Commonly referred to as Purple Giant Hyssop, the flowers of this plant are very pale purple, nearly white, not darker purple as seen on it’s cousin Anise Hyssop.
The tall, stately spiers feature an extended bloom time from late June into October and is an incredibly important plant for our buzzy pollinator friends, especially the at-risk Bombus fervidus as well as providing valuable pollen and nectar for other native bees, butterflies, and moths.
Although the Purple Giant Hyssop is a member of the mint family, it forms clumps, and does not take over areas of the garden like a true mint. This plant needs its own space as it is easily out-competed by other plants, and does require some soil disturbance in order to germinate seeds and spread.
Source: grown from seed originally from Minnesota. Prairie Moon Nursery.
Agastache scrophulariifolia (Purple giant hyssop)
SIZE AND POT INFORMATION: More details coming in May type: herbaceous perennial sun needs: full sun, part sun/part shade water needs: Moist to average soil height: 5' plant spacing: 1/sq ft bloom time: July, August, September, October bloom color: white, pink
good plant companions
Sensitive to competition
Endangered in Massachusetts moderate salt tolerance. Some salt exposure should not be fatal to the plant but some leaf burning may still occur. deer resistant (please note that does not mean deer proof)