Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Wednesday - August 07, 2013
From: Newport, RI
Region: Northeast
Topic: Non-Natives, Diseases and Disorders, Pests, Shrubs
Title: Possible maple scale on non-native mophead hydrangeas from Newport RI
Answered by: Barbara Medford
QUESTION:
I have a mophead hydrangea that has small white cottony tufts under the leaves and on the stems. I believe this is maple scale. Is there a home remedy I can use to rid this disease?ANSWER:
There are 4 members of the Hydrangaceae family in our Native Plant Database, indicating that they are native to North America. They are: Hydrangea arborescens (Wild hydrangea), Hydrangea cinerea (Ashy hydrangea), Hydrangea quercifolia (Oakleaf hydrangea) and Hydrangea radiata (Silverleaf hydrangea). Hydrangea macrophylla, (Mophead hydrangea) is native to China and Japan and therefore out of our range of expertise. However, we know that many are grown in the United States and some Internet research turned up some information that will perhaps lead you to a solution to your problem. In response to your question, no, we do not know of any "home remedy" for your problem, and in fact, don't know for sure what your problem actually is. Because local gardeners are more apt to know about locally grown plants, we suggest you contact the University of Rhode Island Cooperative Extension Office to learn if others are experiencing the same difficulties. Then, follow these links to other university and national sites on specifics of the problem:
University of Rhode Island Master Gardeners
Alabama University Cooperative Extension System Diseases of Hydrangea.
United States National Arboretum Pests and Diseases of Hydrangea macrophylla
Washinton State University Extension Scale Insects on Ornamentals
From the Image Gallery
More Non-Natives Questions
Plant identification
August 04, 2012 - Hello Mr. Smarty Plants! I have a plant that was given to me and told it was spider plant, but I don't believe it is. The plat grows up and has leaves coming out like a spider plant but they are gree...
view the full question and answer
Japanese maple in New York
August 15, 2008 - I have a few questions: Do you know what zone Brooklyn, NY. is in? If I plant a Japanese Maple in my backyard, do you think it can tolerate almost full shade (1-2 hours of sun per day)? Also, is it...
view the full question and answer
Seeds for India from Guilderland NY
August 15, 2010 - I have Green Cross “Non Profitable” trust in TamilNadu India.
We are looking for free seeds from Government and other NGO foundations. Moto: Global Vowing awareness program and our volunteers help ...
view the full question and answer
Flower with spike of yellow flowers with hairy purple filaments
July 03, 2012 - Fuzzy purple stamens! I can't find this plant identified anywhere. Blooms abt 1" or a little more across. 5 yellow petals, 5 sepals, & 5 stamens with yellow anthers, & the filaments are covered wi...
view the full question and answer
Can bastard cabbage be eaten from Austin
May 02, 2013 - On a local cooking show they were talking about cooking local foods and mentioned bastard cabbage but never showed how to cook it or if it was in fact edible. Would be a way to help get rid of it if ...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |