Hi everyone, I grow sunflowers every year usually the large or giant varieties however this year they didn’t last very long and I’m wondering if this is due to the heat? I’m in the south of England and the heat has been extreme however I did think that sunflowers could tolerate quite high temperatures. Mine just haven’t lasted very long at all. A couple of them had leaves that started wilting so I watered them more and they picked up a bit but then others that didn’t have any leaf wilt started to die off with the yellow petals going brown and curling up. I don’t plant them 18 inches apart as advised, but I’ve never done this and I just can’t think what’s been different this year other than the very high temperatures that’s affected them basically all mine have died about two weeks ago before reaching full height. Next year I’m going to space them out a bit more and see if that makes any difference but I just wondered if anybody else had had similar problems due to the weather?
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