Physocarpus, Ninebark, Burgundy Star Ninebark
Physocarpusopulifolius 'R Tres'

Family: Rosaceae (ro-ZAY-see-ee)
Genus: Physocarpus (fy-so-KAR-pus)
Species: opulifolius (op-yoo-lih-FOH-lee-us)
Cultivar: R Tres

Category
Shrubs

Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Sun Exposure
Full Sun
Sun to Partial Shade

Foliage
Deciduous

Foliage Color
Burgundy/Maroon

Height
4-6 ft. (1.2-1.8 m)

Spacing
4-6 ft. (1.2-1.8 m)

Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
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)

Where to Grow

Danger
All parts of plant are poisonous if ingested

Bloom Color
Pale Pink

Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds

Bloom Size

Bloom Time
Late Spring/Early Summer
Mid Summer

Other details

Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
8.6 to 9.0 (strongly alkaline)

Patent Information

Propagation Methods
From hardwood cuttings

Seed Collecting