Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Thursday - July 03, 2014
From: galveston, TX
Region: Select Region
Topic: Non-Natives, Problem Plants, Herbs/Forbs
Title: Verbena bonariensis won't bloom in Galveston, TX.
Answered by: Jimmy Mills
QUESTION:
My Verbena bonariensis is thriving, but never blooms. The plants look healthy, are about 6 feet tall and in full sun. The buds turn light purple but never open to flower. My neighbor's vb are blooming like crazy. I grew these from seed; is there a type that doesn't bloom or do they need something I'm not giving them?ANSWER:
Mr. Smarty Plants isn’t going to be of much help on this one. You see, the mission of the Lady Bird Johnson Wildflower Center is to increase the sustainable use and conservation of native wildflowers, plants and landscapes. Verbena bonariensis is an introduced plant from South America, that has made it into The Invasive Plant Atlas of the United States. So no flowers = no seeds which makes the plant less invasive.
However, there are plants whose flowering is inhibited by an imbalance in the the nutrients that are available in the soil, particularly the ratio of nitrogen to phosphorus (N/P). Too much nitrogen may result in poor flowering. If the plant has been getting regular lawn fertilizer which often has a high N/P ratio, this could account for the lack of flowering. Lets look at fertilizer a bit more closely.
The most common elements that are found in fertilizers are nitrogen (N), phosphorus (P), and potassium (K), and fertilizers containing these three elements are termed complete fertilizers. Fertilizers differ in the relative amount of these elements that they contain, and this information is found on the label of the fertilizer container (bag, bottle, etc.) It is represented by three numbers eg 1-1-1, or 5-10-5, or 3-1-2, which are the percentages of the elements; N, P, and K in that order.
This link to Central Texas Gardening has some good tips about proper use of fertilizers .
More Problem Plants Questions
Problems with Mexican feathergrass
October 24, 2015 - I live in Austin. I've recently seen negative comments re: Mexican feathergrass. Is it native to this area? Is it becoming a problem? I have had it in my yard for years and never considered it a ...
view the full question and answer
Bulletproof plants from Burleson TX
April 18, 2013 - I recently wrote you a question concerning planting a privacy plant consisting of wax leaf ligustrum on my country property. Your answer was immediate (thank you-I am impressed). I like the wax leaf ...
view the full question and answer
Do white-tailed deer consume King Ranch bluestem?
October 25, 2013 - Will white-tail deer in central Texas consume King Ranch bluestem ?
view the full question and answer
Repairing the split trunk of a TX mountain laurel
February 28, 2015 - I have a fairly large mountain laurel that I just realized has a split down the trunk. Is there anything I can do to save it?
view the full question and answer
Clearing out non-native Himalayan blackberry
January 25, 2009 - Can you recommend a way to clear an area of Himalayan blackberry? We have cut the canes back but wish to eliminate them completely so that we can replant that area with native plants attractive to wil...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |