sick plant need advice

[WildFire.ca]

the leaves curling up at the edges.

[stinkyattic]

I looked closely to see what you are looking at and the only thing I saw is simply normal from that angle viewing the serrations- Heat stress would be a lot more visible.

Curl at the edges only is associated with heat from a lamp too close, while general heat stress will also manifest as leaves 'canoeing' under, and I would expect those def symptoms to be much more pronounced.

[WildFire.ca]

I looked closely to see what you are looking at and the only thing I saw is simply normal from that angle viewing the serrations- Heat stress would be a lot more visible.

Curl at the edges only is associated with heat from a lamp too close, while general heat stress will also manifest as leaves 'canoeing' under, and I would expect those def symptoms to be much more pronounced.

Thats good to know, my understanding is/was that the tips curling are the first stages of heat stress and the canoeing is a more advanced stage.

[stinkyattic]

It's more like the difference between chronic (upside down canoe, plus a general sadness to the plant, if that makes sense- you'd know if you saw it- duller colors, increased symptoms of def, floppiness, BAD herms) and acute (edge curl up, often acompanied by pale or even white marks where the lights were way too intense, often the rest of the plant is the picture of health).

[WildFire.ca]

I talked to a buddy of mine and he says that the leaf curl like that is caused by mag deficiency. How close are the lights to the plants? I just want to figure this out as I get this problem some times.

[the image reaper]

here ya go: International Cannagraphic Magazine Forums - The Complete guide to Sick Plants,pH, and Pest troubles!
that's an excellent guide ... :thumbsup:

[WildFire.ca]

...

[rottenfork]

hey there stinky im 7 weeks into flower think i better get flushing eh?

wildfire ive a 400w HPS and its about 800mm from the top of the plant temps are 27-29c

[WildFire.ca]

wildfire ive a 400w HPS and its about 800mm from the top of the plant temps are 27-29c[/QUOTE]

Well heat isn't the reason for the leaf curl. I sprayed mine with cal/mag yesterday we will see what that does.


At week 7 you only got one week left to fix problems. Looks like it will be good smoke enjoy.

[stinkyattic]

Yup, get flushing.
Your temps aren't outrageous. I run up to 80'F without any symptoms, and have been forced to go into the low 90s and saw no damage, just a slowing of growth.