En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Growing grasses under juniper trees (Juniperus ashei)

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 - October 29, 2008

From: Austin, TX
Region: Southwest
Topic: Grasses or Grass-like
Title: Growing grasses under juniper trees (Juniperus ashei)
Answered by: Nan Hampton

QUESTION:

Mr. Smarty Plants, Yesterday, I attended the plant sale at the Wildflower Center. I purchased cupgrass and switchgrass seeds only to discover the grasses may need more water than I am willing to use in the place I originally wanted to plant both. My yard is heavy caliche. I do water my volunteer trees: cedar, escarpment live oak, redbud and some hardwood I have yet to identify. I also intend to plant the Heritage cedar elm I purchased near those trees. Will the grasses grow near or under the trees, especially those blasted cedar trees? (I think a cedar tree killed both one of my and my neighbor's wax myrtles which were planted about 8' from the trunk but not in the shade of the canopy.)

ANSWER:

Juniperus ashei (Ashe's juniper) does have allelopathic effects on some plants (e.g., Schizachyrium scoparium (little bluestem) according to Gwen Young and Janis Bush, but competition for water, light and nutrients also play a significant role in reducing the growth of plants beneath juniper trees.

Both Eriochloa sericea (Texas cupgrass) and Panicum virgatum (switchgrass) prefer growing in the sun so neither is going to grow well under your juniper or, for that matter, under any tree.  According to our information, both grasses require a medium amount of water. You no doubt bought your seeds from Native American Seed at our fall plant sale, so you might like to visit their website to read their planting tips, etc.

 

More Grasses or Grass-like Questions

Ground cover for Brooklyn, NY
January 25, 2013 - Hi Mr Smarty Plants, I'm looking for a fast growing ground cover for my Brooklyn, NY back yard. The area is nestled between 3 buildings and a fairly large tree, so most of the day its shady, but ...
view the full question and answer

Plants/grasses for a bioswale in Maryland
February 08, 2010 - Mr. Smarty Plants, I'm looking for a good seed mixture, wetland plant/grass mix, to use in Bio-Swales in central Maryland. Can you help me?
view the full question and answer

Problems with non-native St. Augustine lawn from Austin
October 06, 2013 - We have St. Augustine in our front lawn. There are some patches where the grass has entirely died but mixed in with the dead areas are little clumps of living grass. It seems to be spreading througho...
view the full question and answer

Planting turf grass in PA
October 23, 2010 - Is it too late to plant new grass in mid October in Pittsburg? Should I wait until Spring at this point?
view the full question and answer

Restoring the woods in Central Austin.
May 08, 2012 - I live in Austin, south central between Red Bud trail close to the low water bridge and Bee Caves road. My question: I want to make the wooded sections of my yard attractive. They have filtered sun...
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
© 2014 Lady Bird Johnson Wildflower Center