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

Tuesday - April 29, 2014

From: Mission, TX
Region: Southwest
Topic: Non-Natives, Butterfly Gardens, Herbs/Forbs
Title: Growth rate of non-native Asclepias curassavica
Answered by: Barbara Medford

QUESTION:

As a volunteer at the National Butterfly center, I wonder how long from starting the seeds until the plant reaches approximately 20 cm tall does it take a tropical milkweed (asclepias curassavica) to grow assuming 60 degree nights or above? Thank you

ANSWER:

There are a couple of things we need to let you know. The first is that this member of the Mr. Smarty Plants Team does not speak metric, and must blushingly concede that she has not the slightest idea how tall is 20 cm?

The second thing is that 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 in which they are to be grown; in your case, Hidalgo County, in the very southern tip of Texas. Ascepias curassavica,Tropical Milkweed, is therefore not in our Native Plant Database but is native to South America, and there is some controversy about using it in feeder areas for the Monarch Butterfly, according to this article from the Texas Butterfly Ranch.

 

More Non-Natives Questions

Slow growing, non-native Viburnum sandanqua in Deland FL
April 05, 2010 - Hi. I live in central FL, and planted sandankwa viburnum as a hedge 3 years ago. I was told they would grow quickly, but they are growing very slowly, although they look healthy with deep green leaves...
view the full question and answer

Difference between invasive Chinese and Japanese wisterias and native wisteria
September 12, 2014 - Dear Mr or Ms Smarty Plants, Is there any way I can tell for sure if my wisteria is native? I bought it at a place when it was in bloom that sold a lot of native plants. I Would like to know for sure...
view the full question and answer

Care of desert willows
September 10, 2007 - We have three desert willows. Two are doing well, but the third, which was planted at the same time as the others, is about 1/3 the size of the other two, the foliage is thin, and the leaves have dry...
view the full question and answer

Mercer Society of Harris County Plant Sale from The Woodlands, TX
March 15, 2011 - Love the Name! Anyway, the Mercer Society of Harris County will be having its annual plant sale late this month and as usual I will be attending. I'm trying to find some tropicals and sub-tropicals...
view the full question and answer

Survival of non-native rosemary on sea breeze from Alberta Canada
July 28, 2011 - I read that Rosemary, in some locations, can live on nothing other than the humidity carried by the sea breeze. Is this true?
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