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Agastache urticifolia

Horse Mint · Nettleleaf Giant-hyssop · Horsemint Giant Hyssop · Nettleleaf Giant Hyssop

Family LamiaceaeGenus Agastache

Several stems topped with short dense pink flower spikes, stamens standing clear of the florets, above broad toothed leaves
FlowerDcrjsrCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
perennialPlants of the World Online
Habit
Perennial, Forb/herb, SubshrubPLANTS Database
Height
5.0 ft1.5 mPLANTS Database
Flower
RedPLANTS Database
Blooms
Late SpringPLANTS Database
Native range
Canada, lower 48 statesPLANTS Database

Growing conditions

Sun
Shade tolerance: MediumPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
6.0-8.0PLANTS Database
Moisture
Moisture use: MediumPLANTS Database
Watering
Drought tolerance: LowPLANTS Database

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS.

Worth knowing

  • The dried leaves and flowers of nettleleaf giant hyssop can be made into tea. Several Native American groups used the plant, especially its leaves, as medicine for rheumatism, upset stomachs and colds. Wikipedia: Agastache urticifolia

Protocol

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 8 days to germinate.

13% germination in 5–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Agastache p. 89Public domain
Show the original text
Agastache (Lamiaceae). Results were complex with the stimulation of germination by light and GA-3 being eliminated by 3 m at 40 in A. urticifolium germ. 70D or 70L(13% in 5-8 d). Seed sown at 40 rotted.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Agastache p. 89. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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