Clustered Rose
Rosa pisocarpa
Rosaceae · broadleaf deciduous shrub · native
Last updated
Data Maturity Structured
This profile synthesizes data from multiple published sources. Expert field review is in progress.
Clustered rose (Rosa pisocarpa), also called swamp rose, is a broadleaf shrub in the Rosaceae family native to western North America from southern British Columbia to northern California. It reaches 8 ft tall and produces clusters of 2-10 deep pink flowers 1-2 cm across.
Clustered rose is hardy in zones 7a-8b and tolerates full sun to shade. Thirty-three diseases and 29 pests are documented. Detailed site preferences require further enrichment from authoritative sources.
Quick Facts
Height
8 ft
Light
Full Sun to Shade
Hardiness
Zone Zones 7a–8b
Origin
Pacific Northwest native
Diseases (23)
Armillaria ostoyae Armillaria Root Rot Bacterial Cane Blight Bacterial Leaf Spot and Blast Chlaropsis thielavioides Black Mold [NOTE: Diplocarpon rosae causes black spot on roses (Rosa... Black Spot Botrytis Bud and Twig Blight Two fungi Brand and Common Canker Cryptosporella umbrina (anamorph: Diaporthe umbrina) Brown Canker Bullhead Chemical Injury Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall Peronospora sparsa Downy Mildew Several fungal (primarily Rosisphaerella rosicola/Cercosp... Leaf Spots, Miscellaneous Lime-induced Chlorosis Phytophthora spp. (P Phytophthora Root Rot Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Pythium spp., Phytophthora spp., Rhizoctonia spp., Fusari... Replant Disease Several viruses Rose Mosaic Thekopsora minima and Naohidemyces vaccinii Rust Verticillium dahliae Verticillium Wilt Blueberry mosaic virus and related viruses Virus Diseases Winter Injury Raspberry bushy dwarf virus and related viruses Virus
Pests (27)
Aphidoidea Aphid Hyphantria cunea Fall webworm Cynipidae Gall wasp Megachile spp. Leafcutting bee Tortricidae Leafroller Cane maggot Otiorhynchus spp. Root weevil Merhynchites bicolor Rose curculio Rose sawfly Marmara spp. Rose stem miner Ceratina spp. Small carpenter bee Tetranychidae Spider mite Malacosoma spp. Tent caterpillar Western red-humped caterpillar Macrosiphum rosae Rose aphid Rose thrips Brand canker Common canker Schizura concinna Redhumped caterpillar Diplolepis rosae Rose galls Edwardsiana rosae Rose leafhopper Dasineura rhodophaga Rose midge Endelomyia aethiops Roseslug Thysanoptera Thrips Chloridea virescens Tobacco budworm Diabrotica undecimpunctata Western spotted cucumber beetle Nematodes