Yellow dried leaf

AviafDecember 2, 2012

I have two Mandarin plants that I grew from seeds. They've been growing pretty well over the last month of two. They are both in pots with potting soil, watered regularly with holes in the bottom to let excess water come out, and I have plant nutrient sticks in each pot which I replace every 60 days. I have two CFL light bulbs with reflectors that I use to supplement the light for them because I feel they don't get sufficient sunlight where I am. I'm been doing this for the past month, they're on a timer and provide 15 hrs of light a day. They've been doing really well, especially after I started using the lights. One of the issues that just recently appeared in the last 3 days is a dry spot on one of the leaves. There are only 5 leaves, hence the concern. It looks orange, has a crisp edge and looks like it dried out. The orange/drying is also even throughout the patch. I have attached a picture. I'm not sure what is wrong as I haven't changed anything. The other plant with the exact same conditions has no issues.

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mistascott(7A VA)

How close are the lights to the leaves? That looks a bit like leaf burn from a lamp that is too close.

Also, could be leaf burn from too many macro-nutrients. Are you using the sticks according to package directions? Just an FYI, but a slow-release granular fertilizer typically does a better job uniformly penetrating the soil than a stick which can concentrate nutrients too much in one place.

This post was edited by mistascott on Sat, Jan 12, 13 at 21:50

    Bookmark   January 12, 2013 at 9:49PM
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