Nasturtium is an annual grown for its blooms, which open from spring through fall. Notably, it shrugs off deer. Its flowers are a moderate draw for honeybees, native bees, butterflies, and hummingbirds.
Nasturtium — the short answer
Nasturtium: about 55 days to maturity.
- Days to Maturity
- 55 days
- UMD-Herb; Johnny's
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 Nasturtium on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether nasturtium actually takes — and those shift from one yard to the next. Enter your address and we'll score nasturtium against your land's real conditions.
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What Nasturtium is
Nasturtium grows as an annual and reaches around a foot at maturity. It blooms from spring through fall. It's also deer-resistant.
How to grow Nasturtium
It needs around 650 growing degree days to mature, which is why climate matters as much as soil.
USDA Zones
Grown as an annual — see the growing season
Soil pH
Data pending
Sun
Data pending
Drainage
Data pending
Days to Maturity
55 days
Nasturtium; annual edible flower; full sun; cool-season.
UMD-Herb; Johnny's
GDD Required
650+
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
Start the season right
Plant nasturtium in full sun.
Match the soil
Pull a soil test from your local Extension lab to confirm pH and drainage match nasturtium's needs before planting.
Water steadily
Keep the root zone evenly moist through establishment. Match watering to the plant's drainage preference and your local rainfall.
Harvest at its peak
Cut nasturtium blooms in the cool of the morning, just as they open, for the longest display.
Where Nasturtium thrives
Whether nasturtium 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 Nasturtium
Growing guides for nasturtium
Related plants in annual flower
Good to know
Nasturtium offers moderate value to bees and other pollinators. (Source: Pollinator Partnership.)
Your land is one point inside Nasturtium'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 Nasturtium will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether nasturtium 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 Nasturtium
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•ASPCA
Frequently asked questions
Can I grow Nasturtium in my zone?
Zone data for nasturtium is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant Nasturtium?
Time nasturtium to your own season rather than the calendar. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
What soil does Nasturtium need?
Specific pH data for nasturtium is pending. A soil test from your local Extension lab confirms what your site needs.
Does Nasturtium attract pollinators?
Yes — nasturtium's flowers are a solid nectar source for honeybees, native bees, butterflies, and hummingbirds. (Source: Pollinator Partnership.)