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Ottawa, Ohio

Does too much fertilizer cause the leaves to curl? Looks like the center of the leaf grew too fast and the outside edges stayed to small like a string was tied around the outer edge.

5/5/2012 12:22:07 AM

East Jordan, MI

I've had that on the first couple of true leaves, not sure what caused it for sure, I suspect sunburn because it usually happens to mine soon after setting out the plant ater a sunny day, but maybe too much fert on a tender seedling. On mine if you stretched the edge a little it would tear the burnt part and the leaf would un-pucker and look more normal. It didn't seem to cause any problem for the plants.

Maybe someone else will enlighten us further.

5/5/2012 7:08:11 AM

Ely Mn

i had that this year.i was thinking it was the miracle grow potting mix i used,but im not sure.what kind of seed starting mix did you use?

5/5/2012 8:07:46 AM

Weedville,pa

I've seen the same thing on both of my plants this year. Others that have followed seem to be fine though.

5/5/2012 8:09:53 AM

Ottawa, Ohio

It seemed to happen after I added some water with a little soluble fert. They were still under the lights in the basement so it shouldn't be sun burn. 400 watt HID but it was 6 feet away. Probably too far to hurt.

5/5/2012 7:14:54 PM

Port Alberni, BC, Canada

JAB, this happens to all of us at some time. Take a pair of sharp scissors and make some very small cuts along the edge of the leaf. You will in a sense be cutting the "string" and thus freeing up the edge to expand. Tiny cuts, just enough to sever the "string."

5/6/2012 2:29:08 AM

Oak Grove, Mn

paraphrased repeat for the ignores:
If you think that bacteria or fungi might be the cause, you would spread the disease by cutting the "string". Be cautious of ubiquitious gummy vine which is easily spread with every cut.

5/6/2012 7:39:14 AM

Joliet, IL

Cutting makes good sense. I have used my fingers to tear a few points in the outer edge to free up the cupping and allow more of the damaged leaves surface maximizing the healthy areas still left. The first 3 true leaves are just to get the plant going. the second one or kickstand one gets chopped usually here anyways in lay down of main process. Its those 4th leaves and on that I really try not to get singed. Many times the first three take it the worst cuz they are growing so fast and hot hoops and small root systems and rapid cell division equal a few toasted leaves here and there in the early stage.

5/6/2012 3:11:12 PM