Torenia 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 modest draw for honeybees and native bees.
Zones
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pH Range
5.5-7
Sun
Part Sun
Days to Maturity
65
Score Torenia on your exact land.
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What Torenia is
Torenia 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 Torenia
Torenia does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5.5 to 7, on well-drained ground. It needs around 1,300 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 - 7
USDA PLANTS Database
Sun
Part Sun
Growable Ground plant catalog
Drainage
well (dry spells)
Growable Ground plant catalog
Days to Maturity
65 days
Growable Ground plant catalog
GDD Required
1300+
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
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 torenia in part sun with at least 4 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Torenia prefers pH 5.5 to 7 (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 torenia blooms in the cool of the morning, just as they open, for the longest display.
Good to know
Good news for pet owners — torenia isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Torenia offers low value to bees and other pollinators.
Where Torenia thrives
Whether torenia 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 Torenia will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether torenia 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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Frequently Asked Questions
Can I grow Torenia in my zone?
Zone data for torenia is being finalized. A Growable Ground report checks your parcel's full suitability against federal soil, climate, and zone data.
When should you plant Torenia?
Most growers plant torenia 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 Torenia need?
Torenia 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 Torenia need?
Torenia prefers soil pH 5.5 to 7, on well-drained ground (Growable Ground Plant Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Torenia attract pollinators?
Yes — torenia's flowers are a modest nectar source for honeybees and native bees.
Is Torenia safe for pets?
Torenia is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)