Photo by Melody

PlantFiles: Nasturtium
Tropaeolum majus 'Cobra'

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Family: Tropaeolaceae
Genus: Tropaeolum (tro-PEE-oh-lum) (Info)
Species: majus (MAY-jus) (Info)
Cultivar: Cobra

Category:
Annuals
Herbs
Tropicals and Tender Perennials

Height:
24-36 in. (60-90 cm)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
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

Danger:
N/A

Bloom Color:
Scarlet (Dark Red)

Bloom Time:
Blooms all year

Foliage:
Herbaceous
Dark/Black

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)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

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

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

By dicentra63
Thumbnail #1 of Tropaeolum majus by dicentra63

By dicentra63
Thumbnail #2 of Tropaeolum majus by dicentra63

Profile:

1 positive
No neutrals
1 negative

Gardeners' Notes:

RatingAuthorContent
Positive jccravey On May 8, 2011, jccravey from Lawtey, FL wrote:

Had about average germination for nasturtiums (>50%). Plants are doing well. Blooms are beautiful against blackish leaves.

Negative dicentra63 On Oct 23, 2010, dicentra63 from West Valley City, UT (Zone 6b) wrote:

As many noted in the Products and Sources forum for Thompson and Morgan, the germination rate for "Cobra" is abysmal. I planted 15-21 seeds in part-shade hanging baskets and got three germinations.

Furthermore, the foliage was pale green and sickly (possibly didn't get enough sun) and not at all like the magnificent specimen in the photo.

http://www.tmseeds.com/images/uploads/2304_2311_large.jpg

Regional...

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

Fernandina Beach, Florida



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