Anise Hyssop is a perennial medicinal herb, long valued for its traditional uses. Notably, it stands up to deer and grows just as well in a container as in the ground. Its summer flowers are a real draw for honeybees, native bees, butterflies, and hummingbirds.
Zones
Data not available
pH Range
6-7.5
Sun
Full Sun
Days to Maturity
90
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What Anise Hyssop is
Anise Hyssop grows as a perennial and reaches around four feet at maturity. It blooms purple in summer. It's also deer-resistant and well suited to containers.
How to grow Anise Hyssop
Anise Hyssop is ready to harvest about 90 days after planting. Anise Hyssop does best in full sun — at least 6 hours of direct sun a day — and soil from pH 6 to 7.5, on well-drained ground. It needs around 900 growing degree days to mature and a growing season of at least 100 frost-free days, which is why climate matters as much as soil.
USDA Zones
Data not available
USDA PHZM 2023
Soil pH
6 - 7.5
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Days to Maturity
90 days
Anise hyssop; native perennial; cold strat 30-60d; pollinator favorite.
USDA-NRCS; PrairieMoon
GDD Required
900+
plant_species_v5.csv
Mature Height
4 ft
plant_species_v5.csv
Frost-Free Days
100+
plant_species_v5.csv
Start the season right
Plant anise hyssop in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Anise Hyssop prefers pH 6 to 7.5 (USDA PLANTS Database). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at its peak
Harvest the part you grow anise hyssop for — flower, leaf, or root — at its seasonal peak.
Good to know
Good news for pet owners — anise hyssop isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Anise Hyssop is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Anise Hyssop thrives
Whether anise hyssop thrives on a given site comes down to its soil pH, drainage, sun, and frost dates — the conditions that vary parcel to parcel.
See if Anise Hyssop will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether anise hyssop actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
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Frequently Asked Questions
Can I grow Anise Hyssop in my zone?
Zone data for anise hyssop is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
How long does Anise Hyssop take to grow?
Anise Hyssop is ready to harvest about 90 days after planting (USDA-NRCS; PrairieMoon). Your local frost dates and soil temperature move that window earlier or later.
When should you plant Anise Hyssop?
Most growers plant anise hyssop after the last spring frost, once the soil has warmed, leaving enough of the season for its 100-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Anise Hyssop need?
Anise Hyssop needs full sun — a spot that catches at least 6 hours of direct summer sun a day. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Anise Hyssop need?
Anise Hyssop prefers soil pH 6 to 7.5, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Anise Hyssop attract pollinators?
Yes — anise hyssop's flowers are a strong nectar and pollen source for honeybees, native bees, butterflies, and hummingbirds (Xerces Society, Pollinator Partnership).
Is Anise Hyssop safe for pets?
Anise Hyssop is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.