Brassicaceae
Hoary mustard
Hirschfeldia incana
Also known as Whitetop, Hoary cress, White mustard, Hirschfeldia adpressa
Native Plants · Hoary Mustard · Brassica · Wildflower · Pollinator · Low Maintenance · Perennial · Meadow · Yellow Flowers · Hardy · Outdoor
Hoary mustard is a hardy, low-maintenance perennial that tolerates a range of conditions, preferring partial shade and average moisture. It produces small yellow flowers attractive to pollinators and requires little supplemental care once established. Best suited for wildflower gardens, meadow plantings, or naturalized areas.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water lightly; soil can dry out between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.5
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Division
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Algeria, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bolivia, California, Canary Is., Cape Provinces, Central European Rus, Chile Central, Chile North, Corse
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
Buy this plant
No nurseries currently list it
No nursery lists Hoary mustard right now.