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Hi,
Thanks. Our temperatures from September (when I'd plan to plant after having the damp seeds sprout in the refrigerator) range from about 98 to lows (infrequent ) of 28.
 
Anne Miller
steward
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If winter doesn't get hotter than 98, probably any lettuce can tolerate those temps.

I live in Texas where the summers are always over 100 and have grown lots of varieties of lettuce.
 
pioneer
Posts: 384
Location: Florida - Zone 10A
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It's just my opinion but having tried to grow all the things that just don't like it here, it's not worth it. It's far easier to supplement leafy things with leaves that like it here, such as amaranth. The Chinese use the leaves like they would spinach and it grows like a weed here even in sand, you could try Aztec spinach, which is one of the first domesticated crops in the world and grows well in heat.

I'm starting to alter my entire gardening structure around ease, because as much trouble as other people have elsewhere with things like deer, I don't think they have as much trouble as getting a couple pounds of tomatoes and okra, plus a few random successes out of 2+ years of gardening.

Squash, watermelon, most leafy greens, cucumbers, they all get destroyed by cabbage worms or aphids instantaneously, especially during the hottest months, and especially-especially if you're in a neighborhood where they dump pesticides everywhere for green lawns. I've failed over and over so I finally decided to proceed differently. Honestly if you have success, please let me know, I'm very interested into what type of environment you would've had success in.

Just today I planted Everglades tomatoes everywhere and Seminole pumpkins which came highly recommended, I also switched to roots such as yams, malanga, cassava, Japanese purple sweet potatoes, etc... last year I had great success with kohlrabi and Chinese yard long beans.

If you are going to plant any leafy greens, I would recommend Japanese Misome and Russian kale, possibly, arugula, those are pretty tolerant and are robust plants. There are also a couple tiny Japanese turnips that you can succession plant every two weeks to have a constant source of them and I had great success with them last year, if it's cold enough they're read to eat in 25 days and you can use the turnip greens as well. Gigantic daikon radishes grew here but the leaves are too bitter.

Just follow the equator around the globe and see what's equidistant to where you live. Often it's Southern Asia, the island nations like Jamaica and Indonesia, Japan, etc... and plant that stuff. Florida is completely not like anywhere else in America, unfortunately we can't cater to our grocery store diets here.

I highly recommend only planting directly outdoors in the Florida sun. Many plants can't handle being transplanted even from being outdoors in Florida shade to the garden when temperatures reach nearly 100F.
 
pollinator
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Location: BC Interior, Zone 6-7
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At www.wildgardenseed.com they have lots of lettuce varieties. I remember seeing some that were supposed to be heat tolerant, at least one of which was developed in Australia.

My favourite lettuce from them is Jester. We had a rain storm here near the beginning of the month and I've got Jester popped up all over the garden now. With temperatures consistently well over 30C during the day, none of it looks inclined to bolt yet. I don't remember Jester being touted as heat tolerant, but it seems to be doing fine.
 
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