Dwarf Blue Thunbergia, Natal Blue Bell

Thunbergia natalensis

Family: Acanthaceae (ah-kanth-AY-see-ee) (Info)
Genus: Thunbergia (thun-BER-jee-uh) (Info)
Species: natalensis (nuh-tal-EN-sis) (Info)

Category:

Tropicals and Tender Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

24-36 in. (60-90 cm)

Spacing:

24-36 in. (60-90 cm)

Hardiness:

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)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Medium Blue

Bloom Time:

Blooms repeatedly

Foliage:

Evergreen

Other details:

Unknown - Tell us

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:

Non-patented

Propagation Methods:

From woody stem cuttings

From softwood cuttings

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Regional

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

Stockton, California

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 5, 2006, PudgyMudpies from Stockton, CA (Zone 9a) wrote:

I bought this plant in the Fall of 2005 from Annies Annuals, it was in a 4 inch pot and was very small. I left it outside in a 1 gal clay pot, lined with a plastic grocery bag to prevent moisture loss, and watched it through the winter. I was afraid it had died but it only went dormant. Come Spring it started sprouting. I did not pinch it back because I wanted to see its natural growth habit, but I think next year I will. It gets very tall and lanky and I had to stake it up. It is the beginning of July and I am just getting flowers. I have it on the east side of my house under a shade cloth arbor, so it gets filtered sun until about 1pm. It gets very hot here but it does not seem to be bothered by it. No wilt or adverse effects. I would recommend this plant highly.

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