French Marigold is an annual grown for its blooms, which open from spring through fall. Notably, it shrugs off deer and grows just as well in a container as in the ground. Its flowers are a moderate draw for honeybees, native bees, and butterflies.
French Marigold — the short answer
French Marigold: full sun, pH 6–7.5, about 50 days to maturity.
- Soil pH
- 6–7.5
- Growable Ground Plant Database
- Sun
- Full Sun
- Growable Ground Plant Database
- Days to Maturity
- 50 days
- UMD-Herb; Johnny's
- Frost-kill temperature
- 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.
Which pests actually threaten french marigold where you grow?
Japanese beetle is only documented in part of the country, so the answer depends on where you plant. Enter your location and we'll tell you which one reaches your land — and the move that beats it.
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See French Marigold
What French Marigold is
French Marigold grows as an annual and reaches around a foot at maturity. It blooms from spring through fall. It's also deer-resistant and well suited to containers.
How to grow French Marigold
French Marigold does best in full sun — at least 6 hours of direct sun a day — and soil from pH 6 to 7.5, on well-drained ground. It needs around 1,500 growing degree days to mature and a growing season of at least 50 frost-free days, which is why climate matters as much as soil.
USDA Zones
Data pending
Soil pH
6 - 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
50 days
French marigold; annual companion plant; nematode suppression.
UMD-Herb; Johnny's
GDD Required
1500+
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
1 ft
Growable Ground plant catalog
Frost-Free Days
50+
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 french marigold in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
French Marigold prefers pH 6 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 french marigold blooms in the cool of the morning, just as they open, for the longest display.
Where French Marigold thrives
Whether french marigold thrives on a given site comes down to its soil pH, drainage, sun, and frost dates — the conditions that vary parcel to parcel.
What grows around French Marigold
Growing guides for french marigold
In rotation planning, french marigold 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 — french marigold isn't known to be toxic to dogs or cats. (Source: ASPCA.)
French Marigold offers moderate value to bees and other pollinators. (Source: Pollinator Partnership.)
Your land is one point inside French Marigold'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 French Marigold will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether french marigold 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 French Marigold
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 French Marigold in my zone?
Zone data for french marigold is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant French Marigold?
Most growers plant french marigold after the last spring frost, once the soil has warmed, leaving enough of the season for its 50-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 French Marigold need?
French Marigold 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 French Marigold need?
French Marigold prefers soil pH 6 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 French Marigold attract pollinators?
Yes — french marigold's flowers are a solid nectar source for honeybees, native bees, and butterflies. (Source: Pollinator Partnership.)
Is French Marigold safe for pets?
French Marigold is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)