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

Wednesday - April 08, 2009

From: Port Monmouth, NJ
Region: Northeast
Topic: Non-Natives, Pests
Title: Japanese beetles in Port Monmouth, NJ
Answered by: Barbara Medford

QUESTION:

I have searched your web-site in the hopes of not repeating or bothering you with a question not in your field. I am hoping you can help me. I live in Port Monmouth, New Jersey. Last year many of my flowering plants and trees, roses, plum trees, impatiens, etc were consumed by Japanese beetles. I did the whole soapy water deterrent, beetles bags, and self plucking but still dealt with them all summer. I have heard through some research that these beetles have "scouts" that come out somewhat early to find a good location and also worry their larvae is in my soil. Is there anything you could tell me to deter them or ward them off if and when they do arrive?? I am desperate to help the garden I love and have worked so hard for. Thank you in advance.

ANSWER:

Actually, that's not in our field, as we are gardeners, not entomologists. And, many of the plants you list are non-native to North America and/or to your area. The Lady Bird Johnson Wildflower Center is dedicated to the care, preservation and propagation of plants native to North America and to the area in which they are being grown.

However, we do sympathize with your problem with the Japanese beetle. About all we can do (since you seem to have tried most of the solutions we might offer), is try to find you a source that hopefully will  have better information than we do. In connection with localized gardening and especially pests and diseases, we always recommend you start with your nearest university extension program. In this case, the Rutgers University New Jersey Agricultural Experiment Station, when we searched on that subject, brought up websites both in Ocean County and in Monmouth County. Both sites have websites with contact information and lawn and garden sections, even access to Master Gardeners. We think it's safe to say that if you have Japanese beetles, so do a lot of the people living in your area. 

In fact, we found a University of Kentucky Entomology site Japanese Beetles in the Urban Landscape that said "The Japanese beetle is probably the most devastating pest of urban landscape plants in the Eastern United States." That also helps to explain why we don't know anything about them; we do have pests in Texas, but at least not that. Anyway, we learned that both the larvae (grubs) in the soil over-wintering and the beetles that emerge when the weather begins to warm are threats to your plants. Please read the entire article, as it has a lot of information on the beetle life cycle and controls. We at the Lady Bird Johnson Wildflower Center recommend neither for nor against the use of pesticides, and urge you to seek trained professional advice if you feel you must go the pesticide route to protect your garden. 

 

More Non-Natives Questions

Native plant to replace invasive non-native nandina in Houston
February 28, 2010 - I'm just now finding out that Nandinas are an invasive species from our local chapter of the Native Plant Society of Texas. I have three of them in my front yard and want to replace them. Can you sug...
view the full question and answer

Non-native mimosa as deer food in Colerain, NC
June 20, 2009 - I was wondering if deer eat any part of the mimosa tree? I have three good sized trees in my yard with seedlings popping up everywhere. Would it be profitable to transplant for deer habitat?
view the full question and answer

Problems with non-native cuphea in Pearland TX
November 09, 2009 - I have about 8 Bat Face Cupheas and I am having trouble with them. First, instead of mounding 360 degrees, the branches all grow forward (they do bloom well). They're in full sun, about 3 feet out fr...
view the full question and answer

Yellowing leaves on non-native weeping birch in Brick NJ
August 16, 2009 - I have a young weeping birch-planted in spring-we water regularly, it gets good sun-and rain has been perfect--the leaves get yellow--and now they are a lot! Whats the matter? I love my little tree.I ...
view the full question and answer

Pruning practices from Austin
May 16, 2013 - I need to do some pruning in my front beds and I know nothing about plants. From what I have been able to identify I have bicolor irises, plumbago, Japanese Aralia. I don't even know where to begin o...
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