Beans
55days to harvest
7-14 daysdays to germinate
Z2–11USDA zones
Easydifficulty
Heirloom

Sowing

Direct sow after last frost when soil temperature reaches 60-70°F

Cultivation

Sun
Full sun (6+ hours)
Water
Regular, consistent moisture during growing season
Soil
Well-drained loam with moderate fertility
Spacing
4-6 inches
Height
6-8 feet
Season
Warm season annual

Appearance & flavour

Colour
Medium green
Size
6-7"
Shape
Straight pods
Flavour
Sweet, tender pods with mild bean flavor; best harvested young at 6-7 inches.

In the kitchen

Fresh eating, steaming, sautéing, stir-frying, light cooking

Pests, disease & resistance

Pests
Bean beetles, spider mites, aphids
Diseases
Bean rust, anthracnose, powdery mildew

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1——July – AugustSeptember – August
2——June – AugustSeptember
3——June – JulyAugust – October
4——June – JulyAugust – October
5——May – JuneAugust – September
6——May – JuneJuly – September
7——April – JuneJuly – August
8——April – MayJune – August
9——March – AprilMay – July
10——February – AprilMay – June
11——January – MarchApril – May
12——January – MarchApril – May
13——January – MarchApril – May

Companion planting

8 beneficial pairings indexed for this variety, 4 to avoid.

MarigoldRepels bean beetles, aphids, and nematodes while attracting beneficial insects
CornProvides natural support structure for climbing beans in Three Sisters planting
SquashGround cover reduces weeds and retains soil moisture for bean roots
CarrotsLoose soil from carrot growth improves bean root development and nitrogen fixation
NasturtiumActs as trap crop for aphids and cucumber beetles, protecting bean plants
RadishBreaks up compacted soil and deters bean root fly with its pungent roots
CatnipRepels bean weevils, aphids, and flea beetles through natural compounds
Summer SavoryImproves bean flavor and growth while repelling bean beetles

Avoid

OnionInhibits bean growth and nitrogen fixation through allelopathic compounds
GarlicStunts bean development and interferes with beneficial rhizobia bacteria
FennelReleases allelopathic chemicals that inhibit bean germination and growth
SunflowerCompetes heavily for nutrients and water while releasing growth-inhibiting chemicals

Nutrition (per 100 g)

Protein (g)
1.97
Fat (g)
0.275
Carbohydrate (g)
7.41
Fibre (g)
3.01
Vitamin K (µg)
43.9
Vitamin B6 (mg)
0.121
Calcium (mg)
40
Iron (mg)
0.652
Magnesium (mg)
28.2
Phosphorus (mg)
41.2
Potassium (mg)
290
Zinc (mg)
0.35

Where to buy seed and equipment

Some links are affiliate links. If you buy through them we may earn a commission at no extra cost to you.

Growing it? There is a full cultivation guide at the beans growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

DarkGrow forum

Grown Cobra?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other beans with a comparable time to harvest, so a season that suits Cobra suits these too.

Browse all 84 beans