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

Thursday - March 05, 2009

From: Marble Falls, TX
Region: Southwest
Topic: Compost and Mulch, Poisonous Plants, Trees
Title: Can hackberry twigs and leaves be safely used in compost?
Answered by: Barbara Medford

QUESTION:

If Hackberry trees and leaves have growth inhibiting compounds, should they not be used in compost piles?

ANSWER:

The point of emitting those growth-inhibiting compounds is to protect the area around the tree from competition. When the leaves have fallen or branches have been trimmed, they are dead, and no longer have the power to emit the substances, nor the reason to do so. There are some plants that have toxic parts, or the whole plant is toxic to some degree, such as Sophora secundiflora (Texas mountain-laurel) and Taxus canadensis (Canada yew). Even dead and dried up, such plants should not go into compost, nor should Toxicodendron radicans (eastern poison ivy) because the residual oils are not destroyed by the composting process.  Many other plants, including oaks, black walnuts, and pecans have this same self-protective ability and, from personal experience, make very fine compost. This article, Compost Notes by Ken Roberts, will give you some more insight on what should and should not go into your compost pile.

 

More Trees Questions

Plant ID from The Woodlands TX
July 22, 2013 - Your plant database does not distinguish 2 native tree species. Common names for these 2 trees: American hophornbeam and ironwood or musclewood. These common names are used for both trees - even m...
view the full question and answer

Juniper as host of cedar-apple rust
July 17, 2007 - Thanks for the helpful advice on the Eastern Red Cedar. I was wondering if you could ease my mind about a potential problem. I have read up on some of the native plants in my area in a very good book ...
view the full question and answer

Trees blooming white in East Tennessee in April
April 07, 2010 - What kind of tree is blooming now, 4\6\10 in the mountains of east TN. They have white blooms?
view the full question and answer

Problems with Texas Ash from Sun City, AZ
April 20, 2012 - What might be causing the leaves on my Texas Ash tree to have brown spots and curl up and die?
view the full question and answer

Replacing Drought-Stricken Cedars
January 16, 2012 - Hello, I live in Williamson County on a couple acres. We have several dead cedars as a result of drought; we're reluctant to cut them down because many of them provide a friendly barrier between us...
view the full question and answer

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