Light stress question

If leaf edges curl up from light intensity, do they un- curl, once light intensity is decreased?

Hollatchaboy said:

If leaf edges curl up from light intensity, do they un- curl, once light intensity is decreased?

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Yea they usually do, when they recover unless they are burned.
Some plants get that tacoing in general tho.

But leaf edges curl can also be nutrient deficit (too much), I noticed it this year outdoors: two plants in same pot (Paradise seeds: Space Cookies had a problem while LA Amnesia did not), while light intensity was same for both.

sebs999 said:

But leaf edges curl can also be nutrient deficit (too much), I noticed it this year outdoors: two plants in same pot (Paradise seeds: Space Cookies had a problem while LA Amnesia did not), while light intensity was same for both.

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Excess phosphorous will cause tacoeing/canoeing . It's pretty common with all the PK Bloom boosters when Cannabis only need low to moderate dosage of phosphorous in flower for optimal growth.

It all depends on the reason they curl up, if it's from lights stress and low humidity it might be reversible but it's pretty hard to tell what the actual cause is without being at the location.

Cheers!