chlorosis bald cypress

Asked September 6, 2017, 9:02 AM EDT

We have 2 bald cypresses which developed chlorosis. The arborist treated the large one and it's still yellow and brown but alive. The arborist gave no hope for the small cypress and it died. Is there any real hope for the large one? At $300 for professional treatment.....do you think it can be saved and is it worth the cost of treatment. Thank you for your response.

Bexar County Texas trees and shrubs

3 Responses

Hello

Cypress and most other types of conifers are a challenge to grow in this area.

If the tree is truly chlorotic, it might not be a suited selection for our alkaline soils.

Often these symptoms are brought about by over irrigation or poor soil drainage as well?

Images would help?

Often if this yellowing symptom persists in the spring growth flush, then its best to jerk the plant out.

David Rodriguez -Extension Horticulturist
Texas A&M AgriLife Extension Service
Bexar County/San Antonio


Mr. Rodriguez: got your response...you suggested photos of the bald cypress...here they are. As I stated in my initial question, the cypress was examined by an arborist and the tree was treated. Tree still alive but not looking well. At $300 a treatment, not sure if this tree is worth more investment or should be taken down. Thanks for your response.

Hello

This is not an iron chlorosis issue?

This fall like color is caused by either poor soil drainage with the tree being planted to deep and over watered or the tree was let to dry down to much. Symptoms look the same.Remember, that these are river bottom trees that need a good amount of moisture and excellent soil drainage. Only deep water the trees entire root system once a month in lieu of a significant rain event from September through March.

So, make sure that the tree is not planted to deep with its flare roots being exposed off the main trunk. Make sure that there has no weeds, grass or any plant competition at least 10 feet away from the main trunk. Keep the cleared out area mulched and replenished twice a year with a two inch layer of a double shredded hardwood mulch with compost. Carefully get on a ladder and try to strip off as many leaves as possible. If it soon buds out there is a chance of survival, otherwise we have to see what happens in the spring push out of leaves and the color of the leaves at that time.

Happy Gardening!

David Rodriguez -Extension Horticulturist
Texas A&M AgriLife Extension Service
Bexar County/San Antonio