Square Foot Gardening Forum
[table bgcolor=#000000 height=275][tr][td]

Hello Guest!
Welcome to the official Square Foot Gardening Forum.
There's lots to learn here by reading as a guest. However, if you become a member (it's free, ad free and spam-free) you'll have access to our large vermiculite databases, our seed exchange spreadsheets, Mel's Mix calculator, and many more members' pictures in the Gallery. Enjoy.


[/td][/tr][/table]
Search
 
 

Display results as :
 

 


Rechercher Advanced Search

Latest topics
» Total lunar / solar eclipse
by sanderson Today at 3:34 am

» Cutting back on my SFG about 75%
by Kelejan Today at 12:35 am

» How's the Weather Where You're At?
by Kelejan Today at 12:32 am

» Is a natural breed hybrid GMO parent plants, GMO or not?
by Kelejan Today at 12:30 am

» CANADIAN REGION: What are you doing in August 2017? 2017
by Kelejan Today at 12:23 am

» Anyone growing fall peas in zone 7 TN
by BeetlesPerSqFt Yesterday at 9:40 pm

» N & C Midwest: August is here!!! 2017
by Scorpio Rising Yesterday at 9:17 pm

» Any Strange and Wonderful Visitors? Photos please!
by BeetlesPerSqFt Yesterday at 9:08 pm

» New England August 2017
by Scorpio Rising Yesterday at 9:03 pm

» What to do with fallen unripe tomatoes?
by ColleenW Yesterday at 8:14 pm

» 2017 corn pictures
by Fiz Yesterday at 7:41 pm

» Composting Particle Board?
by BeetlesPerSqFt Yesterday at 4:18 pm

» What are you eating from your garden today?
by hammock gal Yesterday at 4:13 pm

» Hello gardener's
by sanderson Yesterday at 1:58 pm

» The Best Steps for Storing Tomatillos
by donnainzone5 Yesterday at 11:36 am

» Eggplant - (Japanese) Millionaire
by countrynaturals Yesterday at 11:10 am

» What I've learned this year
by countrynaturals 8/20/2017, 9:17 pm

» Plumeria ?
by sanderson 8/20/2017, 6:07 pm

» How Many Square Feet Do You Have?
by llama momma 8/20/2017, 1:58 pm

» Baba Ghanoush
by sanderson 8/20/2017, 12:04 pm

» Beets; Don't be intimidated!
by BeetlesPerSqFt 8/20/2017, 11:05 am

» Third Year SFG in Canada
by sanderson 8/20/2017, 10:30 am

» Happy Birthday!!
by sanderson 8/20/2017, 10:09 am

» Caterpillars -Armyworm?
by BeetlesPerSqFt 8/19/2017, 8:58 pm

» Oregon City Newbie
by trolleydriver 8/19/2017, 1:04 pm

» Newbie Oldbie
by sanderson 8/19/2017, 12:53 pm

» who has chickens
by llama momma 8/18/2017, 1:40 pm

» Tips for compost tumbler
by trolleydriver 8/18/2017, 12:10 pm

» Franken-mato!!!
by hammock gal 8/18/2017, 7:48 am

» Mid-Atl - Aug 2017 - Planning/Planting Fall/Winter Garden
by BeetlesPerSqFt 8/17/2017, 11:05 pm

Google

Search SFG Forum

Aphids on elm tree near garden

View previous topic View next topic Go down

Aphids on elm tree near garden

Post  Robbomb116 on 7/3/2017, 11:57 am

Through my Google searches I believe I have aphids on an elm tree near my garden. I know I have been battling them on my kale and trying to spray them off with a water bottle. Is there some sort advice that I should be doing to the elm tree in order to keep them from going between the tree and the garden.

Picture are the strange growths on the elm tree that I think suggests aphids.

avatar
Robbomb116

Male Posts : 322
Join date : 2016-07-07
Age : 28
Location : Bismarck ND, Zone 4a

View user profile

Back to top Go down

Re: Aphids on elm tree near garden

Post  BeetlesPerSqFt on 7/3/2017, 1:31 pm

Those projections on the leaves are called galls. Bacteria, viruses, fungi, insects, and mites can all 'hijack' plants to create these combination food/house structures. But they each are caused by a fairly specific combination of one of these organisms and a small range of host plants, and each creates different, recognizable galls.

There is an aphid that causes a gall on elm, called Elm Cockscomb Gall. But your galls looks like Elm Pocket Gall, caused by a mite:
http://hnr.k-state.edu/extension/info-center/common-pest-problems/common-pest-problem-new/elm-pocket-gall.pdf

This doesn't mean your elm tree doesn't have aphids, it probably has a least a few. But there are many types of aphids. Each kind has a limited number of food plants that they prefer or require. The kinds of aphids that like kale and other brassica plants aren't likely to also enjoy elm; they are pretty distantly related plants. I don't think you need worry about the aphids going back and forth between the kale and the elm.
avatar
BeetlesPerSqFt

Female Posts : 1141
Join date : 2016-04-11
Location : Port Matilda, PA Zone 5b/6a

View user profile

Back to top Go down

Re: Aphids on elm tree near garden

Post  Robbomb116 on 7/3/2017, 4:34 pm

Thanks beetles. I believe you are correct. I also noticed some clusters that were pretty clearly wooly elm aphids, and thought the galls (new word of the day!) Was connected.

I read that the wooly aphids go back and fourth between the elm and a secondary host. Since I was fighting aphids on my kale I assumed it was a possible secondary host. I was wrong, as you guessed. A second source wooly aphids stated their secondary host is a serviceberry. Which are also in the neighborhood. So asides from the unsightlyness, the elm aphids aren't a problem.

Thanks for the new word and calming my fears!
avatar
Robbomb116

Male Posts : 322
Join date : 2016-07-07
Age : 28
Location : Bismarck ND, Zone 4a

View user profile

Back to top Go down

Re: Aphids on elm tree near garden

Post  BeetlesPerSqFt on 7/3/2017, 5:31 pm

You're welcome! The different aphids, different plants thing is a recent sub-conscious to conscious epiphany for me. I realized it had to be the case after seeing aphids on plants used for anti-aphid sprays -- like garlic. How can garlic both be a repellent and a host? Oooh, different kinds of aphids with different preferences/tolerances... sunny
avatar
BeetlesPerSqFt

Female Posts : 1141
Join date : 2016-04-11
Location : Port Matilda, PA Zone 5b/6a

View user profile

Back to top Go down

Re: Aphids on elm tree near garden

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum