The Q&A Archives: Leaves are turning yellow on CAMEO JAPANESE FLOWERING QUINCE

Question: I bought a CAMEO JAPANESE FLOWERING QUINCE with Monrovia label from a nursey four weeks ago. I planted it in my backyard where it will see full sunlight. Before I planted the quince, I did notice some of the leaves were turning yellow and flowers were fading off. I thought it wasn't getting enough water. Now, most of the leaves are turning yellow and falling. I am wondering what could be the problems with this quince. I did water it regularly. Any suggestion that you can offer is appreciated. Thanks.

Answer: The leaves of your flowering quince will turn yellow and then red in the fall so any yellowing this early in the season is most likely an indication of stress. It's normal for trees and shrubs to become stressed when they are first installed in the landscape; they can also show signs of stress if over- or under-watered. There are some diseases that attack quince, but unless you also see spotting, I'd rule out diseases and concentrate on cultural/environmental conditions. Full sunshine is perfect for your quince, as is a deep watering once each week. Quince does best in well draining soils so make sure the site drains well. I'd continue to water deeply once each week and allow the roots to become firmly established. Once they do, your tree should recover and behave in a more normal way. Enjoy your new plant!

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