

Rockspirea Holodiscus dumosus
Rockspirea is a perennial shrub native to the lower 48 states. It grows to 3 ft and blooms Aug in part shade – shade, with brown fruit.
More about this plant
Holodiscus discolor, commonly known as ocean spray or oceanspray, creambush, ironwood, mountain spray, and rock-spiraea, is a shrub of western North America. Wikipedia →
Growing & care
USDA PLANTS · TRY- Sun
- Part shade – shade
- Soil & moisture
- Low moisture
- Soil pH
- 7–8
- Fertility need
- Low
- Adapts to
- Coarse (sandy), Medium (loam)
- Hardiness
- USDA zone 5+
- Height
- 3 ft
- Spacing
- 9–12 ft apart from USDA planting density
- Spread
- Rapid
- Growth rate
- Moderate
- Growth form
- Thicket-forming
- Lifespan
- Perennial · moderate
- Foliage
- Deciduous broadleaf · medium texture
- Active growth
- Summer & autumn
- Fruit
- Brown persists into winter
- Propagate by
- Seed, Cuttings, Bare root, Container
- Seed starting
- Needs cold stratification a cold-moist spell before it germinates
- Seeds ripen
- Summer – Autumn seed-collection / harvest window
- In the trade
- Contract growing only
- Deer browsing
- Medium moderately palatable
- Resprouts if cut
- Yes regrows after top-kill
Sow timing keys off your local last- and first-frost dates.
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts Documented caterpillar host
Recorded feeding on Holodiscus in North America, including:
+ 8 more species → ↑ show fewer
How we know this (1) Methods & honest limits
A recorded categorical fact: each species is tagged C3 (standard), C4 (heat/water-efficient) or CAM (succulent, night-time CO₂ uptake) — or a facultative combination. We only show a trait card for the noteworthy C4/CAM cases; C3 is the unremarkable majority, kept in the data but not surfaced as a card.
Sources for this entry (27) Open & cited
Cite this page Open data, please attribute
PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).
Loading…
BibTeX
Loading…