Photo by Melody

PlantFiles: Hardy Gloxinia
Incarvillea delavayi

Family: Bignoniaceae (big-no-nih-AY-see-ee) (Info)
Genus: Incarvillea (in-kar-VIL-ee-uh) (Info)
Species: delavayi (del-uh-VAY-ee) (Info)

4 vendors have this plant for sale.

13 members have or want this plant for trade.


18-24 in. (45-60 cm)

12-15 in. (30-38 cm)

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)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer

Grown for foliage

Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
This plant is suitable for growing indoors
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Flowers are good for cutting
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Seed does not store well; sow as soon as possible

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No positives
5 neutrals
1 negative

Gardeners' Notes:

Negative braun06 On Sep 7, 2010, braun06 from Peoria Heights, IL (Zone 5b) wrote:

I planted this from some roots I bought at the store and they flowered however they never looked good through the whole growing season. I wound up yanking them and they hardly rooted which is fine to me since I didn't like the plant to begin with.

Neutral holeth On Jan 11, 2010, holeth from Corpus Christi, TX (Zone 9a) wrote:

Opened the Sunday paper this week. A popular corporate bulb company is adding a common name to this plant. They're marketing it under the name "Flowering Fern."

Found scientific/botanical name in tiny italic print on bottom of online catalog listing - not mentioned in general publicity. (01/11/2010)

Neutral PurplePansies On Sep 23, 2004, PurplePansies from Deal, NJ (Zone 7a) wrote:

Very easy from seed..... fast and complete germination.... now I just have to wait for the plants to grow up!!!! :)

Neutral Sis On Aug 31, 2001, Sis wrote:

No serious pests or diseases.

Neutral Deanne On Aug 1, 2001, Deanne from Franktown, CO (Zone 5a) wrote:

Seeds need no pretreatment but need light to germinate. Do NOT cover. Takes about 14 days to germinate with soil temp at 60-65 degrees F.

Neutral Terry On Mar 14, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

Height: 18-24"
Spacing: 12-15"
Hardiness: Zones 6-10
Light: Sun to light shade
Pronunciation: in-kar-VIL-ee-a

Not related to gloxinias, but rather to the Campsis and Bignonia family (trumpet vines), a showy perennial from high elevations in India, Tibet and China. Carrot-like roots are available from bulb-growers in autumn. Beautiful pink blooms appear in early summer.

'Snowtop', a white-flowering variety is also available.


This plant has been said to grow in the following regions:

Calistoga, California
Miami, Florida
Wellborn, Florida
Chicago, Illinois
Bellaire, Michigan
Florence, Mississippi
Mayview, Missouri
Tuckerton, New Jersey
Hannibal, New York
Glouster, Ohio
Walterville, Oregon
Verona, Pennsylvania
Conway, South Carolina
Leesburg, Virginia
Kalama, Washington

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