Host an Event Volunteer Join Tickets

Support the plant database you love!

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
1 rating

Wednesday - April 15, 2009

From: Austin, TX
Region: Southwest
Topic: Compost and Mulch, Privacy Screening, Shrubs
Title: Combining native shrubs for hedge in Austin
Answered by: Barbara Medford

QUESTION:

Smarty, Please tell me what the definitions are for all the various water, soil moisture, drainage and light requirements mean. Are the definitions global? I live in Central East Austin and intended to plant my newly purchased Agaritas and Wax Myrtles together, but came home from the Wildflower Center and found they have different water and moisture requirements. So it looks like I may have to go to plan B and plant the Agarita with Yaupon Holly---will that pairing work? (I want to screen my neighbor's yard as well as provide habitat for wildlife that includes cottontails and roadrunners.) Sincerely, Confused

ANSWER:

We don't know about global definitions, but we can tell you what our definitions of some of the terms referring to various plants are:

Sun is 6 hours or more of sun daily, part shade 2 to 6 hours,  shade less than 2 hours of sun a day.

Good drainage means water does not stand on the surface of the soil for more than a few minutes. Especially in our alkaline soil, drainage is very important, and compost added to the soil will help just about any plant. The compost not only enriches the soil and improves its texture, but it helps to make trace elements necessary to the plant available in the soil. If you don't know what your drainage is, dig a hole, run water in it, and if water is still standing in it in about 30 minutes, you probably have clay soil and you definitely have poor drainage. 

Soil moisture refers to the normal condition of the soil when it hasn't been raining or watering has not  just occurred. Most of the soils in Austin would have to be considered dry. 

We recommend plants native not only to North America but to the area in which the plant is being grown, because those plants are already adapted to the climate, rainfall and soils. 

You are correct, while Mahonia trifoliolata (agarita) and Ilex vomitoria (yaupon) have low water requirements and do well in sun or part shade, as well as alkaline soil, Morella cerifera (wax myrtle) needs more moisture and does better in sandy, slightly acidic soil. The wax myrtle, while it will do okay in Central Texas, is more an East Texas kind of shrub. Trying to mix these shrubs in a hedge is going to be a little awkward as the agarita only grows to 3 to 5 ft., 8 ft. under favorable conditions. The yaupon grows from 12 to 25 ft. tall. If you're thinking of building a screen, you might have a problem with the fact that the agarita will not grow nearly as high as the yaupon. All three will serve your desire for attracting wildlife, but not necessarily a uniform hedge.  In general, a "mixed" hedge might be a little harder to care for and not as uniform looking. If you want to make a visual barrier, the yaupon is your best bet. If you want to have a physical barrier, agarita is the thing-it is thick and stickery-trespassing would be painful.

Yaupon and wax myrtle are listed as "dioecious," which means that only the females have berries and there must be a male of the same species, blooming at the same time, within 30 to 40 feet, for the berries to develop. If you had a hedge of 12 yaupons, for example, a couple of males in that hedge would assure berries on the females.


Mahonia trifoliolata

Mahonia trifoliolata

Ilex vomitoria

Ilex vomitoria

 

 

 

 

More Shrubs Questions

Plant to hang over and cover a wall
May 21, 2010 - HI! this is a stumper for me! I have a 6 foot wall bracing a hill on one side and a lawn on the other. It is currently cement and I would like to find something to cover it --evergreen would be the...
view the full question and answer

Drought resistance of non-native Abelia from Austin
March 14, 2013 - Are abelias drought resistant? I have a spot that is sunny from early morning till about 2-2:30 in the afternoon. Is this enough sun?
view the full question and answer

Texas sage near a granite outcropping from Llano TX
June 10, 2013 - I have a large granite outcropping near my house. There are pockets that have spring flowers growing in them and is just beautiful in the spring. I want to plant other native plants in and about the g...
view the full question and answer

Fast-growing tree for privacy in Berkeley, CA
July 30, 2013 - Help. I need fast growing tree for backyard privacy. Where in Berkeley is there a tree nursery to Buy Pittosporum trees? Thank you.
view the full question and answer

Native Ohio Shubs for Wildlife
July 20, 2015 - Hi, I'm looking to plant shrubs and bushes for in front of our home this week but would like to plant some that are good for wildlife including bees and birds. Do you have any suggestions for norther...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.