Underdeveloped Cherries and Poor Yield - Knowledgebase Question

Chicago, IL
Question by Stari65
March 15, 2000
I have a Stella cherry tree (dwarf) that is 6yrs old, and 15 ft. high. It is very healthy, but every year, the cherries grow to about pea size and then fall off. I end up with about 50 cherries. It blossoms well (I have no pollinator since Stellas are not supposed to need one). The flowers on this tree are white. Do Stella flowers have to be pink? Could this tree be something else?


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Answer from NGA
March 15, 2000

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The symptoms you describe can be caused by poor pollination. Even though your tree is self-fruitful -- that is, doesn't require a second variety for pollination -- it still needs to be pollinated by insecs, expecially honeybees. If the honeybee population is low, or if pesticide sprays have killed them off, then the flowers won't get pollinated. This leads to the underdeveloped fruit that you describe.

First of all, encourage pollinators by planting a variety of flowers, and never spray plants with insecticides when they are in bloom. Some people have good luck with bee attractants, such as "Bee-Scent" spray (which you can get from Gardens Alive, www.gardens-alive.com).

Most cherry tree flowers are white, though I don't know about Stella specifically.

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