En Español

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

Sunday - May 22, 2011

From: St. Charles, MO
Region: Midwest
Topic: Diseases and Disorders, Trees
Title: Yellowing foliage on a lemon cypress from St. Charles MO
Answered by: Barbara Medford

QUESTION:

I recently received a lemon cypress tree as a gift. After about a month we transplanted it outside and the foliage turned from a light green to a yellow color. Is this normal? The tree doesn't appear to be dead because I can grab the foliage and lightly pull and it doesn't come off and feels pliable. The location that its in probably gets 8-10 hours of sun a day. Is that too much?

ANSWER:

The Lemon Cypress is a cultivar called Goldcrest, or Golden Crest, of Cupressus macrocarpa (Monterey cypress). You can read more about the tree from Floridata.com. Here are some intructions for outdoor care from ShootGardening and you can find care instructions for indoor Cupressus macrocarpa at indoor-plant-care.com and from the TopiaryShop.

Be sure and read all of our webpage on this plant by following the first link above. According to that information, it only grows natively in California, on the coast. We have no idea if it will even survive in your location in Missouri. We suspect that the yellow foliage is perfectly normal, as the leaves do turn yellow, ergo, the name 'Goldcrest.' In terms of the amount of sun that is appropriate, here are the Growing Conditions from our webpage on that plant. We consider "sun" to be 6 hours or more of sun a day.

Growing Conditions

Light Requirement: Sun
Soil Description: Well-drained soil.
Conditions Comments: Tremendously susceptible to a canker that kills the tree, especially if it is planted away from cool, coastal breezes. Tolerant of salt spray. Older trees are drought-tolerant.

Pictures of Lemon Cypress from Google

 

More Trees Questions

Problems with a Cercis (Redbud)
August 25, 2014 - Half of my redbud tree is pooped out looking. On two places on the bark are areas where a few layers of bark have pulled back. In these areas there are white growths.
view the full question and answer

Caterpillars ate my Sophora in La Mesa, CA.
July 06, 2011 - Before I noticed what was happening, my newly-planted 1 foot tall Sophora secundiflora was eaten by caterpillars. It now has no foliage. Do you think it will leaf out again?
view the full question and answer

Native evergreen trees with highest value for birds
April 02, 2007 - What native evergreen trees have the highest value for bird seed/fruit (other than Juniperus virginiana)?
view the full question and answer

Dealing with live oak suckers in Central Texas
March 05, 2015 - Hi, I have a couple huge Live Oak trees in my back yard. Trunks are 4' in diameter. These Live Oaks produce a lot of root sprouts/suckers. I had always head that a tree's roots feed on water/oxyg...
view the full question and answer

Evergreen Conifer for Moist, Full Sun Site in Ohio
May 09, 2015 - We need to find an evergreen conifer, classic holiday-shaped tree that will tolerate a very moist, but not soaking wet, site in full sun.
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center