En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Black bugs on Autumn Joy sedum in Dublin OH

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 - May 27, 2011

From: Dublin, OH
Region: Mid-Atlantic
Topic: Pests
Title: Black bugs on Autumn Joy sedum in Dublin OH
Answered by: Barbara Medford

QUESTION:

How to get rid of tiny black bugs on Autumn Joy sedum?

ANSWER:

We always like to start out knowing what kind of plant we are talking about. In our Native Plant Database there are 18 species of the genus sedum but only one of them, Sedum ternatum (Wild stonecrop) is native to Ohio. This really doesn't matter, as we already knew that 'Autumn Joy' is a selection of some native sedum, or possibly a hybrid of Sedum telephium. They are all members of the Crassulaceae (Stonecrop) family, and have pretty similar growing conditions and pest problems. We had a little trouble finding any information admitting that sedums HAD problems with insects, but these two articles give us some clues.

From Washington State University Extension for Whatcom County Stonecrop - says few pests bother with sedums, although slugs will sometimes take a bite. That is not surprising in view of the fact that the sedum characteristically grows near the ground, where the slugs are grocery shopping.

eHow Home Sedum Plant Pests - concedes that there are several bugs that will damage sedum, but the two it mentions that are good possibilities are aphids (they attack everything), and fungus gnats. Because you specifically mentioned tiny black bugs, we're thinking that might win the prize. The fungus gnats actually originate in damp soil around the plant, and this article mentions a couple of ways to deal with it.

Since the fungus gnat became our likeliest suspect, we found another article All About Fungus Gnats which suggests, among other things, letting the soil dry out before you water it again.

 

 

More Pests Questions

Plants ants avoid from McAllen TX
May 22, 2010 - Which native plants do ANTS avoid (are there?)? We have a big ant problem here. Thanks!
view the full question and answer

Reaction to something in the garden from Dowling MI
May 25, 2012 - In late March I was working in my yard raking etc. The next morning I had three black spots between my knee and shin that were swelling and feverish. Two days later the areas became bigger and began...
view the full question and answer

Green cyst-like growths on Texas persimmon leaves
September 20, 2013 - We have a mature Texas persimmon. We just noticed some green cyst-like growths on the tops of some of the leaves. The undersides of those leaves have black spots where the growths are. They looks like...
view the full question and answer

Problem with Eupatorium greggii
April 27, 2008 - At the Garden's fall plant sale in 2006, I bought some Eupatorium greggii. It did very well last year. Recently, the entire plant looks like it is just wilting from the top down, as if it has some so...
view the full question and answer

Yucca with halticotoma valida bugs in Burleson TX
April 18, 2010 - I have had Yucca plants in my yard for 10 years, but this year is the first time I have seen halticotoma valda, and there are thousands of them. How do I get rid of them? are they harmful to the plan...
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