Denver Rose Society Home Page Image

HomeCalendarMembershipEducationResources & LinksGardensMiscellaneous & NewsContacts

Denver Rose Society Events:


Monthly Rose Information:

Saturday, March 14, 1:00 pm
Regular Meeting
Program: "Life with Jackson and Perkins"
Roger Heins, retired VP of Sales at J&P
Denver Botanic Gardens Plant Society Building
1007 York Street
Visitors and guest welcome


Saturday, March 21, 9:30 am - 12:30 pm
Annual Educational Rose Symposium
Keynote Speaker: Matthew Douglas, Owner of High Country Roses
Program: "Favorite Roses from a Professional Grower"
Full agenda
Denver Botanic Gardens Mitchell Hall
1007 York Street
Free with paid admission to the gardens

 Join the Denver Rose Society for only $15

All Denver Rose Society members receive

  • The Rose Window newsletter (Feb.-Nov.)

  • Discount on Mile-Hi Rose Feed.

  • Option to purchase the educational booklet Growing Roses in Colorado for the wholesale price.

New members receive a complimentary 4-month trial membership to the American Rose Society.

Membership levels:

  • Individual E-newsletter membership dues - $20 per calendar year

  • Individual Plus E-newsletter membership dues - $20 for first member plus $5 for each adult, household member per calendar year

  • Individual hardcopy newsletter via USPS membership dues - $25 per calendar year

  • Individual Plus hardcopy newsletter via USPS membership dues - $25 for first member plus $5 for each adult, household member per calendar year

Membership Form


Follow us on Facebook too!



Join our email list for information on upcoming events!


The book, Growing Roses in Colorado, published by the Denver Rose Society is a "must have" for those who want to grow beautiful roses successfully.  Get a glimpse inside the newly revised Growing Roses in Colorado.  Available at area garden retailers and gift shops. For wholesale inquiries please contact Betty Cahill at

Retail locations that sell the GRIC book



Consulting Rosarian Tips for February:
ebruary in the rose garden mostly means leaving the plants alone. They are still down for their winter nap; donít do anything to wake them up until it is safe, around May 1.

Check for watering needs every so often. Snow covered or frozen ground means everything is fine. If we hit a warmer, dry spell where the ground thaws, go out and dig down 3-4 inches and squeeze some soil. If it is crumbly and dry, then deep water early on a day when the temperature will be above 45 degrees for several hours, to give the moisture time to penetrate deeply.

On nice days, start cleaning up leaves and other garden debris that may harbor disease spores or insect eggs. Make sure your mulch is at winter levels, and your mounds of winter protection, on those roses that need it, are intact.

At her last meeting with us, Joan Franson mentioned that she was planning to do a winter dormant spray of her roses using GreenCure. Early on a warm day, after the bed has been cleaned up, mix up some GreenCure (always follow the directions), and thoroughly spray the
canes, the base, and the surrounding mulch on the roses that had blackspot or mildew last fall to try to kill any remaining spores or overwintering structures on the canes. Warm day temperatures will allow the spray to dry before nightfall.  You can use horticultural oil for the same purpose if you prefer.

It appears those severe freezes we had back in November did a lot of damage to Hybrid Tea, Floribunda and some David Austin canes. Usually, in early February you still see some green canes that will slowly die back toward the ground by late April.  But this year, everything above the mulch looks d-e-a-d. Because of this, in a few situations where I am certain the upper canes are thoroughly dead, I have trimmed them back by a third to one half. I have stripped the foliage off those that had disease, and will eventually get around to the rest. Iíve dug down into a couple of mulch mounds and found some green at ground level, so Iím hopeful of a May comeback, but I suspect all of us may lose a plant or two this winter. The winter-hardy roses, of course, look healthy and bored, impatiently waiting for spring to arrive.

February is also a good time to think back on what worked and didnít work in your garden and to plan what you would like to do this year.

If starting a new rose bed and you did not prepare the area in the fall, dig holes now on a warm day to avoid the rush of spring activities.  Be sure to dig a deep and wide hole and add appropriate amendments.  Return the soil to the hole and at planting time it will be a snap to excavate and place your bare root or potted rose.

Study rose literature and continue landscape planning.  If drainage is a problem, consider creating raised beds.  Roses need sun for at least a half a day and can tolerate full sun.  Morning sun with afternoon shade is preferable.  Do not plant roses near large trees or hedges. 

For rose questions, contact a Consulting Rosarian in your area.

Photo courtesy of Scott Dressel-Martin

Joan Franson, our beloved longtime member who has contributed immeasurably through her time and talents to the Denver Rose Society over the years, passed away on October 17, 2014.   We know that you share in our grief but also in celebrating her extraordinary life and accomplishments.

A blog post from Panayoti Kelaidis, Senior Curator and Director of Outreach, Denver Botanic Gardens

Read about Joan in this article, written by Susan Clotfelter, printed  in the February 15th, 2014 edition of The Denver Post.

2014 Roses in Review Results

Every year, the American Rose Society conducts a survey of roses and how they grow in garden around the nation.  The results for the Rocky Mountain District are in.  See what rose growers in Colorado, Wyoming, Idaho, Montana and Utah have to say about recent introductions.  Use this information to help you decide which roses to plant next year. 







privacy | home | calendar | membership | education | resources | gardens | varia | contact | site map

© 2013 The Denver Rose Society | Denver, Colorado

Website last updated: 02/15/2015 08:31:58 AM