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Oxytropis Species, Purple Oxytrope, Blackish Oxytrope

Oxytropisnigrescens

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Oxytropis nigrescens by Grasmussen
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Family
Fabaceae (fab-AY-see-ee)
Info
Genus
Oxytropis (ok-SEE-troh-pus)
Info
Species
nigrescens (ny-GRESS-enz)
Info
Synonym
Astragalus nigrescens
Oxytropis bryophila
Oxytropis coluteoides
Oxytropis gorodkovii
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
under 6 in. (15 cm)
Spacing

Unknown - Tell us

Hardiness
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
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)
Danger

Unknown - Tell us

Bloom Color
Medium Blue
Blue-Violet
Dark Purple/Black
Bloom Time
Late Spring/Early Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements

Unknown - Tell us

Foliage Color

Unknown - Tell us

Where to Grow

Unknown - Tell us

Bloom Characteristics

Unknown - Tell us

Bloom Size

Unknown - Tell us

Other details

Unknown - Tell us

Soil pH requirements

Unknown - Tell us

Patent Information

Unknown - Tell us

Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Central, Alaska

Nome, Alaska

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Grasmussen
Anchorage, AK (Zone 4a) | July 2007 | neutral

Purple Oxytrope, Oxytropis nigrescens, is found on dry exposed mountain ridges and open exposed dry tundra throughout most of Alaska as w...Read More

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