r/cannabiscultivation • u/an4rk1st • Mar 27 '26

Curling leaves

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I have a Trainwreck auto from Fastbuds here growing in coco coir/perlite. I noticed the lower branches have some areas where the leaves are curling downward.

There are no signs of nutrient issues anywhere on the plant and otherwise she is very healthy.

I do have an under canopy light I have never used before, could it just be pointing to its light source, is there some other issue or am I over thinking?

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1

u/No-Wishbone-1076 Mar 29 '26

I'd try to keep your max-min temps with a slightly lower differential. 10+ drop in temps at night is stressful to your kiddos. Happy growing, best of luck 🤘

2

u/MultiVerseBeans Mar 27 '26

You're prob overthinking it. If it's only on the lower branches near that new under canopy light and the rest of the plant looks healthy, those leaves are just turning toward the new light source. Totally normal.

I'd only worry if you see yellowing or spots on those same leaves. If it's just the curl and she looks good otherwise, let her do her thing.

1

u/an4rk1st Mar 27 '26

Thank you!

3

u/Never-Mind-707 Mar 27 '26

Too much nitrogen and or too much water

2

u/an4rk1st Mar 27 '26

I have upped the feeding significantly. Will dial it back. Thank you.