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

Friday - July 01, 2011

From: Austin, TX
Region: Southwest
Topic: Watering, Trees
Title: What fertlilizer for live oaks under drought conditions?
Answered by: Guy Thompson

QUESTION:

In your June 7 answer about helping live oaks survive the drought, you state that additional fertilization may help as well. What kind of fertilizer to you recommend and how should it be applied? Thanks.

ANSWER:

Tree specialists don't agree on a particular type of fertilizer, one recommending  13:13:13 (nitrogen:phosphorus:potassium), while others just say a "standard" fertilizer will suffice and still others do not mention fertilization under drought conditions.  Mr. Smarty Plants suggests an organic nitrogen (slow-release) fertilizer such as 8:2:4.  Follow the instructions on the package, but apply a fairly low amount of the fertilizer around the trees near their drip lines.  Too much fertilizer could promote new leaf formation - not good in drought times.  If the trees seem to be relatively healthy you might well delay applying the fertilizer until September, which is the normal time.

Make sure you don't use Weed-N-Feed fertilizer.  This has a herbicide that kills broad-leaf plants, including oaks!  Water the fertilizer in well after application. Hopefully there is some sort of mulch of leaves or other plant material on the soil to help retard water evaporation.

And pray for a good, slow rain.

 

More Watering Questions

Watering Houseplants with Soapy Water
August 22, 2011 - I accidentally watered my house plants with a container that had a some dishsoap in it. Will they be okay? One of the plants is a 20yr old cactus, with small roots.
view the full question and answer

Leaves dropping from a potted Mesquite
August 11, 2014 - I have a Prosopis pubescens (Screwbean Mesquite) that I purchased at a nursery in Alpine, TX just a few miles away from me. It was a in nursery style black plastic container. The mesquite is perhaps a...
view the full question and answer

Is installing irrigation with Habiturf a good idea in Round Rock Texas?
December 05, 2011 - Mr. Smarty Plants, I am in the process of planning a new lawn in my front yard. We have decided to plant the Habiturf seed mix (thank you, by the way). Originally, we planned on installing a spri...
view the full question and answer

Problems with tomatoes in tubs in Campbellton, TX
May 30, 2009 - I have my tomatoes planted in big black plastic tubs, they are starting to wilt and dry up. I have put Sevin dust on them for bugs. I haven't been over watering. Could you please tell me why they are...
view the full question and answer

Hollies not retaining leaves in Tulsa
August 10, 2008 - I have Little Red Hollies that have lost their leaves, some areas being bald. They are also not full - you can see through them. These were planted in this condition Spring of '08 and have been wat...
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