Host an Event Volunteer Join Tickets

Support the plant database you love!

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 17, 2015

From: Newtown Square, PA
Region: Northeast
Topic: Diseases and Disorders, Trees
Title: Ostrya virginiana Compatible with Juglone
Answered by: Anne Van Nest

QUESTION:

Is Ostrya virginiana sensitive to juglone?

ANSWER:

Juglone is the chemical produced by some members of the Juglandaceae family (particularly Juglans nigra, the black walnut) which is toxic to some plants. The Ontario Ministry of Agriculture, Food and Rural Affairs has a good webpage on Walnut Toxicity that has an extensive list of plants.

Ostrya virginiana, hop hornbeam is not on any of the Juglone tolerant or Juglone susceptible lists that can be found on the Internet, but there is a personal reference to seeing it thriving on a Native Habitat/Forest Management forum about black walnuts that does confirm that it is not susceptible.

 

From the Image Gallery


Eastern hop-hornbeam
Ostrya virginiana

Eastern hop-hornbeam
Ostrya virginiana

Eastern hop-hornbeam
Ostrya virginiana

Black walnut
Juglans nigra

Black walnut
Juglans nigra

Black walnut
Juglans nigra

Black walnut
Juglans nigra

More Trees Questions

Native trees for Alameda County, California
May 14, 2010 - I looking for trees native to my area to plant on my property. I am located in Livermore CA.
view the full question and answer

Does Acacia farnesiana (Huisache) have agressive roots?
November 30, 2014 - Hello, Do you know if the Huisache tree has an aggressive root system? I have a few in proximity to my septic draining field and I need to know if I should cut them down to prevent clogging of t...
view the full question and answer

Identification of tree with red feathery leaves
March 08, 2012 - What is the name of a tree with dark red leaves, feathery, slim trunk; maybe in the pepper family? Jedi?
view the full question and answer

Spots on non-native naval orange trees from Stockton CA
October 20, 2012 - I have two mature Navel Orange trees. One tree has developed spotty chlorophyl depleted areas that were not on the oranges when they were smaller. In addition, the oranges on both trees are smaller ,...
view the full question and answer

Bur oak defoliation
September 05, 2008 - I have a bur oak that was planted in 1993. In 2000, I had mortared stone edging (approx 5 inches deep) installed around the trunk from 4 to 6 feet away. In the last 3 years, the tree seems to be decli...
view the full question and answer

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