Mazus is a cover crop — grown to build and protect the soil rather than for a harvest of its own. It's hardy across USDA zones 5 through 8, shrugs off deer and grows just as well in a container as in the ground. Its summer flowers are a modest draw for native bees.
Mazus — the short answer
Mazus: grown in zones 5–8, part sun, pH 5.5–7.5.
- USDA zones
- 5–8
- 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
- Part Sun
- 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 Mazus on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether mazus actually takes — and those shift from one yard to the next. Enter your address and we'll score mazus against your land's real conditions.
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What Mazus is
Mazus grows as a perennial and reaches around 2 inches at maturity. It blooms blue in summer. It's also deer-resistant and well suited to containers.
How to grow Mazus
Mazus grows in USDA zones 5 through 8. Mazus does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5.5 to 7.5, on well-drained ground. It needs a growing season of at least 120 frost-free days, which is why climate matters as much as soil.
USDA Zones
5-8
USDA PHZM 2023
Soil pH
5.5 - 7.5
Growable Ground Plant Database
Sun
Part Sun
Growable Ground plant catalog
Drainage
well (dry spells)
Growable Ground plant catalog
Mature Height
0.2 ft
Growable Ground plant catalog
Frost-Free Days
120+
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 mazus in part sun with at least 4 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.
Match the soil
Mazus 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.
Turn it in before it seeds
Cut mazus down or turn it into the soil before it sets seed, while the growth is still green — that's when it returns the most to the ground.
Where Mazus thrives
Mazus is hardy across USDA zones 5 through 8. 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 5–8 spans average winter lows from -20°F to 20°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 19 outright and splits 31 more down the middle — and which side of that line your land sits on changes the answer.
Zones 5–8·Where Mazus 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 Mazus stands, state by state
Mazus is rated for zones 5–8 — a cold floor USDA puts at -20 to -10°F. Across the 50 states and DC, 19 sit fully inside that band, the line runs through 31 more, and 1 sits outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 5–8
19 states
3 of 19 shown
The line runs through
31 states
3 of 31 shown
Mazus’s band covers part of each of these states — which side of the line your county sits on changes the answer, and each state page draws it.
Outside zones 5–8
1 state
- North Dakota · zones 3b-4b
Winter cold is the limit here — the same plant often works in a container that comes under cover. Each link is that state’s own growing hub.
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 Mazus
Growing guides for mazus
In rotation planning, mazus 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)
Related plants in grass/groundcover
Good to know
Good news for pet owners — mazus isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Mazus offers low value to bees and other pollinators.
Your land is one point inside Mazus'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 Mazus will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether mazus 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 Mazus
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 Mazus in my zone?
Mazus grows in USDA hardiness zones 5 through 8 (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 Mazus?
Mazus 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 Mazus need?
Mazus 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 Mazus need?
Mazus 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 Mazus attract pollinators?
Yes — mazus's flowers are a modest nectar source for native bees.
Is Mazus safe for pets?
Mazus is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)
Keep exploring Mazus
Mazus state by state
Every state mazus's zone reaches — 1 link straight to that state's mazus growing page; the rest open the state's full growing guide.