Fabaceae
Hedysarum boreale subsp. mackenziei
Hedysarum boreale subsp. mackenziei
Also known as Hedysarum mackenziei var. leucanthum, Hedysarum mackenziei f. niveum, Hedysarum canescens, Hedysarum mackenziei f. proliferum
Flowering Plants · Native Plants · Boreal · Perennial · Legume · Nitrogen-Fixing · Wildflower · Arctic · Native · Sweetvetch · Pollinators · Cold-Hardy
MacKenzie's sweetvetch is a hardy boreal perennial best suited to outdoor gardens in cooler northern climates. Plant in partial shade with average moisture and well-drained soil, and avoid overwatering as it can lead to root rot. This nitrogen-fixing legume requires minimal fertilization and thrives with little intervention once established.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately, keeping soil evenly moist but not waterlogged · Every 7-10 days
- Maintenance
- Moderate
- Soil
- loam
- Soil pH
- 5.2–8
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- Yes
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Idaho, Magadan, Newfoundland, Nunavut, Oregon, Yukon
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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