En EspaŅol

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
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
Not Yet Rated

Friday - July 12, 2013

From: Chambersburg, PA
Region: Mid-Atlantic
Topic: Invasive Plants, Non-Natives, Trees
Title: Non-native Royal Empress tree with only green leaves from Chambersburg PA
Answered by: Barbara Medford

QUESTION:

I have 3 Royal Empress trees in my yard that are between 2-4 yrs old and have never been any color other then big Green leaves. Do you know when they will turn Purple?

ANSWER:

Please read this article from Ecosystem Gardening Native Alternatives to Invasive Paulownia Trees.

Paulownia tomentosa (Royal Empress) is a deciduous tree in the family Paulowniaceae, native to central and western China, but invasive in the USA. The Lady Bird Johnson Wildflower Center, home of Mr. Smarty Plants, is dedicated to the growth, propagation and protection of plants native not only to North America but to the area where those plants grow naturally; in your case, the borough of Chambersburg in South Central Pennsylvania. This places that tree out of our realm of expertise but we wanted to address your question in hopes it would discourage others from planting this non-native invasive tree.

From the Missouri Botanical Garden here is an article on Paulownia tomentosa, which said "No fall color." We found purple leaves mentioned nowhere else, although the flowers are purple.

 

More Trees Questions

Ensuring survival of wax myrtle in Wilmington, NC
July 29, 2009 - I just transplanted some wax myrtle bushes. What do I need to do to insure they live?
view the full question and answer

Blooms on Desert Willow withering quickly in Rockwall TX
July 15, 2010 - Why do the blooms on my Desert Willow dry up and wither away in one or two days?
view the full question and answer

Watering Oak Trees in the Summer
July 15, 2011 - Should you water oak trees in the summer? Some people say its not good for them. But many trees seem to be withering up and dying in this heat. Especially the black jack oaks. There are also post ...
view the full question and answer

Can a pecan tree be kept from producing for a season?
July 03, 2009 - Can a pecan tree be kept from producing for a season?
view the full question and answer

Dry browning leaves on Monterrey Oak from San Antonio
August 08, 2013 - I have a Monterey Oak that was planted four years ago and was doing great until the last two weeks. It has turned brown and the ends of the branches are very dry and brittle. The root flare was cov...
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.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center