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

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 Diseases and Disorders Questions

Why are our Euphorbia myrsinites plants dying in Soquel, CA?
August 02, 2010 - Some of our Euphorbia myrsinites die in our garden for reasons we cannot understand. Do you have any explanation or suggest area we should be looking for?
view the full question and answer

Problems with Savannah holly from Livingston TX
October 05, 2013 - Our Savannah Holly standards, planted in spring 2012, are now 10' tall, with 2-3" caliper trunks at the base. Some are in decline or have died. We thought the ribbons holding them to the nursery's ...
view the full question and answer

Prickly pear doing poorly on Long Island NY
December 27, 2012 - First, thanks for your reply on 11-3-12, re.Can a prickly pear cutting from Harker Heights, TX find happiness in Long Island, NY. The plants were set before a southern window in the attic, temp. ra...
view the full question and answer

Bulging trunks on post oak
August 05, 2011 - I have a huge post oak with a codominant trunk that is bulging between the two main trunks. The bulging is causing the trunks to spread apart, so one of the trunks is getting much too close to the ho...
view the full question and answer

Status of Texas Olive tree in Katy, TX
March 30, 2016 - I have a Texas Olive tree and it has very few leaves. Is this normal?
view the full question and answer

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