65-75days to harvest
5-10days to germinate
Z2–11USDA zones
Easydifficulty
HeirloomContainer friendly

Sowing

Start indoors 6-8 weeks before last frost or direct sow after soil reaches 60°F. Transplant after all danger of frost passes.

Cultivation

Sun
Full sun (6+ hours)
Water
Moderate — regular watering
Soil
Rich, well-drained soil with organic matter
Soil pH
6.0-7.0
Spacing
12-15 inches
Height
1-10 feet
Season
Warm season annual

Appearance & flavour

Colour
Dark green leaves with purple undersides and dark purple-bronze stems
Size
4-6"
Shape
Compact bushy plant with oval leaves and purple stems
Flavour
Sweet basil with distinct chocolate, cinnamon, and warm spice notes

In the kitchen

Chocolate desserts, fruit salads, specialty pestos, cocktail garnish, ice cream infusions, mole sauces

Pests, disease & resistance

Pests
Aphids, spider mites, Japanese beetles
Diseases
Fusarium wilt, downy mildew, bacterial leaf spot
Resistance
Good resistance to common basil diseases

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
2April – MayJune – August—August – September
3April – MayJune – July—July – October
4March – AprilJune – July—July – October
5March – AprilMay – June—June – October
6March – AprilMay – June—June – November
7February – MarchApril – June—June – November
8February – MarchApril – May—May – December
9January – FebruaryMarch – April—April – December
10JanuaryFebruary – April—April – December
11JanuaryJanuary – March—March – December

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

TomatoesBasil repels tomato hornworms and aphids, may enhance tomato flavor
PeppersBasil deters aphids, spider mites, and thrips that commonly attack peppers
OreganoBoth herbs have similar growing requirements and repel similar pests
LettuceBasil provides light shade for lettuce and repels aphids and slugs
MarigoldsBoth repel nematodes and aphids, creating a strong pest deterrent combination
ParsleyCompatible growth habits and both attract beneficial insects like hoverflies
CarrotsBasil helps repel carrot flies while carrots don't compete for nutrients
AsparagusBasil repels asparagus beetles and both have non-competing root systems

Avoid

SageBoth compete for similar nutrients and sage may inhibit basil's growth
RueAllelopathic plant that inhibits growth of basil and most herbs
FennelInhibits growth of most garden plants including basil through allelopathy

Nutrition (per 100 g)

Calories (per 100 g)
23
Protein (g)
3.15
Fat (g)
0.64
Carbohydrate (g)
2.65
Fibre (g)
1.6
Sugars (g)
0.3
Vitamin A (µg)
264
Vitamin C (mg)
18
Vitamin E (mg)
0.8
Vitamin K (µg)
415
Vitamin B6 (mg)
0.155
Folate (µg)
68
Calcium (mg)
177
Iron (mg)
3.17
Magnesium (mg)
64
Phosphorus (mg)
56
Potassium (mg)
295
Zinc (mg)
0.81
Selenium (µg)
0.3

Where to buy seed and equipment

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Growing it? There is a full cultivation guide at the herbs 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 Chocolate Basil?

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

Similar varieties

Other herbs with a comparable time to harvest, so a season that suits Chocolate Basil suits these too.

Browse all 104 herbs