Blue Nasturtium
Tropaeolum azureum

Family: Tropaeolaceae
Genus: Tropaeolum (tro-PEE-oh-lum) (Info)
Species: azureum (a-ZOOR-ee-um) (Info)

Category:

Alpines and Rock Gardens

Perennials

Tropicals and Tender Perennials

Vines and Climbers

Height:

6-8 ft. (1.8-2.4 m)

Spacing:

Unknown - Tell us

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:

Full Sun

Sun to Partial Shade

Light Shade

Danger:

N/A

Bloom Color:

Light Blue

Medium Blue

Dark Blue

Blue-Violet

Violet/Lavender

Purple

Bloom Time:

Late Spring/Early Summer

Foliage:

Grown for foliage

Herbaceous

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:

Non-patented

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; stratify if sowing indoors

Seed Collecting:

Bag seedheads to capture ripening seed

Properly cleaned, seed can be successfully stored

Regional

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

,

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Mar 18, 2010, Kim_M from Hamburg, PA (Zone 6b) wrote:

Relatively easy to germinate. This seed germinates at about 40 degrees temperature. And begins making a taproot/tuber fast.

Positive

On Dec 14, 2007, Ursula from Santiago
Chile (Zone 9b) wrote:

Tropaeolum azureum (Chilean endemic species) is a lovely climber with bright blue to deep purple flowers with a white center, produces a tuber (4cm diameter 1.5) and blooms from early to late spring. T. azureum reaches a height of approx. 1.5m (59)

Requires well-drained slightly humid soil, neutral pH, high luminosity and full sun. Also requires support to climb. Normally they will bloom the second year if grown from seeds (mine bloomed the first year!), although from the third year on they will have the most amazing flower-show.

Chilean native Tropaeolums require very deep pots if you do not want to plant them in the soil. They also like to have their tubers/roots in the shade (covered by other plants) and require a shrub or a trellis to climb on.
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