French Lavender is a perennial medicinal herb, long valued for its traditional uses. It's hardy across USDA zones 8 through 9, stands up to deer and handles dry spells once it's established. Its summer flowers are a real draw for honeybees, native bees, and butterflies.
Zones
8-9
pH Range
5.8-8.3
Sun
Full Sun
Days to Maturity
90
Score French Lavender on your exact land.
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What French Lavender is
French Lavender grows as a perennial and reaches around two feet at maturity. It blooms purple in summer. It's also deer-resistant.
How to grow French Lavender
French Lavender grows in USDA zones 8 through 9 and is ready to harvest about 90 days after planting. French Lavender does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.8 to 8.3, on well-drained to fast-draining ground. It needs around 1,200 growing degree days to mature and a growing season of at least 180 frost-free days, which is why climate matters as much as soil.
USDA Zones
8-9
USDA PHZM 2023
Soil pH
5.8 - 8.3
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
well (dry spells), excessive (dry/moderately dry)
plant_species_v5.csv
Frost Tolerance
44.6°F
plant_species_v5.csv
Days to Maturity
90 days
plant_species_v5.csv
GDD Required
1200+
plant_species_v5.csv
Mature Height
2 ft
plant_species_v5.csv
Frost-Free Days
180+
plant_species_v5.csv
Start the season right
Plant french lavender in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
French Lavender prefers pH 5.8 to 8.3 (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 french lavender for — flower, leaf, or root — at its seasonal peak.
Good to know
One caution for pet owners — french lavender is toxic to dogs and cats (mild severity). Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: ASPCA.)
French Lavender is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where French Lavender thrives
French Lavender is hardy across USDA zones 8 through 9. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
Zones 8–9·Where French Lavender growsOpen map →
On USDA hardiness-zone overlap, French Lavender can grow in these states:
See if French Lavender will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether french lavender actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Frequently Asked Questions
Can I grow French Lavender in my zone?
French Lavender grows in USDA hardiness zones 8 through 9 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
How long does French Lavender take to grow?
French Lavender is ready to harvest about 90 days after planting (University Extension production guides). Your local frost dates and soil temperature move that window earlier or later.
When should you plant French Lavender?
Most growers plant french lavender after the last spring frost, once the soil has warmed, leaving enough of the season for its 180-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 French Lavender need?
French Lavender 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 French Lavender need?
French Lavender prefers soil pH 5.8 to 8.3, on well-drained to fast-draining ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does French Lavender attract pollinators?
Yes — french lavender's flowers are a strong nectar and pollen source for honeybees, native bees, and butterflies (Xerces Society, Pollinator Partnership).
Is French Lavender safe for pets?
French Lavender is toxic to pets (dogs,cats) with mild severity. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency.