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
2 ratings

Monday - August 08, 2011

From: Austin, TX
Region: Southwest
Topic: Watering, Trees
Title: Defining drip line on trees from Austin
Answered by: Barbara Medford

QUESTION:

When you say that trees should be watered at the "drip line," do you mean that literally? I assume that the drip line means at the outside edge of the leaves or branches. Does that mean that watering closer to the trunk won't help the tree, even if the grass or plants underneath do benefit?

ANSWER:

Sorry, we get so used to using certain catch words, we forget that not everyone speaks the same language. Watering anywhere around a tree during the kind of weather we are having is beneficial. When a tree is small and new, we recommend sticking the hose in the soil around the base and letting it drip slowly until water comes to the surface, at least twice a week. With a mature tree, not only would it be difficult to get that hose in there with all the roots, but there are roots extending far beyond that which need the moisture, too. Using the phrase "drip line" is just a quickie indicator, and not totally accurate. Remember that the roots of a large tree will often extend out a distance at least comparable to the height of the tree, which is usually much farther out than where the edge of the shade from the tree, or drip line, is established. Yes, run the sprinkler under the tree and not under the tree but still over the roots. The only caution we would make is to avoid getting the bark of the tree too wet, as this can invite fungi and diseases.

 

More Trees Questions

Trees suited for rocky, caliche soil of Central Texas
September 20, 2011 - I need to replace aging ashes. I have planted 2 Monterey oaks, but I would like to know what else I could plant whose roots will grow well in NW Austin caliche, rocky soil? Thank you.
view the full question and answer

Decorative Trees for Scenic Bench in Fairhope IL
June 10, 2012 - I am looking for a recommendation for a pair of small trees (does not grow taller than 18-20 feet) that can provide shade on either side of a stone bench. The site is in full sun, western exposure an...
view the full question and answer

Need tree suggestions for a long, narrow strip in Folsom, CA.
January 18, 2012 - I live in Folsom, Ca. I have a long strip (50') of planting area about 2.5' wide at the top of a retaining wall to the fence behind it. I would like to plant alternating (2) trees down this strip to...
view the full question and answer

Tall trees for privacy screen in St. Augustine FL
March 24, 2013 - Please let me know what kind of evergreen tall trees I can plant for privacy in my back yard in the st. Augustine, Florida area. Thanks for your assistance.
view the full question and answer

Bulging trunks on post oak
August 05, 2011 - I have a huge post oak with a codominant trunk that is bulging between the two main trunks. The bulging is causing the trunks to spread apart, so one of the trunks is getting much too close to the ho...
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