Rockspirea
Holodiscus discolor
- Native to:
- Canada, Mexico, United States
Matt Lavin (www.flickr.com) from Bozeman, Montana, USA,JerryFriedman,Kenraiz,Kenraiz,Kenraiz,Kenraiz,Kenraiz,Kenraiz,Kenraiz,Thayne Tuason,JerryFriedman
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Rosaceae
- Genus:
- Holodiscus
- Species:
- Holodiscus discolor
- USDA Symbol:
- HODU
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Shrub
- Height:
- 400 cm
- Light Requirements:
- Full Sun,Part Shade
- Drought Tolerance:
- High
- Bloom Months:
- jun,jul,aug
- Bloom Colors:
- white, cream
- Landscaping Shrub:
- Yes
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
Host Plant for Caterpillars
Acerra normalis, Adela septentrionella, American Swordgrass Moth (Xylena nupera), Blinded Sphinx (Paonias excaecata), broad-winged hesperumia (Hesperumia latipennis), Coleophora sp. C, Darwin's emerald (Nemoria darwiniata), Double Dart (Graphiphora augur), Egira hiemalis, Elegant Sheep Moth (Hemileuca eglanterina), Epinotia johnsonana, Eulithis xylina, Forked Euchlaena Moth (Euchlaena tigrinaria), George's pinion (Lithophane georgii), gray swordgrass (Xylena cineritia), hibiscus Quaker (Orthosia hibisci), Oncocnemis columbia, Oncocnemis dunbari, Orthosia praeses, Peppered Moth (Biston betularia), Pero gigantea, Phyllonorycter holodisci, Purple birch leafminer (Eriocrania semipurpurella), Spilosoma pteridis, Spotted Tussock Moth (Lophocampa maculata), sulphur moth (Hesperumia sulphuraria), Synaxis jubararia, Three-spotted sallow (Eupsilia tristigmata), Brown Elfin (Incisalia augustinus), Lorquin's admiral (Basilarchia lorquini), Pale Swallowtail (Papilio eurymedon), Weidemeyer's Admiral (Basilarchia weidemeyerii)
Reported Fauna Sightings
Bees: Fuzzy-horned bumble bee (Bombus mixtus), Two-form bumble bee (Bombus bifarius), Yellow head bumble bee (Bombus flavifrons), Yellow-faced bumble bee (Bombus vosnesenskii) Moths:Adela septentrionella, Phyllonorycter holodisci, Purple birch leafminer (Eriocrania semipurpurella) Butterflies:Lorquin's Admiral (Limenitis lorquini)
Garden & Ecology Notes
- Wildlife Value:
- birds, butterflies, bees, small mammals
- Deer Resistant:
- Yes
- Fragrant:
- Yes
- Fall Color:
- yellow, bronze
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts vigorously from root crown after fire. Common early successional species in post-fire communities.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 90–120 days
- Germination Time:
- 30–90 days
- Notes:
- Seeds require light for germination. Fresh seed germinates better than stored seed.
The above propagation data sourced from Claude AI