Common name: Sundial Lupin / Wild Lupin.
Native: Eastern North America.
Size and spread (10 years): 0.5m
Treatment required: Leguminous, may require scarification or soaking in water.
Seeds / kg: c. 43,000; 46% viable
Ideal sowing period: Spring
Soil conditions: Most well drained soils.
Planting instructions: flowering is best in an open sunny spot.
Mature height: 0.5m
pic courtesy of Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0 , via Wikimedia Commons