Kerria is a perennial grown for its yellow blooms, which open in spring and return year after year. It's hardy across USDA zones 4 through 9 and shrugs off deer. Its spring flowers are a moderate draw for honeybees and native bees.
Kerria — the short answer
Kerria: grown in zones 4–9, shade, pH 5.5–7.5.
- USDA zones
- 4–9
- Hardy to zone 4a — NC State Extension Gardener Plant Toolbox.
- Soil pH
- 5.5–7.5
- We haven't confirmed this against a published source yet.
- Sun
- Shade
- We haven't confirmed this against a published source yet.
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 Kerria on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether kerria actually takes — and those shift from one yard to the next. Enter your address and we'll score kerria against your land's real conditions.
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What Kerria is
Kerria grows as a perennial and reaches around seven feet at maturity. It blooms yellow in spring. It's also deer-resistant.
Mature height, bloom period and flower colour: We haven't confirmed this against a published source yet.
How to grow Kerria
Kerria grows in USDA zones 4 through 9. Kerria does best in shade — at least 2 hours of direct sun a day — and soil from pH 5.5 to 7.5, on well-drained ground.
USDA Zones
4-9
Rated hardy to zone 4a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.
Soil pH
5.5 - 7.5
We haven't confirmed this against a published source yet.
Sun
Shade
We haven't confirmed this against a published source yet.
Drainage
well (dry spells)
Converted from NC State Extension Gardener Plant Toolbox
Mature Height
7 ft
We haven't confirmed this against a published source yet.
Start the season right
Plant kerria in shade with at least 2 hours of direct sun. It grows in the cool halves of the year, so sow it in spring or late summer rather than waiting for midsummer heat. We haven't confirmed this against a published source yet.
Match the soil
Kerria prefers pH 5.5 to 7.5. We haven't confirmed this against a published source yet. 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. We haven't confirmed this against a published source yet. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at its peak
Cut kerria blooms in the cool of the morning, just as they open, for the longest display.
Where Kerria thrives
Kerria 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 Kerria growsOpen map →
This map is derived from the USDA ARS / PRISM Plant Hardiness Zone Map (2023) and is not the official USDA Plant Hardiness Zone Map.
Where Kerria stands, state by state
Kerria 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 Kerria
Growing guides for kerria
Good to know
Kerria offers moderate value to bees and other pollinators. We haven't confirmed this against a published source yet.
Your land is one point inside Kerria'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 Kerria will thrive on your land
Zone averages are a start. Your soil pH, drainage, sun exposure, and frost dates shape whether kerria actually takes. We score it against the mapped and modelled 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.
25+ data sources analyzed in seconds
How we know this about Kerria
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
Frequently asked questions
Can I grow Kerria in my zone?
Kerria grows in USDA hardiness zones 4 through 9 (Rated hardy to zone 4a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Kerria?
Kerria is a cool-season crop, so it goes in during the cool halves of the year — early spring, and again in late summer for a fall planting — rather than at the height of summer heat. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Kerria need?
Kerria is shade-tolerant — it gets by on as little as 2 hours of direct sun, so it earns a place most vegetables can't use. We haven't confirmed this against a published source yet. A north-facing strip or the ground under a leafy canopy is right where it belongs. A Growable Ground report shows which corners of your land stay shaded through the day, turning those dim spots into planting spots.
What soil does Kerria need?
Kerria prefers soil pH 5.5 to 7.5, on well-drained ground. We haven't confirmed this against a published source yet. Your report scores your parcel's mapped soil against that using USDA SSURGO data.
Does Kerria attract pollinators?
Yes — kerria's flowers are a solid nectar source for honeybees and native bees. We haven't confirmed this against a published source yet.
Keep exploring Kerria
Kerria state by state
Every state kerria's zone reaches — 1 link straight to that state's kerria growing page; the rest open the state's full growing guide.