Roman Chamomile is a perennial medicinal herb, long valued for its traditional uses. It's hardy across USDA zones 3 through 9, stands up to deer and grows just as well in a container as in the ground. Its summer flowers are a moderate draw for honeybees and native bees.
Zones
3-9
pH Range
5.5-8
Sun
Full Sun
Days to Maturity
90
Score Roman Chamomile on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether roman chamomile actually takes — and those shift from one yard to the next. Enter your address and we'll score roman chamomile against your land's real conditions.
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What Roman Chamomile is
Roman Chamomile grows as a perennial and reaches around 6 inches at maturity. It blooms white in summer. It's also deer-resistant and well suited to containers.
How to grow Roman Chamomile
Roman Chamomile grows in USDA zones 3 through 9 and is ready to harvest about 90 days after planting. Roman Chamomile does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.5 to 8, on well-drained ground. It needs around 700 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
3-9
USDA PHZM 2023
Soil pH
5.5 - 8
USDA PLANTS Database
Sun
Full Sun
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Drainage
well (dry spells)
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Frost Tolerance
37.4°F
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Days to Maturity
90 days
Roman chamomile; perennial; mat-forming groundcover.
UMD-Herb; RHS
GDD Required
700+
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Mature Height
0.5 ft
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Frost-Free Days
180+
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Start the season right
Plant roman chamomile in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Roman Chamomile prefers pH 5.5 to 8 (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 roman chamomile for — flower, leaf, or root — at its seasonal peak.
Good to know
Good news for pet owners — roman chamomile isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Roman Chamomile offers moderate value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Roman Chamomile thrives
Roman Chamomile is hardy across USDA zones 3 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 3–9·Where Roman Chamomile growsOpen map →
On USDA hardiness-zone overlap, Roman Chamomile can grow in these states:
See if Roman Chamomile will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether roman chamomile 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 Roman Chamomile in my zone?
Roman Chamomile grows in USDA hardiness zones 3 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 Roman Chamomile take to grow?
Roman Chamomile is ready to harvest about 90 days after planting (UMD-Herb; RHS). Your local frost dates and soil temperature move that window earlier or later.
When should you plant Roman Chamomile?
Most growers plant roman chamomile 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 Roman Chamomile need?
Roman Chamomile 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 Roman Chamomile need?
Roman Chamomile prefers soil pH 5.5 to 8, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Roman Chamomile attract pollinators?
Yes — roman chamomile's flowers are a solid nectar source for honeybees and native bees (Xerces Society, Pollinator Partnership).
Is Roman Chamomile safe for pets?
Roman Chamomile is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.