Photo by Melody

PlantFiles: Eranthemum, Blue Sage
Eranthemum pulchellum

Family: Acanthaceae (ah-kanth-AY-see-ee) (Info)
Genus: Eranthemum (er-RANTH-ee-mum) (Info)
Species: pulchellum (pul-KEL-um) (Info)

Synonym:Eranthemum nervosum

One vendor has this plant for sale.

11 members have or want this plant for trade.

Tropicals and Tender Perennials

4-6 ft. (1.2-1.8 m)

24-36 in. (60-90 cm)

USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Light Shade
Partial to Full Shade
Full Shade

Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Late Winter/Early Spring
Mid Winter


Other details:
This plant is attractive to bees, butterflies and/or birds
Provides winter interest
Suitable for growing in containers

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
From softwood cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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4 positives
No neutrals
No negatives

Gardeners' Notes:

Positive bjstock On Aug 26, 2013, bjstock from Orlando, FL (Zone 9b) wrote:

In south Orlando (Disney area), it grows to 5-6 feet on shady side of house. It has beautiful dark green leaves year-round and blooms prolifically in January-February with beautifully blue flowers. Needs trimming at least twice a year here, but cuttings root easily and with no effort. Zone 9B.

Positive brical1 On Jul 26, 2007, brical1 from Inland S.E QLD
Australia wrote:

Have had this growing in my garden for many years in a sheltered position.It flowers here in late August/September which is late winter early spring here in Australia.Sets plenty of seed and regularly self sows.A beautiful shade of blue.Protect from frost.

Positive JaxFlaGardener On Jun 28, 2007, JaxFlaGardener from Jacksonville, FL (Zone 8b) wrote:

This plant grows at the Jacksonville (Florida) Zoo & Gardens, which is on the borderline of Zone 8b/9a. The plant is in a concrete planter with a high roof overhang so that it gets some protection, where it survived winter temperatures of 28 F this past winter, so it may be more hardy than is reported in most information about the plant. The nearly true blue flowers make a nice show. I'm attempting to root some softwood cuttings of the plant.

Edited to update on 11/22/07: The plant roots easily from pruned cuttings without rooting hormone.


Positive dogbane On Nov 19, 2003, dogbane from New Orleans, LA (Zone 9a) wrote:

This sub-shrub, a native of India, is quite happy in bright shade. It likes rich, loose, humusy soil and prefers to not dry out.

The foliage tends to be sparse, so planting it against a heavy foliage background is advisable. I've seen it in mixed plantings with Swamp sunflowers (Helianthus angustifolius) with dramatic results. Eranthemum flowers are electric blue so against the sunflowers the effect was powerful.

Nice plant to add interest to the late fall garden. Often not noticed when not in bloom.

Spreads by roots, but not agressive. Propagation is by greenwood cuttings.


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

Carlsbad, California
Los Angeles, California
Sacramento, California
Brooksville, Florida
Cape Coral, Florida
Deland, Florida
Hollywood, Florida
Homestead, Florida
Jacksonville, Florida
Odessa, Florida
Orlando, Florida
Pompano Beach, Florida
Port Saint Lucie, Florida
Riverview, Florida
Rockledge, Florida
Saint Petersburg, Florida
Sebring, Florida
Tampa, Florida
Zachary, Louisiana
Houston, Texas (2 reports)

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