En Español

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 - July 19, 2012

From: Georgetown, TX
Region: Southwest
Topic: Watering, Trees
Title: Watering Native Trees in Georgetown, TX
Answered by: Brigid & Larry Larson

QUESTION:

I installed a native/adapted plantscape in early March including several small trees. They were planted in the rocky soil west of I-35 in Georgetown with plenty of added compost and mulch. Other than an initial root stimulator dose at planting, they have not been fertilized. All three possum haw and one of two anacacho orchids have many leaves that are browning at the tips. I know the heat and drought are factors adding to their stress. They get watered with bubblers three days a week, 15 minutes in the morning and 15 minutes in the evening each day. I'm concerned that I'm either over- or under-watering. How can I tell which.. or is there something else possibly going on?

ANSWER:

  Mr Smarty Plants initial vote went for over-watering, you should really cut that down,  but on consideration - transplant stress is another strong possibility since the Possumhaw seems to be reacting worse than the Anacacho Orchid!  How can you tell if it's watered correctly?  Test the soil near the tree.  After watering it should be damp to a depth of 4-5 inches.  Check out the Forest Service video referenced below.  For information on the best growing conditions look at the plants record in the plant database.

Bauhinia lunarioides (Anacacho orchid tree) is found fully naturally in West Texas towards the Rio Grande Valley - It is acclimatized to quite dry conditions and the plant record [under Growing Conditions] indicates it does best in dry soil with low water conditions.

Ilex decidua (Possumhaw) is much more tolerant of water.   It is native to Central to East Texas and the Plant Record indicates it likes moist soil and medium watering. It is a bit inconsistent with my call of overwatering that all of the possumhaw are affected and only one of two Anacacho Orchids is; this is a little more indicative of transplant shock.

Still 3X/week at 30 minutes per watering day is quite a bit of water. The Wildflower Center also has a page - Drought Resource Center - Watering information is there including The City of Austin Earthwise Guide to Tree Care during Drought and a Forest Service Video on Tree Watering Tips. Note especially on the video, the use of a screwdriver to test the soil to see if it's watered enough.  A reasonable guideline for watering trees would be to set the bubblers to water once every 2 weeks for 2 hours instead of 15 minutes 2x a day. Once the trees are established, in about 2 years time, stop watering unless there is extreme drought.

 Is something else going on - maybe.  When I checked the other Mr Smarty Plants answers, they look fairly even that leaf browning may be watering [over OR under] and/or transplant shock.
- Anachacho Orchid leaves turning brown and curling in Driftwood.
- Leaves turning brown and dropping in Austin
- Possumhaw loosing leaves in Liberty Hill after transplant
- Brown Leave on Possumhaw in Grandview TX

 

From the Image Gallery


Anacacho orchid tree
Bauhinia lunarioides

Anacacho orchid tree
Bauhinia lunarioides

Anacacho orchid tree
Bauhinia lunarioides

Possumhaw
Ilex decidua

Possumhaw
Ilex decidua

Possumhaw
Ilex decidua

More Watering Questions

Mites in soil of house plants
June 25, 2008 - Hi there! I recently noticed tiny silver mites in the soil of my plants that I only notice after watering. These plants are indoors in on a window ledge (a dwarf palm, aloe plant and Hawaiian Scheffle...
view the full question and answer

Shriveling agave from Miami Florida
August 23, 2013 - Dear Mr. Smarty Plants, Most upset - My beautiful agave (wish I could have submitted an image) has stared to misbehave. The once first liquid filled leaves, are starting to look more like the skin ...
view the full question and answer

Plant for graveside in New Jersey
August 07, 2010 - I am looking for a plant to put on a graveside in southern New Jersey. The problem is that the area is very hot & dry and the plant would only receive rain. I am interested in a perennial. Thanks
view the full question and answer

Decline ot Heartleaf rosemallow from Austin
March 26, 2012 - My tulipan del monte -a new small plant from the wildflower center--did great all winter and was forming a new flower bud, just died in a matter of a few days. It looks like it "dried up", no visib...
view the full question and answer

Greywater effect on plants from Dallas
June 09, 2013 - How does gray water affect plants?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center