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.
Oregano — the short answer
Oregano: grown in zones 4–9, part sun, pH 4.5–8.7, about 80 days to maturity.
- USDA zones
- 4–9
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- Soil pH
- 4.5–8.7
- FAO ECOCROP
- Sun
- Part Sun
- Growable Ground Plant Database
- Days to Maturity
- 80 days
- UMD-Herb; RHS
- Frost-kill temperature
- 32°F
- FAO ECOCROP
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — each tile names its own row's source, because per-field provenance varies.
Score Oregano on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether oregano actually takes — and those shift from one yard to the next. Enter your address and we'll score oregano against your land's real conditions.
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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 part sun — at least 4 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
FAO ECOCROP
Sun
Part Sun
Growable Ground plant catalog
Drainage
well (dry spells)
Growable Ground plant catalog
Frost Kill Temperature
32°F
Where cold starts killing growing tissue. Not a winter-survival floor — a dormant perennial takes far colder, which its hardiness zone answers.
FAO ECOCROP
Minimum Growing Temperature
39.2°F
Below this it stops growing rather than dies — a pace limit, not a survival limit.
FAO ECOCROP
Days to Maturity
80 days
Oregano; perennial; harvest before flowering for peak flavor.
UMD-Herb; RHS
GDD Required
1800+
Growing degree-days of accumulated warmth it needs to mature — humid summers reach this faster than cool coastal ones.
Growable Ground plant catalog
Mature Height
2 ft
Growable Ground plant catalog
Frost-Free Days
180+
The frost-free stretch it needs start to finish — short-season areas may need an indoor head start.
Growable Ground plant catalog
Start the season right
Plant oregano in part sun with at least 4 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 (FAO ECOCROP). 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.
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.
A USDA zone is a 10°F band of average annual extreme winter minimum, so zones 4–9 spans average winter lows from -30°F to 30°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 33 outright and splits 18 more down the middle — and which side of that line your land sits on changes the answer.
Zones 4–9·Where Oregano growsOpen map →
Where Oregano stands, state by state
Oregano is rated for zones 4–9 — a cold floor USDA puts at -30 to -20°F. Across the 50 states and DC, 33 sit fully inside that band, the line runs through 18 more, and 0 sit outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 4–9
33 states
3 of 33 shown
State zone extents: USDA Plant Hardiness Zone Map (PHZM) 2023. A zone is a 10°F band of average annual extreme minimum temperature, so a state that splits the band contains the boundary — its own page draws the county line, and a parcel report resolves which side your land sits on.
What grows around Oregano
Growing guides for oregano
In rotation planning, oregano counts as a Other — beds recover best when other crops don’t follow each other in the same spot year over year. (Growable Ground derivation — crop-rotation group from botanical family)
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: Pollinator Partnership.)
Before you harvest oregano, know your soil
Anything you grow to eat takes up what's in the ground it grows in, so it's worth knowing what's documented near you before you plant oregano for food. Our free screen reads 9 federal source types across roughly 1.8M indexed sites and shows which sit near your address and which way they drain. It's a screening estimate from public records and proximity — not a soil test — so a nearby record means a soil test is worth it, not that your soil is unsafe.
Your land is one point inside Oregano's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
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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How we know this about Oregano
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database•USDA PHZM•ASPCA
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 does well in partial sun — around 4 hours of direct sun, and it takes some afternoon shade in stride. That flexibility makes it a good match for a bed the house or a nearby tree shades for part of the day. A Growable Ground report maps how the sun actually falls on your land, hour by hour, so you can set it where the light lines up.
What soil does Oregano need?
Oregano prefers soil pH 4.5 to 8.7, on well-drained ground (FAO ECOCROP). 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. (Source: Pollinator Partnership.)
Is Oregano safe for pets?
Oregano is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)