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
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Monday - June 22, 2009
From: Colorado Springs, CO
Region: Rocky Mountain
Topic: Non-Natives
Title: Non-native. Why are my potted Royal Empress trees dying?
Answered by: Joe Marcus
QUESTION:
I have purchased several Royal Empress trees over the past two years. Why won't they grow? Some sprouted leaves and then died while in the pots I planted them in. While others, that are 2 years old won't grow more than a foot the whole year. Help?!*ANSWER:
We know this is going to seem like a strange answer, but count yourself blessed. Royal Empress tree, Paulownia tomentosa has far more bad habits than it has endearing attributes. Above all, we think you should remove your Royal Empress trees and plant something less likely to cause you problems in the future. Several previous questions and answers to Ask Mr. Smarty Plants deal with the consequences of growing this invasive species:
Invasive, non-native Paulownia
Information about Invasive Paulownia Tree
Dead-appearing Royal Paulownia trees in Manteno, IL
Fast growing, possibly invasive trees for South Carolina
If, after reading of the horrors of owning one of these trees you still want one, you might contact your county's Cooperative Extension Service agent for advice. Growing trees in pots is tricky, especially in Colorado where the roots are very prone to freezing. Perhaps that is the issue with your trees.
More Non-Natives Questions
How to Deal With Goutweed?
June 12, 2015 - Hi, I'm wondering what plants (groundcover) would best compete against goutweed. It's coming up all around some existing potentilla shrubs and some nice bulbs and prairie perennials. I would hate to...
view the full question and answer
Trimming spineless yucca in Chicago
April 05, 2011 - I have a spineless yucca (indoors) which is 11 feet tall and thirty-five years old. When the yucca recently started to scrape the ceiling, I moved it away (roughly 20 feet) from the windows to an area...
view the full question and answer
Problems with non-native Banana Shrub from Houston
May 01, 2014 - My 7' beloved Banana Shrub (magnolia) has white dots on top of the leaves and nasty black stuff covering the backside of the leaves. The plant is dropping leaves. What can I do to save it?
I has bee...
view the full question and answer
Liquid glucose as substitute for sunlight from New York City
December 16, 2012 - I am curious to find out whether liquid glucose can be poured as water for mung bean plants as substitute for no sunlight. Is the possible? Will a specific amount of glucose need to be used? Can liqui...
view the full question and answer
Problems with non-native althea in White Oak TX
June 10, 2011 - I have an althea bush that is 2 years old. I have never had a problem with it before but this year only half of it has leaved out and is blooming. The other half has some very small leaves and very sm...
view the full question and answer
| Support the Wildflower Center by Donating Online or Becoming a Member today. |