Ontario Wildflowers website

Yellow Giant Hyssop
(Agastache nepetoides)

Yellow Giant Hyssop (Agastache nepetoides) Other common names: Catnip Giant Hyssop

Other scientific names: Hyssopus nepetoides, Lophanthus nepetoides

French names: Agastache faux-népéta

Family: Mint Family (Lamiaceae)

Flowers: Summer;  Yellow;  Irregular flowers

Leaves: Opposite/Whorled, Simple

Height: 60-180 cm (23-70 in)

Habitat: Forests

Grows in Sun/Shade: Shade

Books: Newcomb's Wildflower Guide: 82   

Notes: Not prized for its beauty, it is a plant for naturalized gardens and pollinators. Research has shown this to be one of Ontario's top 20 plants for feeding pollinating insects. Because it is rare in southern Ontario, except west of London, it should not be planted in the wild.

Photographs: 69 photographs available, of which 9 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

Yellow Giant Hyssop (Agastache nepetoides) flower spike

Yellow Giant Hyssop flower spike.

Yellow Giant Hyssop (Agastache nepetoides) flower

Individual flower.

Yellow Giant Hyssop (Agastache nepetoides) flowers

flowers.

Yellow Giant Hyssop (Agastache nepetoides) plant

An entire Yellow Giant Hyssop plant. It can get fairly tall.

Yellow Giant Hyssop (Agastache nepetoides) young plant

A young plant.

Yellow Giant Hyssop (Agastache nepetoides) leaves

Yellow Giant Hyssop leaves.

Yellow Giant Hyssop (Agastache nepetoides) leaf

Underside of leaf.

Yellow Giant Hyssop (Agastache nepetoides) stem

Stem.

Yellow Giant Hyssop (Agastache nepetoides) stem

Dried out stem in April.


Range map for Yellow Giant Hyssop (Agastache nepetoides)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)