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Lemon cypress shrubs #401989

Asked May 23, 2017, 4:08 PM EDT

We notice some brown spots at the base of our lemon cypress shrubs that have been growing just fine for the past year. Otherwise they look very healthy. Can you recommend what this might be and how to treat it? Or is it just the result of our very wet year so far and will come back on its own?

Marion County Oregon

Expert Response

Thanks for your lemon cypress tree question.  A few questions:  is this a miniature cypress (often substituted for Christmas trees) or a standard sized one?  Is it planted in the soil, or in a container?  If in a container, when is it inside and when outside?  If outside, do you have it in full sun, part sun/part shade or full shade?  (I can see some sun on it on the left!).  How often have you been fertilizing and watering it, and, if it's in a container, does it have drainage?  Finally, what USDA zone are you in?  (Marion County has all the way from 5a to 8b.  You can find it through your zip code here.)

While we're working on this, you might want to trim off the brown foliage (and look for insects while you're in the area.)  If there's a chance for regrowth, it would be now.  Otherwise, you'll have an ongoing unattractive hole.

Thanks for the information!


An Ask Extension Expert Replied May 23, 2017, 7:50 PM EDT
The shrubs are about 3 feet tall, they are minis, they are planted in the ground against a fence that faces southeast so they receive sun most of the day.  We have not fertilized.  We live in Keizer 97303
Thanks
The Question Asker Replied May 23, 2017, 8:38 PM EDT
Thank you!  I'll research further and respond by tomorrow night!
An Ask Extension Expert Replied May 23, 2017, 8:46 PM EDT
My further research indicates that the problem is probably due to your plant getting too much sun. All the resources I've consulted indicates they will burn if subjected to the hot p.m. sunlight, since they were grown in greenhouse shade. They can be acclimated but it needs to be done gradually. You can't remedy the damage already done, but cutting out the brown tissue will at least help aesthetically. Keep monitoring your plant for insect infestations, as they become more prevalent with tissue damage. Good luck!
An Ask Extension Expert Replied May 24, 2017, 12:57 PM EDT
The shrubs are called dwarf lemon cypress.
Thanks for your help.
The Question Asker Replied May 24, 2017, 5:33 PM EDT
Yes! These plants taught me to read labels so I didn't end up with an up-and-down screen.
An Ask Extension Expert Replied May 24, 2017, 11:58 PM EDT

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