Peppers
70-80days to harvest
10-21days to germinate
Z4–11USDA zones
Easydifficulty
HeirloomContainer friendly

Sowing

Start seeds indoors 8-10 weeks before last frost date. Transplant when nighttime temperatures consistently stay above 55°F.

Cultivation

Sun
Full sun (6+ hours)
Water
1 inch per week, allow slight drying between waterings
Soil
Well-drained sandy loam with good organic content
Soil pH
6.2-7.0
Spacing
12-18 inches
Height
1-3 feet
Season
Warm season

Appearance & flavour

Colour
Deep purple turning to red at full maturity
Size
2-3 inches long, 1 inch wide
Shape
Traditional jalapeño shape, tapered with rounded end
Flavour
Medium heat (2,500-8,000 SHU), bright and tangy with classic jalapeño flavor

In the kitchen

Fresh salsas, pickling, stuffing, grilling, garnish for visual impact in any jalapeño recipe

Pests, disease & resistance

Pests
Aphids, thrips, pepper maggot, flea beetles
Diseases
Bacterial leaf spot, pepper mottle virus, phytophthora blight
Resistance
Moderate resistance to common pepper diseases

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
2April – MayJune – July—September
3AprilJune – July—September – October
4March – AprilJune—August – October
5MarchMay – June—August – October
6MarchMay – June—August – October
7February – MarchApril – May—July – September
8FebruaryApril – May—July – September
9JanuaryMarch – April—June – August
10JanuaryFebruary – March—May – July
11JanuaryJanuary – February—April – June
12JanuaryJanuary – February—April – June
13JanuaryJanuary – February—April – June

Companion planting

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

MarigoldsRepel nematodes, aphids, and whiteflies with their strong scent
BasilRepels aphids, spider mites, and thrips while potentially enhancing pepper flavor
TomatoesShare similar growing conditions and can help deter each other's pests
OreganoNatural pest deterrent that repels aphids and spider mites
OnionsDeter aphids, thrips, and other soft-bodied insects that attack peppers
ParsleyAttracts beneficial insects like hoverflies that prey on pepper pests
CarrotsHelp break up soil around pepper roots and don't compete for nutrients
NasturtiumsAct as trap crop for aphids and cucumber beetles, drawing them away from peppers

Avoid

Black Walnut TreeReleases juglone toxin that stunts pepper growth and can kill plants
FennelProduces allelopathic compounds that inhibit pepper growth and development
BrassicasCompete for similar nutrients and may stunt pepper growth through root competition
Apricot TreesCan harbor diseases like verticillium wilt that easily spread to pepper plants

Nutrition (per 100 g)

Calories (per 100 g)
29
Protein (g)
0.91
Fat (g)
0.37
Carbohydrate (g)
6.5
Fibre (g)
2.8
Sugars (g)
4.12
Vitamin A (µg)
54
Vitamin C (mg)
119
Vitamin E (mg)
3.58
Vitamin K (µg)
18.5
Vitamin B6 (mg)
0.419
Folate (µg)
27
Calcium (mg)
12
Iron (mg)
0.25
Magnesium (mg)
15
Phosphorus (mg)
26
Potassium (mg)
248
Zinc (mg)
0.14
Selenium (µg)
0.4

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 peppers 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 Jalapeño 'Purple Jalapeño'?

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

Similar varieties

Other peppers with a comparable time to harvest, so a season that suits Jalapeño 'Purple Jalapeño' suits these too.

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