Oregano is a perennial culinary herb, grown for the flavor it brings to the kitchen, ready to harvest about 80 days after planting. It's hardy across USDA zones 4 through 9 and stands up to deer. Its summer flowers are a real draw for honeybees, native bees, and butterflies, even though the harvest is the prize.
Zones
4-9
pH Range
4.5-8.7
Sun
Full Sun
Days to Maturity
80
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What Oregano is
Oregano grows as a perennial and reaches around two feet at maturity. It blooms pink in summer. It's also deer-resistant.
How to grow Oregano
Oregano grows in USDA zones 4 through 9 and is ready to harvest about 80 days after planting. Oregano does best in full sun — at least 6 hours of direct sun a day — and soil from pH 4.5 to 8.7, on well-drained ground. It needs around 1,800 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
4-9
USDA PHZM 2023
Soil pH
4.5 - 8.7
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Frost Tolerance
39.2°F
plant_species_v5.csv
Days to Maturity
80 days
Oregano; perennial; harvest before flowering for peak flavor.
UMD-Herb; RHS
GDD Required
1800+
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 oregano in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Oregano prefers pH 4.5 to 8.7 (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 maturity
Oregano is ready about 80 days after planting (UMD-Herb; RHS). Snip sprigs as you need them — regular cutting keeps the foliage tender and slows it bolting to flower.
Good to know
Good news for pet owners — oregano isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Oregano is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Oregano thrives
Oregano is hardy across USDA zones 4 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 4–9·Where Oregano growsOpen map →
On USDA hardiness-zone overlap, Oregano can grow in these states:
See if Oregano will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether oregano 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 Oregano in my zone?
Oregano grows in USDA hardiness zones 4 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 Oregano take to grow?
Oregano is ready to harvest about 80 days after planting (UMD-Herb; RHS). Your local frost dates and soil temperature move that window earlier or later.
When should you plant Oregano?
Most growers plant oregano 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 Oregano need?
Oregano 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 Oregano need?
Oregano prefers soil pH 4.5 to 8.7, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Oregano attract pollinators?
Yes — oregano's flowers are a strong nectar and pollen source for honeybees, native bees, and butterflies (Xerces Society, Pollinator Partnership).
Is Oregano safe for pets?
Oregano is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.