Oak Summit Nursery
Common Ninebark Seeds
Common Ninebark Seeds
Pack contains: 200+ seeds
Common Ninebark (Physocarpus opulifolius) is a North American shrub known for peeling brown bark that exposes reddish inner layers.
Clusters of white to pink flowers open from late May into June, followed by red seed capsules that may remain into winter. The lobed green leaves turn bronze yellow in fall. Ninebark tolerates wet sites, occasional drought, road salt, and varied soils and can be used for hedges, screens, or erosion control.
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Starting this seed
- Cold2 monthsCold stratification
- SowAfter the cold stage
- Seed source
- Kiev, Ukraine
- Hardiness
- Zone 3
- Mature size
- 5 to 8 ft tall and 4 to 6 ft wide
How to stratify seed
In the fridge. Put the seed in a bag with a damp medium such as peat moss, vermiculite, sand or coco coir. The medium is only there to hold moisture. Keep the bag in the fridge, above freezing, for the cold period shown, then sow.
Or outside. Sow the seed outdoors in the fall and let winter do the cold period.
The plant these seeds grow into
Cold hardinessZone 3 · Canadian maps for this plant
Zone 3 and warmer
The map shows minimum winter hardiness. Soil, moisture and summer warmth also affect how a plant grows.
About these maps
Climate: Natural Resources Canada, 1991–2020. Provincial distribution: VASCAN via retained botanical research. Province outlines: Natural Earth, public domain.
Open Government Licence – Canada
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