Fatalii / Fatali (Capsicum chinense) growing guide

Quick facts

Category: fruiting
Difficulty: intermediate
Days to harvest: 90 to 110 days
Harvest type: continuous production over weeks or months
Spacing: 60 cm between plants

Environment

Temperature: 21–32°C
pH: 5.8 to 6.8
EC (hydroponic): 2 to 3 mS/cm
Daily light: 22 to 32 mol/m²/day (strict, will fail outside this range)

Climate and zones

USDA zones: 9 to 13 (winter low around -7°C or warmer)
Frost tolerance: frost sensitive (dies at first frost)
Season: warm (summer crops, frost-sensitive)

Viable growing environments:

outdoor in growing season (annual)
unheated greenhouse / hoop house
heated greenhouse
indoor (heated home)
indoor hydroponics under grow lights

USDA zone bounds reflect outdoor year-round survival. Anywhere outside the bounded zone range, this crop still grows as an annual in the warm months (outdoor_seasonal), under cover (greenhouse), or indoors under lights.

Growing systems

Fatalii works in:

drip / Dutch buckets
media bed (ebb and flow)
soil bed

Growing media

The substrate the roots sit in. Choice depends on the system (clay pebbles don't fit NFT channels; rockwool isn't used in media beds) and the crop (fatalii works in the media listed below).

Medium	pH effect	Water retention	Bacterial surface
Expanded clay pebbles (LECA)	neutral / inert	low	high
Coco coir (Coconut coir)	slightly acidic	high	moderate
Perlite (Expanded volcanic glass)	neutral / inert	very low	low
Rockwool (Mineral wool)	alkaline until pre-soaked	very high	low
Soil-based mix (Potting soil)	varies by source	high	high

Bacterial surface area matters for aquaponics: clay pebbles, lava rock, and pumice double as biofilter substrate. Low-surface media (rockwool, perlite, pea gravel) work in hydroponics but need a separate biofilter in aquaponics.

Nutrient demand by stage

NPK ratios are relative weights at each growth stage; the nutrient mix calculator scales them to absolute grams or ml. EC targets shift through the plant's life: seedlings need a much lighter solution than fruiting adults.

Stage	N	P	K	EC target (mS/cm)
seedling	2	1	1	1.2
vegetative	3	1	2	2
flowering	1	2	3	2.4
fruiting	1	2	3	2.6

Companion-growing notes

Heavy uptake of potassium, calcium. Co-grown crops with the same demand will end up deficient even at "correct" EC. Plan around this in shared reservoirs.

Aquaponics suitability

Compatible with typical aquaponics nutrient profiles. Fish waste provides enough nitrogen for healthy growth; supplemental potassium, calcium, and iron may still be needed depending on fish stocking density.

Care notes

Culture is identical to other Capsicum chinense varieties (habanero, datil, Scotch bonnet). EC 2.0-3.0 mS/cm. pH 5.5-6.5. Temperature: 24–32°C (requires sustained warmth). High light (DLI 18-25 mol/m2/day). Plants are medium-sized (50–80 cm) and produce well in DWC, Dutch bucket, or drip systems. Long season: 90-120 days from transplant to ripe fruit. Hand-pollination improves fruit set indoors. Calcium supplementation during fruiting prevents blossom end rot. The bright yellow fruits are visually distinctive and dry to a deep gold. For hot sauce, the citrusy flavor profile pairs well with tropical fruits (mango, pineapple) and vinegar bases. A yellow fatalii hot sauce is both visually and gastronomically distinct from red-pepper-based sauces. Handle with gloves; the capsaicin concentration is high enough to cause skin irritation. Each plant produces 20-40 fruits under good conditions. Seeds are available from superhot pepper seed specialists. The plants are perennial in warm conditions. A top choice for hot sauce makers who want extreme heat combined with genuine flavor complexity.