New Guinea Impatiens 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, butterflies, and hummingbirds.
New Guinea Impatiens — the short answer
New Guinea Impatiens: part sun, pH 5.5–6.5, about 90 days to maturity.
- Soil pH
- 5.5–6.5
- Growable Ground Plant Database
- Sun
- Part Sun
- Growable Ground Plant Database
- Days to Maturity
- 90 days
- Growable Ground Plant Database
- 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.
Score New Guinea Impatiens on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether new guinea impatiens actually takes — and those shift from one yard to the next. Enter your address and we'll score new guinea impatiens against your land's real conditions.
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What New Guinea Impatiens is
New Guinea Impatiens grows as an annual and reaches around a foot and a half at maturity. It blooms from spring through fall. It's also deer-resistant and well suited to containers.
How to grow New Guinea Impatiens
New Guinea Impatiens does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5.5 to 6.5, on well-drained ground. It needs around 1,200 growing degree days to mature and a growing season of at least 80 frost-free days, which is why climate matters as much as soil.
USDA Zones
Data pending
Soil pH
5.5 - 6.5
Growable Ground Plant Database
Sun
Part 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
90 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
1.5 ft
Growable Ground plant catalog
Frost-Free Days
80+
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 new guinea impatiens in part sun with at least 4 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
New Guinea Impatiens prefers pH 5.5 to 6.5 (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 new guinea impatiens blooms in the cool of the morning, just as they open, for the longest display.
Where New Guinea Impatiens thrives
Whether new guinea impatiens 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 New Guinea Impatiens
Growing guides for new guinea impatiens
In rotation planning, new guinea impatiens 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 — new guinea impatiens isn't known to be toxic to dogs or cats. (Source: ASPCA.)
New Guinea Impatiens offers moderate value to bees and other pollinators. (Source: Pollinator Partnership.)
Your land is one point inside New Guinea Impatiens'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 New Guinea Impatiens will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether new guinea impatiens 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 New Guinea Impatiens
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 New Guinea Impatiens in my zone?
Zone data for new guinea impatiens is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant New Guinea Impatiens?
Most growers plant new guinea impatiens after the last spring frost, once the soil has warmed, leaving enough of the season for its 80-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 New Guinea Impatiens need?
New Guinea Impatiens 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 New Guinea Impatiens need?
New Guinea Impatiens prefers soil pH 5.5 to 6.5, on well-drained ground (Growable Ground Plant Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does New Guinea Impatiens attract pollinators?
Yes — new guinea impatiens's flowers are a solid nectar source for honeybees, native bees, butterflies, and hummingbirds. (Source: Pollinator Partnership.)
Is New Guinea Impatiens safe for pets?
New Guinea Impatiens is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)