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Agastache nepetoides

Common Name(s)
Yellow giant hyssop
Flowering Time
July to August
Fruit/Seed Maturation Sign
Seeds turn brown; remains of sepals turn brown-black
Fruit/Seed Collection Dates
Mid to late September

Transplants in a field study had 33% survival after 7 years (Mottl et al. 2006); hyssop self-sows and can spread by seed once established (Mottl et al. 2006); however, experimental seed addition in a small field study resulted in establishment in only 5-8% of plots after three years (Brudvig et al. 2011).

Seed output 25-100/plant; high vegetative spread (Barkley 1986, Gleason and Cronquist 1991).

Yellow giant hyssop (Agastache nepetoides)

Seed Cleaning
None required, seeds fall out of calyx cups as they dry; rest can be easily removed by pressing through a screen
Restoration Potential