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.
Zones
Data not available
pH Range
5.5-6.5
Sun
Part Sun
Days to Maturity
90
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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 not available
USDA PHZM 2023
Soil pH
5.5 - 6.5
USDA PLANTS Database
Sun
Part Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Days to Maturity
90 days
plant_species_v5.csv
GDD Required
1200+
plant_species_v5.csv
Mature Height
1.5 ft
plant_species_v5.csv
Frost-Free Days
80+
plant_species_v5.csv
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 (USDA PLANTS 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.
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: Xerces Society, Pollinator Partnership.)
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.
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:
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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 (USDA PLANTS 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 (Xerces Society, 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 (ASPCA). Always supervise pets around new plantings.