Aphids on rose of sharon

1477 Views 9 Replies 8 Participants Last post by GCoco, 15 d ago

nikmasteed

Discussion Starter · May 17, 2021

I've never had aphids on any of my shrubs before but I think that's whats on my rose of sharon (sorry for the poor pic). One website says if you simply spray normal water with a hose every few days for 2 weeks it will knock them off and they won't find their way back? Would certainly be preferable to another chem.

See less See more

Save

1 - 10 of 10 Posts

Jconnelly6b

· #2 · May 18, 2021

In my opinion, I would try in this order:

-Beneficial insects (ladybugs can eat 50 aphids a day. You can order them from Amazon)
-Anything with Spinosad - Naturalyte is my preferred, it's cheap and works great. Use at 2 oz/gal and spray in the evening, apps 2 weeks apart until problem is gone.
-Neem oil - will also control fungal issues, but it's messy and sticky to get out of your spray equipment

Save

7824

· #3 · May 18, 2021

https://www.spectracide.com/products/insect-killers/outdoor-insect-killers/spectracide-malathion-insect-spray-concentrate.aspx

Save

440mag

· #4 · May 19, 2021

+1 on ^^^previous replies^^^ and I'll add:

Obtain some active ingredient Imidacloprid and follow the directions for application rates in drenching the roots. The active ingredient is systemic; the plant will absorb the a.i. into its circulatory system and any insects biting into the plant are drt. (Never occurred to me I've never seen any aphids on any shrubs in our yard and that makes sense as we root drench all our shrubs every Spring against Japanese beetles ....)

https://www.domyown.com/bio-advanced-12-month-tree-shrub-insect-control-landscape-formula-p-3335.html

https://www.amazon.com/imidacloprid-insecticide/s?k=imidacloprid+insecticide

Save

Reactions: 1

nikmasteed

Discussion Starter · #5 · May 22, 2021

440mag said:
+1 on ^^^previous replies^^^ and I'll add:

Obtain some active ingredient Imidacloprid and follow the directions for application rates in drenching the roots. The active ingredient is systemic; the plant will absorb the a.i. into its circulatory system and any insects biting into the plant are drt. (Never occurred to me I've never seen any aphids on any shrubs in our yard and that makes sense as we root drench all our shrubs every Spring against Japanese beetles ....)

https://www.domyown.com/bio-advanced-12-month-tree-shrub-insect-control-landscape-formula-p-3335.html

https://www.amazon.com/imidacloprid-insecticide/s?k=imidacloprid+insecticide

Yes I'm starting to become a big believer in these systemic root drench products. I used bayer 3-in-1 rose/shrub care (has imidacloprid as the insecticide component, probably less of it then the product you linked to) on all my roses/azaleas/rhodos this year and a noticeable improvement in insect/fungal damage. HOWEVER I did not use it on the rose of sharon until after I made this post the other day. 2 days later the aphids are still there but I don't expect it to work right away (or at all?) as a curative.

I've also used Bonide version of Tree/shrub (also imidacloprid) on my specimen trees primarily to combat Spotted Lanternfly-- consider yourself lucky if you live outside of PA/Mid-Atlantic and don't know what the hell those are.

Save

Reactions: 1

dawn.nappi

· #6 · 19 d ago

nikmasteed said:
Yes I'm starting to become a big believer in these systemic root drench products. I used bayer 3-in-1 rose/shrub care (has imidacloprid as the insecticide component, probably less of it then the product you linked to) on all my roses/azaleas/rhodos this year and a noticeable improvement in insect/fungal damage. HOWEVER I did not use it on the rose of sharon until after I made this post the other day. 2 days later the aphids are still there but I don't expect it to work right away (or at all?) as a curative.

I've also used Bonide version of Tree/shrub (also imidacloprid) on my specimen trees primarily to combat Spotted Lanternfly-- consider yourself lucky if you live outside of PA/Mid-Atlantic and don't know what the hell those are.

Def know what lament floors are😵‍💫

Save

GCoco

· #7 · 19 d ago

A little bit of dawn mixed in water. Rinse the plant off after a few hours. Hit the plant again in a week to kill of the newly hatched aphides.

Save

Delmarva Keith

· #8 · 19 d ago

I’d add a foliar spray of Imidicloparid. Just shy of 0.5 ml / gallon of 21.4% Imidicloparid won’t hurt the plant but it will take it up into the leaves while the drench is working its way.

Save

Jeffersonzoysia

· #9 · 19 d ago

Liquid sevin works wonders, just spray it on and it will take care of aphids and Japanese beetles when they come later this year.

Save

GCoco

· #10 · 15 d ago (Edited)

Long term is to use a systemic soil drench which is taken up by the plant. Imidacloprid is your friend. Common name brand is Dominion 2L which is 21% imidacloprid. Mix 0.2 fl oz (1 teaspoon) per foot of plant height in 1 to 2 quarts of water. Water plant with this. Water plant (no imidacloprid) over the next few days so the plant will ”drink” the imidacloprid. Will take a few weeks before before the plant is aphid free. Repeat every 3 months.

Save

1 - 10 of 10 Posts

Top Contributors this Month