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?


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

Tuesday - September 05, 2006

From: Keystone Heights, FL
Region: Southeast
Topic: Trees
Title: Identification of Cockspur Hawthorn as Crataegus crus-galli
Answered by: Nan Hampton


What is cockspur hawthorne?


Cockspur Hawthorn (Crataegus crus-galli) is small tree in the Family Rosaceae (Rose Family) with thorny branches that grows in eastern North America. Here is more information from Texas A&M University and Ohio State University.

More Trees Questions

Flowering problems with Mexican Plum and Mimosa in Austin, TX
March 18, 2010 - Greetings, My Prunus mexicana (Mexican Plum) did not produce flowers before its leaves. Can you tell me why? I was hoping to have some fruit this year. Also, as of this morning March 13. My...
view the full question and answer

Tree to plant on rocky soil in San Antonio
March 10, 2012 - I want to plant a tree in a particular spot in the yard but after digging down 10 inches I hit solid rock. I filled the hole with water and it took hours for it to go down. It is one of the higher e...
view the full question and answer

Leaves dropping on evergreen sumac in San Antonio
January 11, 2012 - I have a large evergreen sumac in my back yard that started off as a small shrub 10 years ago. This summer the leaves turned red and now have dropped off. Is the plant dead? It sent out two smaller pl...
view the full question and answer

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

Magnolia species are allelopathic
August 02, 2014 - Have a healthy Southern Magnolia tree around 8 years old. It seems like everything I plant next to it dies.: Variegated Spirea, Stokes Aster, Hydrangeas. Is there something it secretes like the waln...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
© 2015 Lady Bird Johnson Wildflower Center