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Grow QuestionsWhat’s causing leaves to curl up and fold?

What’s causing leaves to curl up and fold?

918Growstarted grow question 4 years ago

Ethos Pluto Cut Auto are showing upward curling on leave claw tips? Seeded in AutoPots 6.6 gal. With Roots Organics 707 top with 6” core of 707, Then 50/50 mix with Sohum living soil to straight Sohum in bottom half. Temps 77 high and 68 low. With oscillating fan.

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Leaves. Curl up

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Justa_Retardanswered grow question 4 years ago

Try raising your lamp.. It's usually heat stress when leaves curl like that. - Your thermometer is to the side of the lamp, so it doesn't catch how hot it actually is beneath it, but rather that temp of the air around.. There can be a big difference between heat below the lamp, and general heat in the tent. - I got 2 thermometers going in my tent. One placed on top of the soil, directly below the lamp, and one place to the side. They say two very different temps.

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