Moderate to grow
giant hyssop
Agastache 'Black Adder'
Related plants
Other plants you might like if you grow giant hyssop.
anise hyssop
Agastache foeniculum
beautyberry
Callicarpa americana
beautyberry
Callicarpa bodinieri
beautyberry
Callicarpa bodinieri var. giraldii 'Profusion'
beautyberry
Callicarpa cathayana
beautyberry
Callicarpa dichotoma
beautyberry
Callicarpa dichotoma 'Early Amethyst'
beautyberry
Callicarpa dichotoma f. albifructa