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
1 rating

Monday - September 22, 2008

From: Paw Paw, IL
Region: Midwest
Topic: Invasive Plants
Title: Information about invasive Paulownia tree
Answered by: Nan Hampton

QUESTION:

What genus and species and family is this Royal Paulownia tree I hear about? Is it Elm? Linden? Dogwood? Is it a weed? thank you

ANSWER:

Paulownia tomentosa (royal princess tree), a native of China, is a member of the Family Scrophulariaceae (Figwort Family).  There are no trees native to North America that are in this family—elm is in the Family Ulmaceae, linden is in the Family Tiliaceae, and dogwood is in the Family Cornaceae.  A few familiar North American plants in the Family Scrophulariaceae are:  the paintbrushes (Genus Castilleja), the monkey-flowers (Genus Mimulus) and the louseworts (Genus Pedicularis).

Mr. Smarty Plants certainly considers it a weed!  Please note what Texas Invasives says about it: 

"Princess tree is an agressive ornamental tree that grows rapidly in disturbed natural areas including forests, streambanks, and steep rocky slopes."  

It is also is listed in the Invasive Plant Atlas of New England, in the Plant Conservation Alliance's Alien Working Group Least Wanted list and the Federal and State Noxious Weeds list.

If you are considering planting a royal paulownia tree, we urge you to consider these native alternatives:

Amelanchier arborea (common serviceberry)

Cercis canadensis (eastern redbud)

Cornus florida (flowering dogwood)

Ilex opaca (American holly)

Morus rubra (red mulberry)

Lindera benzoin (northern spicebush)

Sassafras albidum (sassafras)


Amelanchier arborea

Cercis canadensis

Cornus florida

Ilex opaca

Morus rubra

Lindera benzoin

Sassafras albidum

 

 

 

More Invasive Plants Questions

Covering dead arborvitae with non-native ivy from Niles MI
April 14, 2013 - I have a severely thinning arborvitae hedge. It is probably too shady, but I want the privacy. I'm thinking of planting something like ivy to fill the gaps. I know it will probably kill the hedge, bu...
view the full question and answer

How to get rid of Japanese knotweed (Polygonum cuspidatum)
July 28, 2008 - We have an enormous stand of japanese polygonum that we are trying to get rid of. What soil type is the most inhospitable to this aggressive and highly invasive species? Were thinking of planting so...
view the full question and answer

Are non-seeding Bermudgrass hybrids invasive?
July 15, 2010 - Since Cynodon dactylon (Bermudagrass) is listed as an invasive species (texasinvasives.org), do you feel the non-seed producing Bermudagrass hybrids would also be considered invasive? Assuming a hybri...
view the full question and answer

Getting rid of non-native, invasive English Ivy from Davidsonville MD
March 19, 2014 - Just moved and need to rid the well established Ivy planted on the steep slope area around the back and side of the house as it is taking over the bushes on the top and trees in forested area at botto...
view the full question and answer

Getting rid of Japanese bindweed in Massachusetts
February 04, 2009 - How do you get rid of Japanese Bindweed (mile-a-minute)?
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center