Most heat tolerant dino kale variety

Does anybody know which dino kale variety (standard lacinato kale, black magic, mamba, etc) is best suited for high temperatures? The 2 most common selections seem to be the standard lacinato and black magic but I cant find any information as to which is more heat tolerant. Most of the seed stores/sites does not explicitly state which is more heat tolerant and customer service does not seem to know for sure either when asked/emailed. So perhaps if anybody has tried growing them side by side or know any good resources/studies about this, they can share their experience/knowledge

Hi Jiemsi, welcome to the forum.
I grow kale in Brazil (zone 9b) and find that most of it doesn't tolerate heat that well. I've grown a few varieties including lacinato and find they just don't get that big (leaf size isn't as big as in more temperate climates) before they poop out. The same applies to kale in general. I tried seeds from Italy called cavallo nero (maybe, it was a long time ago) thinking they would be better in the heat and no luck.
I do a lot better with collard greens, which get large and tolerate the heat better.

I see, perhaps i will try collard greens then. I have either the champion or morris heading variety, do you have any recommendation for which is more heat-tolerant?

Tereza Okava wrote:Hi Jiemsi, welcome to the forum.
I grow kale in Brazil (zone 9b) and find that most of it doesn't tolerate heat that well. I've grown a few varieties including lacinato and find they just don't get that big (leaf size isn't as big as in more temperate climates) before they poop out. The same applies to kale in general. I tried seeds from Italy called cavallo nero (maybe, it was a long time ago) thinking they would be better in the heat and no luck.
I do a lot better with collard greens, which get large and tolerate the heat better.

quick internet search tells me they are both supposed to be bolt-resistant, but i've never seen heading collards (or those varieties) so can't tell you for sure.