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
Not Yet Rated

Tuesday - April 09, 2013

From: Durham, NC
Region: Southeast
Topic: Non-Natives, Propagation, Shrubs
Title: Plants purchased at Duke Gardens From Durham NC
Answered by: Barbara Medford

QUESTION:

I went to the plant sale at a local garden this week and bought some very small plants. I am happy to wait for plants to grow but wondered if I need to do anything special. I live in Durham NC and these plants were purchased from Duke Gardens. I bought a viburnum burkwoodii and an oak leaf hydrangea. Each is less than 5 inches in height. Can you provide any special planting needs and some idea of the growth rate of these plants. Will I have 10" plants at the end of this season?

ANSWER:

Because the Lady Bird Johnson Wildflower Center (home of Mr. Smarty Plants) is committed to the growth, propagation and protection of plants native not only to North America but to the area in which they grow naturally, we must first identify whether or not the plants you have asked about are, indeed, native.

Viburnum x burkwoodii. Although there are a number of members of the genus Viburnum native to North America, this is not one of them. From the Missouri Botanical Garden, here is a discussion of the growing and care of the shrub. Another article from Floridata says "Burkwood's viburnum is the result of a cross between V. carlesii and V. utile, both native to Asia," thus the "x" in the title Viburnum x burkwoodii. One of those two articles should help you with your questions.

Hydrangea quercifolia (Oakleaf hydrangea) is, indeed, native to North Carolina. If you follow the plant link to our webpage on this plant, you will find Propagation Instructions and Growing conditions. Our webpage gives an ultimate mature height of 6 to 12 ft. tall, but we are sorry, we have no idea how tall either plant will be by the end of the year.

Again, from the Missouri Botanical Garden, here is more information on the care and culture of the Oak Leaf Hydrangea. 

 

From the Image Gallery


Oakleaf hydrangea
Hydrangea quercifolia

More Shrubs Questions

Comments on white-flowered Mountain Laurel from Austin
December 23, 2012 - Following up on the August 23, 2012, question from Driftwood about the white-flowering mountain laurel, I have found a few more leads to explore. First, there are four more images of white-flowering m...
view the full question and answer

How to deal with suckers on Flame-leaf Sumac
May 20, 2013 - Hi! It seems you can have too much of a good thing! Our flameleaf sumac is taking over our yard. There are multiple shoots appearing in our flower beds and in the lawn. How do I get rid of the unwante...
view the full question and answer

Shrub with thorns, black fruit and citrus fragrance in Michigan
September 19, 2014 - I'm not sure that my plant is a native, but I'm hoping to find some answer. There is a small patch of roadside shrubs on my property which I've been unable to identify. They have simple opposite ...
view the full question and answer

Non-blooming Dwarf Shrub and Agave Flowers
February 18, 2013 - I have two questions. I need a symmetrical dwarf shrub for full sun in Austin area that is non-flowering. Can you recommend some? And do agaves always flower when they are about 10 years and then die?
view the full question and answer

Privacy Screen for Heavy Clay and Full Sun in Louisiana
April 19, 2013 - What would be a fast-growing plant for privacy in Louisiana? I have heavy clay and full sun.
view the full question and answer

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