En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - July 31, 2010

From: Lehi, UT
Region: Rocky Mountain
Topic: Non-Natives, Trees
Title: Japanese lilac trees in Lehi UT
Answered by: Barbara Medford

QUESTION:

Dear Mr. Smarty Pants, We live in Utah and this past spring planted three Japanese Lilac Trees in the lawn next to the deck hoping they would one day provide some shade. They are planted in full sun and in sandy, rocky soil. Their leaves have been brown with crumpled edges for most of the summer. Of late a couple of new shoots have come out the top of the trees with a few blossoms. These trees are obviously not healthy. Help?

ANSWER:

The best we can figure out, what you have is the  Syringa reticulata, which this  USDA Plant Profile shows growing in Wyoming, New York State and other northeastern states, but not Utah. Since it is native to (guess what?) Japan, it falls out of our expertise, which is plants native not only to North America but to the areas in which they are being grown. We found numerous websites on this plant, to some of which we will give you links. The closest we can come to speculating on the cause of the leaves browning is that it is likely too arid in Utah for it, and also your soil is probably alkaline. This particular variety is supposedly tolerant of poor soils and alkalinity, but perhaps not that tolerant. Most of all, it needs very good drainage, to prevent water from rain or irrigation from standing on its roots. 

University of Connecticut Horticulture

Backyard Gardener

cirrusimage.com

Nebraska Forest Service

 

More Non-Natives Questions

Is Sucissa pratensis (Devil's bit scabious) allelopathic?
July 04, 2013 - Lady Bird Johnson Wildflower Center pointed me to you. Can you comment on Devil's Bit Scabious? A neighbor pointed out these volunteer plants in my yard and wants me to kill them. He called them Devi...
view the full question and answer

Karoo rose
June 15, 2007 - Where would the Adenium obesum/desert rose/Karoo rose pictured in the Austin American-Statesman's Gardening section on 06/09/07 be available for purchase in or near the Taylor, Texas (76574) area?
view the full question and answer

Non-native Ruellia brittonia in Raleigh NC
August 23, 2009 - I have discovered Mexican Petunias this year. I LOVE THEM! Beautiful plant. However, they are so tall and after a rain are leaning badly. Should I tie them back? Will they get stronger as they ma...
view the full question and answer

Eliminating KR? Bluestem from St. Augustine Yard in Spicewood, TX
April 28, 2012 - How can I eradicate bluestem grass invading my St. Augustine lawn?
view the full question and answer

Planting petunias around base of oak tree from Houma LA
March 30, 2013 - I live in south Louisiana and I want to plant petunias. Can I plant petunias around the base of an oak tree?
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center