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
9 ratings

Wednesday - June 01, 2011

From: Boerne, TX
Region: Southwest
Topic: Trees
Title: Will Black Walnut trees grow in Boerne TX?
Answered by: Barbara Medford

QUESTION:

Was curious if any one sells Black Walnut Trees??? They used to be around the Boerne, TX area and I wondered if we could try to grow them.

ANSWER:

This USDA Plant Profile map shows that Juglans nigra (Black walnut) grows in or near Kendall County in the Hill Country of Central Texas. If you follow the plant link to our webpage on this plant you will learn what we know about the plant, including:

"Conditions Comments: Black walnut is slow-growing especially if not in its preferred moist, fertile, sunny site. The deep tap-root makes transplanting difficult. Nuts may become a nuisance as they litter and stain. Foliage is often attacked by caterpillars, and the species is susceptible to anthracnose which defoliates trees for the season."

"Certain plants will not grow under Black Walnut trees because of the juglones that the tree puts in the soil. Walnut husks are rich in tannins and toxins. Ground husks have provided insecticides, fish poison and black dye."

You can go to our National Suppliers' Directory, type your town and state in the "Enter Search Location" box and you will get a list of native plant nurseries, seed suppliers and landscape consultants in your general area. Each has contact information, and perhaps if they do not stock the tree, they can either order it or help you find one. Please don't plant the tree until December and January. It is too hot and too dry now, plus this tree is a high user of water and likes deep, rich soils which, along with the long taproot, is going to make it difficult to survive in your area.

From our Native Plant Image Gallery:


Juglans nigra


Juglans nigra


Juglans nigra


Juglans nigra

 

 

 

More Trees Questions

Small flowering tree for cemetery in TX
November 07, 2010 - I am looking for a native large shrub or small tree to plant at a cemetery in Pflugerville, TX, preferable something with flowers. I need something that won't have a large root system that would dis...
view the full question and answer

Why are branches falling from my pecan trees?
November 02, 2010 - I have tree branches falling that appear to have been cut, not broken,off the tree. Seen most on the pecan trees but had a young red bud die with what appears a clean cut of the trunk approx. 2 feet ...
view the full question and answer

Large, fast-growing shade tree for Val Verde County, Texas
April 03, 2016 - What is an overall good shade tree, very large & fast growing, to plant in Central South Texas, Val Verde County region? I am told that virtually nothing but Live Oaks or some other type of Oak will ...
view the full question and answer

Perennial Suggestions for Under Ash Trees in Minnesota
June 12, 2013 - With our house we have inherited 2 ash trees in our front yard with a large amount landscaping underneath. I'm replacing the landscaping but there are tree roots at the surface preventing me from bei...
view the full question and answer

Removal of Ashe juniper trees
April 19, 2015 - I have 15 acres with scattered huge oak and elm trees with tens of thousands of Ashe Juniper (cedar) trees 2 to 10 in diameter growing within the drip zone of the hardwoods. How do I take out the c...
view the full question and answer

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