Peppers
85days to harvest
14-21 daysdays to germinate
Z4–11USDA zones
Moderatedifficulty
F1 hybrid

Sowing

Start indoors 8-10 weeks before last spring frost, ¼ inch deep; transplant outdoors after last frost when soil reaches 60-70°F

Cultivation

Sun
Full sun (6+ hours)
Water
Regular, consistent moisture—1-1.5 inches per week at soil level; inconsistent watering causes fruit cracking and blossom end rot
Soil
Well-draining loam enriched with compost or aged manure, slightly acidic to neutral (pH 6.0-7.0)
Spacing
18-24 inches
Height
1 ft. 0 in. - 3 ft. 8 in.
Season
Warm season annual

Appearance & flavour

Colour
Red at full maturity (green when harvested early)
Size
2 1/4"
Shape
Crown-shaped or bishop's hat form
Flavour
Moderately sweet with distinctive floral and citrus notes; subtle heat concentrated near the seed cavity

In the kitchen

Fresh eating, roasting, salads, gourmet garnishes, dried as paprika-like seasoning

Pests, disease & resistance

Pests
Spider mites, aphids, flea beetles, thrips
Diseases
Blossom end rot (calcium deficiency from inconsistent watering), phytophthora blight, pepper weevil

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
2April – MayJune – July—September
3AprilJune – July—September – October
4March – AprilJune—September – 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.

BasilRepels aphids, spider mites, and thrips while potentially improving pepper flavor
MarigoldsDeters nematodes, aphids, and whiteflies with natural compounds
TomatoesShare similar growing conditions and can help deter each other's pests
OreganoRepels aphids and provides ground cover to retain soil moisture
CarrotsDeep roots don't compete for space and help break up soil for pepper roots
OnionsDeter aphids, thrips, and other soft-bodied insects with sulfur compounds
ParsleyAttracts beneficial insects like hoverflies that prey on pepper pests
NasturtiumsAct as trap crop for aphids and cucumber beetles while attracting predatory insects

Avoid

Black Walnut TreesRelease juglone toxin that stunts pepper growth and can kill plants
FennelProduces allelopathic compounds that inhibit pepper growth and development
BrassicasCompete heavily for nutrients and can stunt pepper growth in close proximity
Apricot TreesCan harbor diseases like verticillium wilt that easily transfer to peppers

Nutrition (per 100 g)

Calories (per 100 g)
27
Protein (g)
1.66
Fat (g)
0.45
Carbohydrate (g)
5.35
Fibre (g)
3.4
Sugars (g)
1.95
Vitamin A (µg)
17
Vitamin C (mg)
82.7
Vitamin E (mg)
0.69
Vitamin K (µg)
9.5
Vitamin B6 (mg)
0.357
Folate (µg)
29
Calcium (mg)
14
Iron (mg)
0.46
Magnesium (mg)
17
Phosphorus (mg)
32
Potassium (mg)
256
Zinc (mg)
0.25
Selenium (µg)
0.3

Where to buy seed and equipment

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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 Mad Hatter?

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 Mad Hatter suits these too.

Browse all 73 peppers