Explore Plants

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
    
 

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
1 rating

Wednesday - July 01, 2009

From: Irving, TX
Region: Southwest
Topic: Compost and Mulch, Herbs/Forbs
Title: Why is oakleaf hydrangea not blooming now in Irving TX?
Answered by: Barbara Medford

QUESTION:

I live in Irving Texas and have an oakleaf hydrangea. It bloomed in the early spring and now it is not blooming. Is there anything I can do to get to bloom?

ANSWER:

Hydrangea quercifolia (oakleaf hydrangea) is native to North America, but  not to Texas. It requires shade and ordinarily blooms white, green and purple in June and July. Our Native Plant Database gives us this information about the oakleaf hydrangea:

"Conditions Comments: Susceptible to sunscald, chlorosis in alkaline soils, and winter dieback. Many weak, brittle canes are easily broken in wind and ice. Forms colonies from a shallow root system. Canes can be cut to the ground every two or three years to keep the shrub smaller, but if the canes are allowed to grow, the naturally peeling bark is attractive. Pest free. Prune immediately after flowering."

If, as you say, it bloomed in early spring, then there is something out of focus. In North Central Texas, you probably have alkaline soils, and the hydrangeas all need acidic soil.  Blooming early may have been the plant's need to survive by propagating itself, which it does by blooming and seeding. 

About all we can do is suggest some things you can try to make your plant feel more at home. First, if it is not in pretty good shade, it will not do well. Second, cut out the fertilizer, especially high-nitrogen lawn fertilizer. Nitrogen inspires heavy leafing, but not blooms. Prune it back, particularly the canes that bloomed in the spring. You didn't say how old the plant was; they usually have to mature two to three years before they begin blooming. You can't turn alkaline soil acidic, but you can try amending it by adding compost to the soil, and mulching. If you can get some pinebark mulch or even pine needles for mulch, they will add to the acidic character of the soil. We don't think you can expect another bloom this year-blooming, while necessary for plant survival, also requires a great deal of energy, and the plant is not only trying to adapt to conditions for which it is not suited, it is also recovering from blooming and trying to survive.

 

 

 

More Compost and Mulch Questions

Native water plants for bio-retention pond in North Carolina
July 22, 2009 - I am looking for North Carolina native plants that can take part shade and very wet conditions (bioretention pond environment). Any suggestions?
view the full question and answer

Pine bark on non-native St. Augustine grass in Kingwood TX
May 12, 2010 - I had two large Pine trees cut down. In the process of cutting the trees down there is a lot of pine bark from the tree on my St Augustine grass. Will this affect the growth of my grass?
view the full question and answer

Planting a tulip poplar in Virginia Beach VA
November 10, 2009 - Hi. I would like to plant a Yellow Poplar, 'Tulip Tree' in my front yard. I will not be able to plant this tree until after November 15th. The tree will receive direct sun and will be exposed to hea...
view the full question and answer

Pros and cons of Hydrocotyl bonariensis as lawn replacement
March 22, 2008 - Want to convert lawn TO dollar weed! My Garland TX yard has become so shady over the years that I have a hard time with grass. A few years ago I noticed dollar weed in the grass which seemed to cre...
view the full question and answer

Chlorosis in sycamore in Kyle TX
August 04, 2011 - I'm trying to assist an elderly neighbor of mine with a plant issue. We have designated street trees in this community, our street being a Sycamore. The previous foreman out here called it a Mexica...
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.