Dwarf Hardy Gloxinia

Incarvilleamairei

Family
Bignoniaceae (big-no-nih-AY-see-ee)
Genus
Incarvillea (in-kar-VIL-ee-uh)
Species
mairei (MAIR-ay)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Smooth
Height
12-18 in. (30-45 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Bloom Color
Magenta (pink-purple)
Bloom Time
Late Spring/Early Summer
Other Details
Category
Alpines and Rock Gardens
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional

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Gardener's Notes:

1
positive
2
neutrals
0
negative
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A
Calgary, AB (Zone 3b) | May 2015 | neutral

Hardy and long-lived in zone 3.

H
Rawdon, QC (Zone 4a) | June 2004 | neutral

Took 3 years from seeding to bloom in my Rawdon, Quebec garden.

T
St. John's, NL (Zone 5b) | February 2004 | positive

Knockout floral display! This hardy gloxinia is more compact than I. delavayi, as well as a bit hardier. Not so common in the trade but...Read More

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