Why are my lemons yellowing and falling off prematurely?

Tropical_grow516June 27, 2011

I live in zone 6b in New York. This year I bought two Improved Meyer Lemons from Monrovia, and have them in containers. They have been outside since the middle of April in a very sunny south-facing spot and watered every few days when dry. I�ve fertilized them about every two weeks with some fertilizer I had that�s intended for tomatoes (forget the exact kind), and dried blood fertilizer to boost the nitrogen content. They came with fruit on them already that has not grown at all or fallen off since purchasing. They�ve been flowering nicely, and I�ve been cross-pollinating the two plants. However, once the new fruit gets to about the size of my pinky fingernail, it will turn yellow and eventually fall off, every time. I�ve also noticed that a few of the branches are dieing, though the new vegetative growth the plants have experienced has significantly outweighed any dieing branches. So, my question is, how do I get my fruit to stop dieing, so I can get some lemons?

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Citrus always sets way more fruit than it actually holds. It is normal for most of the fruit to fall off like you decribe. How large are the trees? If they are too small they may not hold any fruit at all. Not sure on the dieing branches issue there are tons of possible causes. What type of potting mix are they in? Meyer lemons are actually kind of tough to keep happy in pots.

    Bookmark   June 27, 2011 at 1:33PM
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They are in a mix of mostly citrus/cactus storebought media, some perlite, and a little bit of standard potting soil (ran out of the other two components). Both plants are 20" x 20" or so.

    Bookmark   June 27, 2011 at 2:18PM
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to clarify, they were only repotted into slightly bigger pots after purchase, so mostly, they're in whatever media Monrovia grew them in.

    Bookmark   June 27, 2011 at 2:42PM
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As I said, the trees came from the store with half-formed green lemons on it already. I cut all the fruit off of one of the trees, and left maybe 2/3 of the fruit (maybe 10 lemons), on the other one. Both seem very healthy, but the tree that had all original fruit cut off seems to be growing new leaves faster. However, it would be nice if the half-formed fruit on the other tree could finish maturing and I could see some lemons. So, a question I have is, should I keep the fruit that originally came on the tree (I bought it maybe 3 months ago and the fruit has remained, but has not gotten bigger) on the one tree and see what happens, or should I get rid of it?

    Bookmark   July 19, 2011 at 9:35AM
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