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Family: Geraniaceae (jer-ay-nee-AY-see-ee) (Info) Genus: Geranium (jer-AY-nee-um) (Info) Cultivar: Rozanne Additional cultivar information: (PP12175) Hybridized by Waterer; Year of Registration or Introduction: 2001
Hardiness: USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F)
Sun Exposure: Full Sun Sun to Partial Shade
Danger: N/A
Bloom Color: Blue-Violet
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Herbaceous
Other details: Average Water Needs; Water regularly; do not overwater
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Patented
Propagation Methods: By dividing the rootball
Seed Collecting: N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
On Sep 6, 2008, BlackDogKurt from Seymour, CT wrote:
I decided to try some Rozanne this year after reading so many good things about this 2008 Perennial of the Year. I have to say that I have been very impressed. All of my plants started blooming within weeks of being planted (unusual for most perennial flowers) and have bloomed non-stop all summer into fall. Doesn't need any deadheading either. Seems to spread rapidly but is not at all thuggish - grows and creeps low to the ground around other plants. The best part is the beutiful shade of lavender blooms. Very stunning!
On Jul 14, 2008, lottadata from Turners Falls, MA wrote:
I planted two of these a year ago from tiny seedlings bought at a nursery. They are each 5 feet wide this year. They have a nice color and long blooms, but they have completely taken over the beds they were planted in.
On May 7, 2008, jackiescompost from Mission Viejo, CA (Zone 10a) wrote:
I have grown this geranium for a year with success in southern California. It is a hybrid of two older geraniums - G. himalayense and G. wallichianum, both of which are rated for USDA zones 4-10 and up to 24 in Sunset zones.
The filing date for the patent is 1999 PP12175 It was originally spotted in 1990 by Donald & Rozanne Waterer in their personal retirement garden in Somerset. They nurtured the find, then offered it to Adrian Bloom of Blooms of Bressingham in 1992 for commercial development. It was released to the public for the 2000/2001 gardening seasons.
I've had two of these plants for about 6 years now. They are faithful returns in the spring and do bloom beautifully. Mine are getting really too big for the space they are in and I'm wondering how to go about splitting them? Do I just dig them up in the spring and chop the root ball in half or what?
On Jun 29, 2007, ladychroe from Bridgewater, NJ wrote:
It does get larger than its tag states, but since it has this great weaving habit, I placed it in a spot where its neighbors (hosta, lupine) were accidentally planted too far apart. Rozanne fills in the gaps between the plants perfectly. It's not dense, but not untidy or rangy either. It just creeps along the ground wherever there is room, blooming its fool head off.
If you wanted a mound, you could probably plant a few together and let each build the others up.
The flower color changes depending on the weather. Sometimes, when it's cool, it's as blue as any other "blue" flower. When the weather gets warmer, it's more purple. It adds another point of interest to an already beautiful plant.
Mine is growing in a mostly shady area, in slightly amended NJ clay.
On Mar 19, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:
Medium 20" - Plant 24" apart. zone 5-8. Extremely long blooming - even through the heat of August. Mounded, slightly marbled foliage turns attractively red in fall. Very heat tolerant. Flowers are deeper blue. Will spread to fill in with moist organic soil.
On Sep 2, 2006, MaggieKaye from Rochester, MN wrote:
This is the second summer for mine, and it has been unbelievable! Last fall it was still blooming strong when I was putting my Halloween pumpkins out on the porch, I was actually ready for it to stop! This year it has bloomed non-stop. The only thing is, it gets A LOT bigger than the stated size, mine right now about 36 inches across, plant it in a spot where it will have lots of room!
On Jan 30, 2006, rcn48 from Lexington, VA (Zone 6a) wrote:
Blooms of Bressingham selection. Vigorous grower with deep green foliage which performs well even in the heat of southern summers and blooms right through until frost.
On Sep 1, 2005, Sally_Denver from Denver, CO (Zone 5b) wrote:
Yes, what a grower! Mine (2) get just a few hours of Denver sun, but interweave with other plants and drape gently over some groundcovers without smothering. Perhaps they are lankier than usual, but they bloom like crazy. Lovely with orange columbine, Aquilegia desertorum, in my ornage and purple section. Also really nice covering over a bulb bed, and the fall-bloooming Crocus speciosus or colchicums will look great popping through!
On Jul 26, 2005, chantboy from Hartford, NY wrote:
I agree with the others' comments and would only add that it's a good thing it's so beautiful and long-blooming, because it spreads like crazy! It has pretty much monopolized a wildflower garden I created in my front yard. And "yes", it makes a delightful combination with coreopsis.
On Jul 17, 2005, jamie68 from Vancouver, WA (Zone 8b) wrote:
This is one of the best Geraniums to come along in years!!! Very crisp, clean apple green foliage which has amazing fall color. The flowers are an almost unreal blue, and are so very plentiful. Long bloom period, and nice overall habit makes this a definite must have!!!
On Sep 25, 2004, evanpowens from Princeton Junction, NJ (Zone 6b) wrote:
I planted geranium 'rozanne' from White Flower Farm this spring. It has bloomed well all summer and is still going strong in late September. I put it around groups of Coreopsis 'creme brulee' for a fantastic purple and yellow combination. Highly recommended.
11/21/04: still blooming but leaves have turned fantastic colors . I'll be ordering more for next season to go in my rose beds.
On Aug 4, 2003, poppysue from Westbrook, ME (Zone 5a) wrote:
This is a hybrid of G. himalayense x G. wallichianum 'Buxton's Variety'
Regional...
This plant has been said to grow in the following regions:
Aptos, California Calistoga, California Eureka, California Hoopa, California Mission Viejo, California San Francisco, California San Jose, California Aurora, Colorado Denver, Colorado (2 reports) Glastonbury, Connecticut Seymour, Connecticut Wallingford, Connecticut Gainesville, Georgia Waukegan, Illinois Gary, Indiana West Des Moines, Iowa Skowhegan, Maine Silver Spring, Maryland Lakeville, Massachusetts Caledonia, Michigan Rochester, Minnesota Nashua, New Hampshire Bridgewater, New Jersey Freehold, New Jersey Princeton Junction, New Jersey Hartford, New York Manlius, New York Nineveh, New York Rochester, New York West Islip, New York Cleveland, Ohio Mill City, Oregon Coopersburg, Pennsylvania Norristown, Pennsylvania Portage, Pennsylvania Rockton, Pennsylvania Sarver, Pennsylvania State College, Pennsylvania Anderson, South Carolina Aberdeen, South Dakota Knoxville, Tennessee Frisco, Texas Lexington, Virginia Arlington, Washington Kalama, Washington Langley, Washington Puyallup, Washington Seattle, Washington Vancouver, Washington Madison, Wisconsin