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PlantFiles: Prickly Rose
Rosa acicularis subsp. sayi

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Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rosa (RO-zuh) (Info)
Species: acicularis subsp. sayi

Synonym:Rosa bourgeauiana
Synonym:Rosa Rosa acicularis var. sayana
Synonym:Rosa collaris
Synonym:Rosa engelmannii
Synonym:Rosa sayi

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Class:
Shrub

Height:
36-48 in. (90-120 cm)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 2a: to -45.5 C (-50 F)
USDA Zone 6b: to -20.5 C (-5 F)

Bloom Color:
Dark red (dr)
Mauve and mauve blend (mb)

Bloom Shape:
Single

Flower Fragrance:
Very Fragrant

Bloom Time:
Late Spring/Early Summer
Mid Summer

Habit:
Shrub

Patent Information:
Non-patented

Other Details:
Shade-tolerant
Susceptible to black spot
Susceptible to mildew
Susceptible to rust
Stems are very thorny
Sets hips

Pruning Instructions:
Blooms on old wood; prune after flowering

Soil pH requirements:
6.6 to 7.5 (neutral)

Propagation Methods:
By dividing the rootball
From woody stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

No details have been posted.

Regional...

This plant has been said to grow in the following regions:

Halifax, Massachusetts



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