|
| I like Euonymus for it's different colors and growing heights but sooner or later scale seems to creep in on them.
Is there a preventative program I could try to prevent this. What systemic insecticide do you think would work best and at what intervals. |
Follow-Up Postings:
|
- Posted by ken_adrian z5 (My Page) on Sun, Apr 15, 12 at 11:57
| for scale.. i go high powered.. but i dont know if it is labeled for said use... bayer tree and shrub ... it is labeled for scale.. but i dont know about Euonymus i got rid of all mine.. for this very reason .. it wasnt worth the repeated ... endless ... use of a systemic product ... ken |
|
| Beware of the problem associated with the imidacloprid pesticides (like the Bayer stuff). Population explosions of such pests as thrips and spider mites have been reported after its use, partly due to the resistance that has shown up in those and other species (like some beetles and whitefly). Horticultural oils have long been the favorite 'go-to' product for scale insects and one of the few things I'd ever use prophylacticly on a susceptible plant species. Oil applications can be very successful on Euonymus, if used according to label directions. |
|
- Posted by gardengal48 PNW zone 8 (My Page) on Sun, Apr 15, 12 at 18:41
| The easiest form of prevention is avoidance :-) If euonymus scale is prevelent in your area, then perhaps euonymus is not the best go-to plant for you. And while I hesitate to second guess anything Dorie/Rhizo has to say, I'd love to know how a hort oil can have prophylactic insecticidal properties. Doesn't the oil have to coat the insect and preferrably in its instar or crawling stages? My understanding is that hort oils have minimal residual effect (i.e., 24 hours, give or take) and do not provide a substantial feeding deterrant. So unless your timing is dead-on, the hort oil is not very efficient with scale control. |
Please Note: Only registered members are able to post messages to this forum. If you are a member, please log in. If you aren't yet a member, join now!
Return to the Shrubs Forum
Instructions
- You must be a registered member and logged in to post messages on our forums.
- Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review the contents and make changes.
- After posting your message, you may need to refresh the forum page in order to see it.
- It is illegal to post copyrighted material without the owner's consent.
- HTML codes are allowed in the message field only.
- No advertising is allowed in any of the forums.
- If you would like to practice posting or uploading photos, please visit our Test forum.
- If you need assistance, please Contact Us and we will be happy to help.