Blog « Minnesota Rose Society

Japanese Beetles

July 7th, 2017 in Blog, News

Japanese Beetles have arrived in the Twin Cities. For quick knock down use Spinosad or Carbaryl. For longer term effect try deltamethrin or bifenthrin.

To kill grubs apply a good grub killer to your lawn between July 15th and Aug 1st. For best results dethatch lawn first then water grub killer in after application.

Upcoming Arboretum Activities

April 19th, 2017 in Blog, Upcoming Events

Arboretum Activities

It’s time for the 2017 work dates at the Wilson Rose Garden at the Minnesota Landscape Arboretum!

Raising Roses: April 15th
Planting: April 22 & 29 if needed
Pruning: May 6
Mulching: June 3
Rose tying: October 14
Rose tipping: October 21

Japanese Beetles

July 1st, 2016 in Blog, News

Interesting Article from University of Minnesota Extension Service

http://blog-yard-garden-news.extension.umn.edu/2010/04/japanese-beetles-in-minnesota-education.html

Japanese Beetles

June 30th, 2016 in Blog, News

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.

2016 Retail Rose Lists – Local Twin Cities Nurseries

May 3rd, 2016 in Blog, Sources or Availability

2016 Abrahamson Nursery 2016 Rose List

Dundee Nursery 2016 Rose List

2016 Rose Order Minnesota Gardens

Sam Kedem Gardens Rose list

2016 Rose List Tonkadale Nursery

American Rose Society Roses In Review (RIR)

September 11th, 2015 in Blog, Events, News

Time to contribute to The American Rose Society Roses in Review. See the PDF’s for details.

2015RIR

2015 Article to societies RIR

Final Nitrogen Fertilizer

August 2nd, 2015 in Blog, Events, Tips and Techniques

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?

July 18th, 2015 in Blog, Events, Tips and Techniques

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!