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Saucer Magnolia

Posted: Sat Jul 16, 2016 4:23 pm
by Porter
My mature 15 year old saucer magnolia leaves are turning yellow and falling off. Help. Is there anything I can do to save this tree?

Re: Saucer Magnolia

Posted: Thu Jul 28, 2016 4:19 pm
by lorijones
Are all the leaves turning yellow and falling off or just some of the leaves? This may be a physiological response to environmental conditions. These trees are not drought tolerant and it has been very hot and dry this July. Drought conditions can cause trees to drop their leaves in order to conserve water. Overwatering can also cause the yellowing and subsequent dropping of leaves. Check the soil moisture level around the drip line of your tree. If it is dry 6"-8" down, then water your tree well. If it is soggy, then cut back on your watering.
Check for scale insects on the leaves and branches. These piercing/sucking insects can cause yellowing of the leaves. If you notice little bumps on the branches (they could have a white waxy covering), these are scale insects. Here is some information on controlling these pests: