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 - April 24, 2009

From: Dubuque, IA
Region: Midwest
Topic: Non-Natives, Herbs/Forbs
Title: Are dusty millers perennial in Dubuque, IA?
Answered by: Barbara Medford

QUESTION:

I have dusty millers in my front yard. Last fall I did nothing with them as I wasn't sure if they will return or not. Do the dusty millers continue to grow year after year and should I cut them down or how exactly do you take care of them as far as if they come back year after year?

ANSWER:

This Floridata website Senecia cineraria says "At least 8 different garden plants are commonly called 'dusty miller'." Senecia cineraria is native to the western and central Meditteranean area and therefore not in our range of expertise. The Floridata site goes on to list the other 7 that go by the same common name. If, indeed, your plant is the Senecia cineraria, it is grown as a summer annual in cool areas, and is hardy in Zones 8 to 10. Dubuque, in central eastern Iowa,  appears on the USDA Zone Hardiness Map to be in Zones 4a to 5, with average annual minimum temperatures from -30 to -15 deg. F.  We think you will need to expect to replant them every year.

 

More Herbs/Forbs Questions

Plants for a property near a conservation area in MD
July 18, 2011 - Can you tell me what native plants and the type of landscaping that would be good to plant in front of a forest conservation area that is on a steep hill behind our future house? It is located in Manc...
view the full question and answer

Houston plants adaptable to Birmingham, AL
June 14, 2007 - I have recently moved from Houston to Birmingham Al. I had a wildflower garden in my back yard. Would the same flowers work here as well? I would love to have the same beautiful colors here.
view the full question and answer

Is Phyla lanceolata (frogfruit) poisonous to dogs fromTitusville FL?
June 01, 2014 - Is Phyla lanceolata, also called Fogfruit, Lanceleaf Fogfruit, or Northern Fogfruit, toxic to dogs? We have it growing amongst our grass. I can't find it on any toxic plant list.
view the full question and answer

Hearty, bushy native plants for windowboxes in Abilene, TX
October 08, 2005 - I live in Abilene, Tx and am a horrible gardener. I would love to have window boxes with some sort of hearty bushy plant. Any suggestions, I'm at a total loss...? Thanks!
view the full question and answer

Habiturf lawn in Carson City, NV
October 15, 2013 - I planted habiturf just south of Reno NV May 5. First two months no or little germination because nite temps too cold. Now doing ok except battling purslane and redstem filaree.. SO, I notice bare/spa...
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