Host an Event Volunteer Join Tickets

Support the plant database you love!

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
1 rating

Wednesday - March 15, 2006

From: Austin, TX
Region: Midwest
Topic: Non-Natives
Title: Possibly escaped non-native Buddleja davidii in Missouri
Answered by: Nan Hampton and Joe Marcus

QUESTION:

About 3 years ago my wife and I were traveling thru southeastern Missouri and stopped at a road side rest station on Interstate 44. While we were there we noticed a shrub about 4 to 5 feet tall with pale blue flowers. This plant was covered with butterflies. We counted 12 to 15 different types. There were other flowering plants in the same bed and in other beds nearby but all of the butterflies were on this one plant. This was in late August/early September. Is there anyway to find out what this plant was? Any suggestions will be greatly appreciated.

ANSWER:

It is possible that the shrub you saw was butterfly bush (Buddleja davidii—often spelled: Buddleia). It is not native to North America, but is commonly planted in gardens and may be an escapee. It comes in a variety of colors, blooms in late summer, and is definitely a butterfly magnet. Another possibility for a cultivated plant that fits your description is French hybrid ceanothus (Ceanothus x delilianus). It is a hybrid of C. coeruleus (synonym=C. caeruleus) from Mexico and C. americanus that is native to Missouri. The hybrid is a hardy plant with pale blue flowers.

Here are some other possibilities that are Missouri natives and somewhat fit your description:

Blue sage (Salvia azurea var. grandiflora)
Narrow-leaved mountain mint (Pycnanthemum tenuifolium)
Mountain mint (Pycnanthemum pilosum)

If none of these look like the shrub you saw, you might check the plants with blue flowers on Missouriplants.com.
 

More Non-Natives Questions

Looking for an apple tree to plant in Austin, TX.
December 08, 2010 - I want to plant an apple tree in my yard that bears fruit and will provide habitat and shade. Are any varieties that will do well in the South Austin area? And do I have to plant two trees to get fru...
view the full question and answer

Seeds for invasive, non-native Erodium cicutarium
February 05, 2008 - I rec'd the following e-mail from a friend in he Chicago area. I looked for about an hour and couldn't find a place to get weed seeds. She thinks we are in the desert here and apparently are so rura...
view the full question and answer

Spots on non-native naval orange trees from Stockton CA
October 20, 2012 - I have two mature Navel Orange trees. One tree has developed spotty chlorophyl depleted areas that were not on the oranges when they were smaller. In addition, the oranges on both trees are smaller ,...
view the full question and answer

Green Pearls or String-of-Pearls plant
August 13, 2015 - Years ago I had a plant I called green pearls because that's what it looked like. It was an inside plant. Can you please help me with this? Thank you
view the full question and answer

Questions about hollyhocks and yucca
May 25, 2016 - I have 2 questions. In Western N.Y. State the hollyhocks grow like weeds but add color with their large stalks. I've sent for seeds and the best I can do in N.W.Travis county is 9 inch plants that die...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.