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

Wednesday - December 10, 2008

From: Iowa City, IA
Region: Midwest
Topic: General Botany, Grasses or Grass-like
Title: What to do about grass dying under pin oaks in Iowa
Answered by: Jimmy Mills

QUESTION:

We have 2 pin oaks about 15 years old in our front yard. The grass has started dying out under and around them. What can we do?

ANSWER:

In general, plants need light (for photosynthesis), water (for photosynthesis and other processes), and minerals (which also help in photosynthesis). The grass growing under your pin oaks could be suffering from lack of sunshine, and it is certainly competing with the oaks for water and nutrients. The shade problem isn't easy to solve, but you can increase the amount of water and nutrients that the grass is receiving. Is the die back new, or has it been going on for some time? If it is new, you might try to determine what conditions have changed?

Another possibility could be an infestation of insects or fungus. For help with this problem, I suggest that you contact the Johnson County Extension Office of the Iowa State University Extension.

 

More Grasses or Grass-like Questions

Planting creeping phlox for a groundcover
June 13, 2014 - Dear Mr. Smarty Plants, I live in Southwestern PA (zip code 15065). I have a small slope on my property that is hard for me to mow. I would like to cover it with creeping phlox, which I saw on t...
view the full question and answer

Native xeric grasses for Colorado
June 24, 2010 - Tired of mowing - replacing western exposure full sun lawn with native xeric grass. Please explain the pros and cons of Bouteloua Gracilis (Blue Grama) and Bouteloua Dactyloides Bella (Bella Blue Gra...
view the full question and answer

Replacements for yuccas from Georgetown TX
August 07, 2013 - I have lost some softleaf and variegated yucca to a beetle grub destroying the root system - like the Agave snout beetle does. I have put an insecticidal drench on my remaining plants, but suspect wi...
view the full question and answer

Buffalograss (Bouteloua dactyloides) for horse pastures
February 04, 2008 - Can Buffalo Grass be used for browse for horse pastures?
view the full question and answer

Grass for a Miniature Garden
July 18, 2013 - Please let me know what kind of grass is nice and short and tight for a miniature garden in a wooden box. I want to grow this grass in the box and I also want to know if I need to drill holes in the b...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center