Japanese Beetles arrived in my garden July 1st. right in historical schedule.
For a quick kill I spray with spinosad or carbaryl (sevin). For a somewhat residual effect I apply deltamethrin or bifenthrin.
To kill the soon to be hatching grubs I will apply a good grub killer to my lawn on July 15th or shortly there after.
Interesting Article on Japanese Beetles from University of Minnesota Extension Service
http://blog-yard-garden-news.extension.umn.edu/2010/04/japanese-beetles-in-minnesota-education.html
Found first Japanese Beetle today. Right on time in comparison to past five years. Will monitor to determine if JB’s become an issue. If so will treat with bifenthrin and deltamethrin.
The Minnesota Rose Society will present its’ annual Rose Show on Saturday June 18th at Joseph’s Grill on Wabasha St in St. Paul, MN
I will be in the Minnesota Rose Society Booth at the St. Paul Home and Patio Show, Sunday Feb. 21 from 10AM – 2PM. Home and Patio Show is at St Paul River Centre. Stop by and say hello or ask a question.
Time to contribute to The American Rose Society Roses in Review (RIR).
For details how you can contribute see the PDF’s below.
Between now and August 15th is the time to apply your final nitrogen containing fertilizer to your roses. Application before the 15th gives the fertilizer time to work without encouraging new growth that will not have time to harden off before winter.
Got blackspot? Try spraying with a combination of Maneb (Manzate or Mancozeb also work) with tebuconazole (Bayer Advanced Disease Control for Roses, Flowers & Shrubs Concentrate). Not Bayer 3 in 1. Spray at 7 to 10 day intervals to avoid possible phytotoxic effects such shortening of internodes. Use only as directed!
