Sow seeds 0.5 cm (1/4 in) deep in a light, clean mix kept gently moist. Maintain 26 to 30°C (79 to 86°F) until emergence, which generally takes 14 to 35 days, occasionally longer. Move seedlings under bright light as soon as they emerge so they remain compact and sturdy. Water carefully at soil level when the surface begins to dry, without leaving the mix waterlogged. Pot seedlings on after true leaves develop and rotate containers regularly for even growth. Gentle air movement also helps strengthen stems. Because every growing space behaves differently, watch moisture, temperature and seedling vigour rather than watering on a fixed schedule. Healthy roots, steady light and moderate moisture provide the best start before plants are hardened off for outdoor conditions.
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Experimental superhot pepper
Solanaceae
Fruit vegetable seeds
RB003 hot pepper (Capsicum chinense ‘RB003’)
Capsicum chinense
RB003 hot pepper (Capsicum chinense ‘RB003’) is a distinctive edible variety for full sun and fertile, well-drained soil after a warm indoor start. Plants benefit from consistent watering, good air circulation and support once branches become heavily loaded. Harvest fruit after it develops its characteristic colour and texture, then enjoy it for superhot sauces, ferments, highly concentrated powders and flakes. This variety can also grow successfully in a large, well-drained container. Regular picking encourages continued production through the season. Adjust care gradually as seasonal conditions change. Adjust watering to the weather and the plant’s visible vigour. Check leaf undersides regularly so pests can be noticed and managed early.
Quantity
Approximately 10 seeds
Exposure
Full sun
Difficulty level
Moderate
Discover the plant
Family
Solanaceae
Genus
Capsicum
Species
chinense
Cultivar
RB003
Type
Experimental superhot pepper
Cycle
Annual in Quebec
RB003 hot pepper (Capsicum chinense ‘RB003’) is an edible variety selected for its distinctive harvest and garden appeal. It suits gardeners looking for a productive, colourful crop that is easy to enjoy in seasonal meals. Flavour, colour and heat can change with maturity, sunlight and growing conditions. Pick fruit after it develops its characteristic ripe colour and a texture suited to the intended use. A homegrown crop makes it possible to taste the variety fresh, choose the preferred picking stage and gather manageable amounts throughout the season. It also brings seasonal interest.
Start seed indoors in a light mix, 0.5 cm (1/4 in) deep, and maintain 26 to 30°C (79 to 86°F) until emergence. Give seedlings bright light promptly and water without saturating the mix. After the last frost, harden plants gradually before setting them in full sun and fertile, loose, well-drained soil. Follow the recommended spacing so air can move through the foliage. Water deeply at soil level when the surface begins to dry. Light mulch helps moderate moisture changes, while a stake or cage can support heavily loaded branches. Check young plants regularly during establishment.
Pick ripe fruit regularly to keep plants productive. The harvest is well suited to superhot sauces, ferments, highly concentrated powders and flakes. With hot varieties, begin with a tiny amount and wear gloves whenever intensity is high. Sound fruit stores best when harvested dry and handled without bruising. For container culture, choose a large pot with good drainage, monitor watering more frequently and feed moderately. Before an expected frost, gather remaining usable fruit. Sort the harvest and use fruit with a small mark or more delicate skin first. Refrigerate or process the harvest promptly.
Planting guide
From planting to establishment.
Planting depth
0.5 cm (1/4 in)
Spacing / density
Space plants 60 to 80 cm (24 to 31 in) apart and provide sturdy support.
Establishment temperature
26 to 30°C (79 to 86°F)
Establishment time
14 to 35 days, occasionally longer
Best planting time
Transplant after all frost danger has passed, once the soil is warm and nights remain above approximately 12°C.
