Why the canoe effect on Fan leaf
1Right_Anglestarted grow question 5y ago
Can anybody help me ID what is happening to these Fan leaves, at the top of my Black Willie.
Leaf temp is 1c cooler than the room. Leaf 22c, room 23c, rh%55, lite distance 45cm.
The leaf is showing that its folding like a canoe. Always thought that was signs of “ “too hot”.
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420Masteranswered grow question 5y ago
Leaves too close to lights. May need to raise lights or dim wattage just a little
Coopmcanswered grow question 5y ago
Looks like light stress it’s the top fan leaves I’m dealing with same thing right now and only thing I have changes was upgrading to a powerfull LED
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1Right_Angleanswered grow question 5y ago
Frm11001, first off, those are called Trichomes on the leaves…
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Frm11001answered grow question 5y ago
At first glance, they look good!
The canoe-shaped leaves could be due to too much heat, lights being too close, or being too powerful, but heat shouldn't be your problem if you're at 23°C, and the light intensity and proximity don't seem to be an issue either. While I'm writing this, I checked your diary and saw that you did LST; I'm not an expert, but whenever I did LST, my leaves would slightly deform. As for the upper leaves, I wouldn't worry about that slight deformation; they look fine, maybe just a fan blowing too close, but nothing to stress about.
What does concern me are those white spots on the leaves; I can't identify if it's resin, dust, or mites/thrips. I hope it's the first one, but I would definitely check that before anything else.
The plant looks great after that!
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