Banana pepper
Capsicum annuum 'Sweet Banana'. Family Solanaceae. Annual.
Also called Sweet Banana pepper, Sweet banana chilli.
Capsicum annuum 'Sweet Banana' is a frost-tender pepper grown as an annual for its long, tapered, usually mild fruits. The peppers start pale yellow and ripen through orange to red; gardeners grow them for salads, cooking and pickling. It needs a warm summer and often crops more reliably under cover in cool parts of the United Kingdom and Canada.



At a glance
- Sun
- Full sun, ideally at least 6-8 hours daily; light afternoon shade can help in very hot Australian and southern US gardens.
- Water
- Keep the root zone evenly moist but not waterlogged. Water deeply when the surface begins to dry, checking containers daily in hot weather.
- Soil
- Fertile, well-drained soil enriched with compost, ideally pH 6.0-7.0.
- Height
- 1.5-2.5 ft (0.45-0.75 m)
- Spread
- 1-1.5 ft (0.3-0.45 m)
- Flowers
- Small white flowers from late spring or summer until cold weather.
- Foliage
- Smooth, pointed, medium- to dark-green leaves on branching stems.
- Growth
- Fast in warm weather; slow in cool soil.
- Care needed
- Medium
The year at a glance
- Pollinators
- Low allergen
- Edible
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flowers | ||||||||||||
| Fruit | ||||||||||||
| Plant |
Northern hemisphere months. In Australia, shift them by six.
- Difficulty
- Moderate
- Toughness
- Fairly tough
Will it suit your garden?
Pick your zone, country, light and whether you have pets.
Full sun is 6 or more hours of direct sun a day, part shade 3 to 6 hours, shade under 3.
How it grows
Planting day
0.5 ft (0.15 m)
After 1 year
2 ft (0.6 m)
full size
Full size in one season.
From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.
Good to know
- Cats and dogs
- Safe
- Native to
- the US
- Growth rate
- Moderate
Care
Jobs through the year
- WaterMay, Sep–Oct, every 7 days
- For established plants in the ground, water when surface soil dries; adjust for rain and water new transplants more often.
- WaterJun–Aug, every 4 days
- Water established plants deeply at soil level, adjusting for rain and heat to maintain even moisture.
- FeedJun–Sep, every 28 days
- Once fruit sets, feed lightly if soil fertility is low, using vegetable fertiliser at its label rate.
- MulchJun
- Mulch warmed, moist soil, leaving a gap around the stem.
- ProtectJun–Jul
- Add a short stake or cage before heavy fruit makes branches lean.
- HarvestJul–Oct
- Snip firm pale-yellow peppers at 15–18 cm long, or leave some to ripen red; pick before frost.
- Plant outside after frost danger has passed, when nights are consistently above 12°C (54°F) and the soil has warmed.
- Space plants 1-1.5 ft (0.3-0.45 m) apart, or grow one plant in a container holding at least 15-20 litres.
- Water at soil level and avoid repeated drying out, especially during flowering and fruit development.
- Feed container plants with a balanced tomato or vegetable fertiliser at the label rate once fruit begins to set; avoid excessive nitrogen.
- Mulch after the soil warms, leaving a small gap around the stem.
- Use a short stake or small cage if fruit-laden branches begin to lean.
Pruning. Routine pruning is unnecessary; remove damaged or diseased growth with clean scissors. Near the end of the warm season, remove new flowers if you want the plant to concentrate on existing fruit.
Harvest
Pick firm, glossy, pale-yellow peppers when they are about 6-7 in (15-18 cm) long, often around 60-75 days after transplanting in warm conditions. Leave some to turn orange or red for a sweeter flavour, and cut each fruit off with scissors or secateurs rather than pulling it.
Through the year
- Late winter
- Sow indoors 8-10 weeks before your expected outdoor planting date; provide bright light and germination warmth around 24-29°C (75-84°F).
- Spring
- Pot seedlings on when their roots fill the starter pots, keeping them warm and in strong light.
- Late spring
- Harden plants off gradually, then plant outside after frost danger has passed and nights are warm.
- Early summer
- Mulch warm soil, add supports and begin regular checks for aphids.
- Summer
- Water consistently, feed container plants and harvest regularly as peppers reach usable size.
- Autumn
- Pick remaining usable fruit before frost; remove spent plants and discard diseased material.
In the garden
- Plant in orderly rows in a potager, where pale-yellow fruits stand out against green foliage.
- Grow in large patio containers beside basil and parsley for convenient kitchen harvesting.
- Use in raised vegetable beds with low-growing lettuce around the edges, keeping the pepper's base uncrowded.
- Mix with compact marigolds in an edible border for contrasting flower and fruit colour.
Garden styles it suits: Potager (kitchen garden), Edible landscape, Homestead, Small-space, Modern courtyard and Family-friendly.
Plant it with: Basil, Parsley, Lettuce, French marigold and Sweet alyssum.
Wildlife: Flowers attract some bees, although peppers are self-fertile. Birds and small mammals may occasionally damage ripe fruit.
Problems to watch for
- Aphids distort young shoots: wash small colonies off with water; use insecticidal soap labelled for edible crops if needed.
- Red spider mites cause fine stippling and webbing, especially under cover: inspect leaf undersides, avoid drought stress and use suitable biological controls or labelled treatments.
- Blossom-end rot causes a dark, sunken patch at the fruit tip: keep watering consistent and avoid root damage; calcium supplements are not a routine cure.
- Poor fruit set occurs in cold weather or extreme heat: wait for milder conditions, ventilate greenhouses and provide light shade during severe heat.
Safety
The sweet fruits are edible and are not known to be toxic to people, cats, dogs or horses in ordinary food amounts, although large amounts may upset an animal's stomach. Leaves and stems are not food; their safety for pets and horses is less well established, so prevent chewing. Unexpectedly hot fruit can irritate the mouth, eyes and skin.
Easily confused with
Hungarian wax pepper (Capsicum annuum, Hungarian wax types)
Its pale-yellow, tapered fruits can look almost identical but are often much hotter. Appearance alone is unreliable; check the seed packet or plant label.
Cubanelle pepper (Capsicum annuum, Cubanelle types)
Fruits are generally broader, more irregular and more noticeably lobed or wrinkled than the slender, relatively smooth fruits of 'Sweet Banana'.
The name
The name 'Sweet Banana' refers to the fruit's mild flavour and its pale-yellow colour and curved, banana-like shape.
Propagation. Sow seed indoors with warmth in late winter or early spring. Seed saved from fully ripe red fruit may not come true if nearby pepper varieties cross-pollinated; buy seed labelled 'Sweet Banana' for dependable results.
Checked against open data
- Accepted botanical name
- Capsicum annuum
- In the US and Canada
- Native in the lower 48 states. Introduced in Hawaii, the lower 48 states, Navassa Island, Pacific Basin, Puerto Rico and US Virgin Islands.
- Native range
- Guatemala, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Bahamas, Belize, Bolivia, Brazil North and Brazil Northeast.
- Measured
- Average height 60 cm.
Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.
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