Propagation
Seed
Growing method
Sow RB003 indoors ten to twelve weeks before the final frost, generally from February through March in Canada. Place seed 0.5 to 1 cm deep in fine, moist, well-aerated mix. Maintain 26 to 30°C with a controlled heat mat; cover to retain humidity and ventilate daily. Emergence commonly requires fourteen to thirty-five days and may be uneven. As soon as seedlings appear, remove the cover and provide intense light for fourteen to sixteen hours each day. Pot seedlings individually after their first true leaves develop, then move them on before roots circle the container. Feed lightly, water when the surface begins to dry and maintain gentle air circulation. Harden plants for seven to ten days. Transplant into full sun only after frost danger has passed and nights remain above 12°C. Space plants 60 to 80 cm apart in warm, fertile, well-drained soil. Install support, water at ground level, mulch after the soil warms and protect plants during unexpectedly cool nights. A greenhouse or warm wall can help the long-season fruit reach full bright red maturity. Inspect leaf undersides weekly and isolate any plant carrying pests before returning it to the main seedling group.
Soil and care
The right conditions.
Exposure
Full sun
Soil pH
6.0 to 6.8
Minimum temperature
0°C; highly frost-sensitive plant
Watering
Water deeply at soil level when the upper few centimetres begin to dry. Maintain even moisture during flowering and fruit enlargement because alternating drought and excess water stresses the plant. Avoid unnecessarily wetting foliage and never allow a container to stand in water.
Soil type
Loose, fertile, organic-rich yet very well-drained soil supports rooting and fruit production. A loamy texture that holds even moisture without remaining saturated is ideal. Incorporate mature compost before planting and avoid compacted, cold or continually waterlogged ground.
Fertilization
Incorporate mature compost before planting. After establishment, apply a balanced or fruiting-vegetable fertilizer according to its label without excessive nitrogen. Light, regular container feeding supports flowering; reduce fertilizer if foliage becomes lush at the expense of flowers and fruit.
Seasonal care
In late winter, prepare a warm, brightly lit area before sowing RB003 because its development is slower than that of many Capsicum annuum peppers. Maintain medium warmth through emergence, then reduce temperature slightly while strengthening light and air circulation. During spring, pot plants on as needed, feed lightly and rotate them for upright growth. Begin hardening only on mild days and bring plants inside whenever wind or temperature becomes unfavourable. After transplanting, water deeply, wait for soil to warm before mulching and install support. In summer, maintain even moisture without saturation, fertilize moderately and inspect for aphids, whiteflies, spider mites, leaf spots and flower drop. Excessive heat combined with very dry air may also reduce fruit set. In late summer, discontinue high-nitrogen feeding, harvest bright red fruit progressively and provide temporary protection during cool nights. Before frost, pick formed fruit even if it must finish colouring under cover. Wear gloves for every handling task, discard diseased plants, clean containers and store dried fruit separately in clearly identified packages. Wash dedicated tools before returning them to general kitchen or garden use. Record flowering and ripening dates to adjust the next sowing. Save seed only from healthy, fully mature fruit, and isolate flowers from cross-pollination when varietal fidelity matters. Review labels before storage so no pale pod can later be mistaken for a mild pepper.
Container growing
A controlled environment.
Recommended pot size
Minimum 20 litres; 25 to 30 litres preferred for the vigorous plant.
Container growing helps provide RB003 with the warmth it needs in short-summer regions. Choose a stable pot holding at least 20 litres, ideally 25 to 30 litres, with numerous drainage holes. Fill it with rich vegetable potting mix amended with drainage material and a modest amount of mature compost. Transplant only one plant per container and install sturdy support immediately. Place the pot in full sun beside a heat-retaining wall while sheltering it from strong wind. Water deeply when the upper few centimetres dry, and never leave water standing in the saucer. Apply balanced fertilizer early, then use a lower-nitrogen fruiting formula once buds appear. Check moisture daily during heat waves because containers dry quickly. Rotate the pot for balanced light and inspect for aphids, whiteflies and spider mites. Before cold nights, move it under temporary cover to extend ripening, but do not consider the plant hardy. Keep fruit and harvesting equipment beyond the reach of children and wear gloves whenever mature pods are handled. A thermometer beside the container helps identify nights that are too cold. Move the plant before growth stalls, but return it promptly to strong outdoor light when warmth resumes.
Bloom and dimensions
The complete profile.
