Japanese Beetles and PHI

ltiltonJuly 16, 2013

It's harvest season for my plums starting now, and of course there are JBs on the trees, plums being one of their favorite targets. And every effective insecticide seems to have a PHI of at least 7 days.

I can see that the effectiveness of my earlier spray is wearing off.

What do people do, who grow plums in JB territory?

Thank you for reporting this comment. Undo
alan haigh

I think Sevin has a PHI of about 1 day for fruits and vegies.

I just wait until after harvest because they usually don't go after older leaves so trees can wait a bit. Your situation might be different, of course.

    Bookmark   July 16, 2013 at 7:08PM
Thank you for reporting this comment. Undo
ltilton

JBs seem to have extremely varying habits. I've seen them excavating holes on the ripe plums. If they'd stick to the leaves in reasonable amounts, that'd be different. They prefer the highest leaves that I'm going to prune away soon.

Sevin, I have read, would need to reapplied every 3 days or so to be really effective.

    Bookmark   July 16, 2013 at 8:30PM
Sign Up to comment
More Discussions
Shaping and pruning some BYOC trees
In January I planted two peaches and two pears, intending...
brittanyw
Restoring old and neglected apricot trees. Help!
We moved into a new home in the middle of last summer...
monibucky
Grafting sweet cherries in cold country
I'm interested in finding some sweet cherries that...
huntertshouse
Jujube hardiness zones
According to Willisorchards.com the Li and Lang Jujube...
garprob1
Avo tree grafting
I received this tree from a neighbor. Seed grown, not...
tim45z10
Sponsored Products
Rich Brilliant Willing | Delta Floor Lamp
$710.00 | YLighting
Rounded Copper Tub Steps (16 Gauge / Hammered Exterior / Antique Copper)
Signature Hardware
Set of Four Blue Fish Placemats
$42.00 | FRONTGATE
Varick Table
| Dot & Bo
Chroma Kasumi Titanium Coated 7.75 in. Carving Knife - Gold - KTG03
$164.95 | Hayneedle
Serena & Lily Kyoto Pillow Covers
Serena & Lily
KOHLER Jetted Bathtubs Underscore 4 ft. Air Bath Tub in Biscuit K-1969-G-96
Home Depot
Rich Brilliant Willing | Delta IV Pendant
YLighting
© 2015 Houzz Inc. Houzz® The new way to design your home™