Ramps is a perennial multi-use herb, valued for its many uses in the garden. It's hardy across USDA zones 3 through 7 and stands up to deer. Its summer flowers are a moderate draw for honeybees and native bees. As an allium (the onion family), give it a fresh bed each year — away from where its relatives just grew — so the soil-borne pests and diseases of the family never get a foothold.
Zones
3-7
pH Range
4.5-7.5
Sun
Full Sun
To First Harvest
~1 yr
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What Ramps is
Ramps grows as a perennial and reaches around a foot at maturity. It blooms white in summer. It's also deer-resistant.
How to grow Ramps
Ramps grows in USDA zones 3 through 7 and is ready to harvest about one year after planting. Ramps does best in full sun — at least 6 hours of direct sun a day — and soil from pH 4.5 to 7.5, on well-drained ground. It needs around 1,500 growing degree days to mature and a growing season of at least 120 frost-free days, which is why climate matters as much as soil.
USDA Zones
3-7
USDA PHZM 2023
Soil pH
4.5 - 7.5
USDA PLANTS Database
Sun
Full Sun
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Drainage
well (dry spells)
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Frost Tolerance
42.8°F
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To First Harvest
~1 year
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GDD Required
1500+
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Mature Height
1 ft
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Frost-Free Days
120+
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Start the season right
Plant ramps in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Ramps prefers pH 4.5 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 ramps for — flower, leaf, or root — at its seasonal peak.
Good to know
One caution for pet owners — ramps is toxic to dogs and cats (moderate severity). Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: ASPCA.)
Ramps offers moderate value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Ramps thrives
Ramps is hardy across USDA zones 3 through 7. 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 3–7·Where Ramps growsOpen map →
On USDA hardiness-zone overlap, Ramps can grow in these states:
See if Ramps will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether ramps 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 Ramps in my zone?
Ramps grows in USDA hardiness zones 3 through 7 (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 Ramps take to grow?
Ramps is ready to harvest about one year after planting (University Extension production guides). Your local frost dates and soil temperature move that window earlier or later.
When should you plant Ramps?
Most growers plant ramps after the last spring frost, once the soil has warmed, leaving enough of the season for its 120-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 Ramps need?
Ramps 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 Ramps need?
Ramps prefers soil pH 4.5 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 Ramps attract pollinators?
Yes — ramps's flowers are a solid nectar source for honeybees and native bees (Xerces Society, Pollinator Partnership).
Is Ramps safe for pets?
Ramps is toxic to pets (dogs,cats) with moderate severity. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency.