Rent Shop Volunteer Join

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Tuesday - April 27, 2010

From: Roswell, GA
Region: Southeast
Topic: Diseases and Disorders
Title: Yellowing of Leyland Cypress in Roswell, GA
Answered by: Barbara Medford

QUESTION:

We paid for 12 foot naylor blue leyland's to be planted behind our home. This is their first season in the ground here - they came from a tree farm - there is yellowing on some of the branches and we're concerned about their health. Mostly we are not educated enough about these particular trees. How much of this could be due to the packaging/transfer/planting..etc?

ANSWER:

The "scientific" name of this plant is xCupressocyparis leylandii 'Naylor's Blue.'  Here is some information about the plant from the University of Florida Extension. 

This is a non-native  genus hybrid (that's why the "x" before the name) between Chamaecyparis and Cupressus. While some of the forbears of both genera are native to North America, hybridization puts them out of the range of our expertise at the Lady Bird Johnson Wildflower Center. We are committed to the use, protection and propagation of plants native to North America as well as to the area where they are being grown. 

We can tell you that this plant is hardy from USDA Hardiness Zones 6 to 10a; Fulton County in northwest Georgia, is Zone 7a to 7b, so the trees should be fine there in terms of climate. Some of the references to disease of this plant that we found were canker and they are often bothered by bagworms. If this tree is being widely grown there, others have likely had the same sort of problems. You might contact the University of Georgia Cooperative Extension Office for Fulton County to see if they have any experience with problems in this tree. 

Pictures from Google. 

 

 

More Diseases and Disorders Questions

Orange patches circling cedar branches
May 15, 2010 - We have dry rusty orange patches that circle several of our Cedar branches. There are a few orange blobs on different limbs, but they do not look like the pictures of Cedar Rust (no horns). The foli...
view the full question and answer

Stressed Ashe juniper is dropping needles
May 07, 2015 - We have a large Ashe juniper tree in our backyard, at least 20 ft tall. This past winter/spring, several limbs have died and it's dropped a ton of leaves (clumps of "needles" really). Is it slowly ...
view the full question and answer

Information about giant yellow and black wasps
September 13, 2008 - Regarding a previous question submitted by a person asking about the giant yellow and black wasps..It's a Cicada Killer.I used to see them all the time when I was a kid in Victoria, Tx..But I haven'...
view the full question and answer

Why doesn't Diervilla lonicera bloom in Wisconsin?
June 11, 2015 - I have had a Diervilla lonicera in southeastern Wisconsin for at least 5 years. It has never bloomed. Why? It appears healthy.
view the full question and answer

Leafing out problems with oaks in Towson MD
June 02, 2012 - 3 native 5-year-old oaks kept old leaves until March and are not leafing by the end of May. The few leaves that have emerged are shriveled. WHAT'S WRONG?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.