Xeranthemum is an annual grown for its blooms, which open from summer through fall. It's hardy across USDA zones 3 through 11, shrugs off deer, shrugs off dry spells, and grows just as well in a container as in the ground. Its flowers are a moderate draw for honeybees, native bees, and butterflies.
Xeranthemum — the short answer
Xeranthemum: grown in zones 3–11, full sun, pH 5.5–7.5, about 85 days to maturity.
- USDA zones
- 3–11
- 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
- 5.5–7.5
- Growable Ground Plant Database
- Sun
- Full Sun
- Growable Ground Plant Database
- Days to Maturity
- 85 days
- Growable Ground Plant Database
- Frost-kill temp (growing season)
- 32°F
- Growable Ground Plant Database
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 Xeranthemum on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether xeranthemum actually takes — and those shift from one yard to the next. Enter your address and we'll score xeranthemum against your land's real conditions.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
What Xeranthemum is
Xeranthemum grows as an annual and reaches around 2.5 feet at maturity. It blooms from summer through fall. It's also deer-resistant and well suited to containers.
How to grow Xeranthemum
Xeranthemum grows in USDA zones 3 through 11. Xeranthemum does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.5 to 7.5, on well-drained ground. It needs around 1,200 growing degree days to mature and a growing season of at least 60 frost-free days, which is why climate matters as much as soil.
USDA Zones
3-11
USDA PHZM 2023
Soil pH
5.5 - 7.5
Growable Ground Plant Database
Sun
Full 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.
Growable Ground Plant Database
Days to Maturity
85 days
Growable Ground plant catalog
GDD Required
1200+
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
2.5 ft
Growable Ground plant catalog
Frost-Free Days
60+
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 xeranthemum in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Xeranthemum prefers pH 5.5 to 7.5 (Growable Ground Plant 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
Cut xeranthemum blooms in the cool of the morning, just as they open, for the longest display.
Where Xeranthemum thrives
On hardiness alone, xeranthemum grows across most of the country — its range (USDA zones 3 through 11) is unusually wide. 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 3–11 spans average winter lows from -40°F to 50°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 48 outright and splits 3 more down the middle — and which side of that line your land sits on changes the answer.
Zones 3–11·Where Xeranthemum 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 Xeranthemum stands, state by state
Xeranthemum is rated for zones 3–11 — a cold floor USDA puts at -40 to -30°F. Across the 50 states and DC, 48 sit fully inside that band, the line runs through 3 more, and 0 sit outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 3–11
48 states
3 of 48 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 Xeranthemum
Growing guides for xeranthemum
Related plants in annual flower
Good to know
Good news for pet owners — xeranthemum isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Xeranthemum offers moderate value to bees and other pollinators.
Your land is one point inside Xeranthemum'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 Xeranthemum will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether xeranthemum 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.
25+ data sources analyzed in seconds
How we know this about Xeranthemum
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 Xeranthemum in my zone?
Xeranthemum grows in USDA hardiness zones 3 through 11 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Xeranthemum?
Most growers plant xeranthemum after the last spring frost, once the soil has warmed, leaving enough of the season for its 60-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 Xeranthemum need?
Xeranthemum 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 Xeranthemum need?
Xeranthemum prefers soil pH 5.5 to 7.5, on well-drained ground (Growable Ground Plant Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Xeranthemum attract pollinators?
Yes — xeranthemum's flowers are a solid nectar source for honeybees, native bees, and butterflies.
Is Xeranthemum safe for pets?
Xeranthemum is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)
Keep exploring Xeranthemum
Xeranthemum state by state
Every state xeranthemum's zone reaches — 16 link straight to that state's xeranthemum growing page; the rest open the state's full growing guide.