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Hyacinth Plant

Q.Tomato plant leaves slightly curling

Zone 9b | mberg07 added on June 10, 2016 | Answered

I have transplanted several celebrity and Big Beef tomato plants in my raised garden beds. It’s been about 2 weeks and they seem to be doing well. I’ve been suckering them in order to help establish strong root systems. I’ve noticed over the last 3 nights that the leaves have been curling upward just slightly but only at night once the temperatures drop. I live in California near the bay. Our temperatures have been ideal, sunny skies with temps ranging from 78-90 degrees while at night the temps have dropped down to 58-64 degrees due to the coastal fog and sea breeze that acts as our natural air conditioner here. I’ve noticed that the leaves on all my plants, both varieties, slightly curl upward but then slightly open back up as soon as the fog burns off and the sun starts warming things up come morning. Is this doing any short or long term damage to them? I’ve monitored the soil temps and it stays relatively warm, even with the drop in temps at night, the soil stays at 68-73 even at the coolest point of the night. I’ve just read over and over that leaves curling are a sign of stress or abnormalities. Thank you.

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Answered on June 11, 2016

Plant leaves can curl and cup when temperature changes, this is normal.
If the leaves curl and stay, or this spreads, you may be dealing with pests or disease.
I would continue to monitor the plants and treat with Neem Oil if you feel pests may be present in the garden.


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