Flower color
White
Foliage color
Medium green
Foliage type
Deciduous; grown as an annual
Growth rate
Fast
Bloom period
Small white summer flowers; steady warmth and even moisture support fruit set.
Fruiting
Deeply wrinkled, bumpy, contorted red fruit, sometimes ending in a stinger, with superhot intensity.
Harvest
Harvest approximately 100 to 120 days after transplanting when fruit is bright red, firm and fully coloured. Cut with pruners while wearing gloves and isolate the harvest.
Garden associations
What to plant with it.
Good companions
Basil, carrots, onions, parsley, lettuce and low-growing nectar-rich flowers.
Avoid planting with
Avoid fennel and shade from tall crops. Rotate after tomatoes, eggplants, potatoes and other Capsicum crops to limit shared pests and diseases.
Superhot sauces, ferments, highly concentrated powders and flakes, always in minute quantities with protection.
From the garden to inspiration.
For fermented RB003 sauce, work outdoors or in a very well-ventilated kitchen while wearing impermeable gloves and protective glasses. Place only one small piece of ripe pepper in a clean jar with 300 g white or yellow sweet pepper, 100 g onion and one garlic clove. Cover with 3% brine made from non-chlorinated water, keep vegetables submerged and ferment for five to seven days according to temperature. Blend with a little brine and 30 to 60 ml vinegar, then adjust texture without immediately adding more Ghost. Cook the sauce if required by your chosen storage method and refrigerate it in a container clearly labelled “extremely hot.” Taste only one drop diluted into food. Clean the blender, knife, board and work surfaces separately, and never serve the sauce without warning. Keep every ingredient and finished bottle away from children and pets. Dispose of gloves safely after preparation and wash reusable eye protection.
Frequently asked questions
Everything toknow.
Wait until all danger of frost has passed and nights remain consistently mild before transplanting. Harden plants for seven to ten days by gradually increasing their exposure to sun, wind and outdoor temperatures. Set them in full sun and fertile, well-drained soil, following the spacing recommended on the product page. Water thoroughly after planting and maintain even moisture while roots establish. A light mulch can reduce soil splash and slow moisture loss, but keep it away from the main stem. If unusually cold or windy weather is forecast, protect young plants temporarily. They establish more readily in warm soil, so delaying planting slightly is usually better than exposing tender growth to cold conditions that can stall development.
Yes. Choose a large container with several drainage holes and fill it with a rich yet airy potting mix. Place it in full sun and provide a stake or cage if the plant becomes tall or heavily loaded with fruit. Containers dry faster than garden beds, so check moisture regularly and water deeply when the upper layer feels dry. Do not leave the pot standing in water. Moderate, regular feeding is preferable to one very concentrated application. Regular harvesting also encourages the plant to continue producing. Check moisture daily during very hot or windy periods, and shelter the pot from drying winds.
Heat can vary from one fruit to another with genetics, maturity and growing conditions. Published Scoville figures for a variety are therefore a general guide, not a guaranteed intensity for every harvest. Begin with a very small amount, especially with peppers known to be extremely hot, and increase seasoning gradually. Wear gloves when handling very hot fruit, avoid touching your face and clean knives, boards and work surfaces carefully. Removing inner membranes may reduce some of the perceived heat, but it will not make a hot pepper mild. Clearly label prepared foods and keep fresh fruit, powders and sauces away from children and pets.
Seed can be saved when the product is not an F1 hybrid, although the next generation may vary if flowers received pollen from another compatible variety. Choose healthy, well-shaped fruit that has reached full maturity. Remove and clean the seed as appropriate for the crop, then let it dry completely away from direct sunlight. Store it in a clearly labelled envelope in cool, dry and dark conditions. For offspring that more closely resemble the parent, isolate flowers or separate compatible varieties. If the packet identifies the variety as F1, or if hybrid status is uncertain, purchasing fresh seed is the more dependable way to obtain the expected plant and fruit characteristics next season.
Its strengths, naturally.
Attracts or supports pollinating insects
Pollinators
