Why are my pepper flowers falling off?

This is often caused by extreme temperatures or lack of pollination.

When should I harvest?

Harvest when the fruit reaches your desired size and color.

Plant guide

Bell Pepper.

Capsicum annuum

Pronounced KAP-sih-kum AN-yoo-um

Also known as Bell Pepper, Bird Pepper, Capsicum, Chili, Green capsicum, Hot pepper, Paprika, Sweet pepper, Cayenne pepper, Chili Pepper, Chilli, Green Pepper

chili pepper — Photo by Oscar Alejandro Morales Juárez (CC BY-SA) via iNaturalist

Bell peppers are a favorite in home gardens for their crisp texture and sweet flavor. They thrive in warm weather and need plenty of sunshine to produce a good harvest. You will find them easy to grow if you provide consistent moisture and rich soil.

Another photo of Bell Pepper — Photo by Thomas Mesaglio (CC BY) via iNaturalist

At a glance

Care level: Easy
Plant type: Annual
Light: Full sun
Indoor light: Direct sun
Water: Every 2 to 4 days
Mature size: 60 to 90 cm
Growth rate: Medium
Hardiness: USDA 9 to 11
Bloom time: Early to mid summer

Care

Keep the soil evenly moist but not waterlogged to prevent blossom end rot. Watch for aphids on the undersides of leaves and ensure the plant gets enough heat to ripen the fruit. Support the heavy fruit with stakes to keep stems from snapping.

Watering: Water deeply whenever the top inch of soil feels dry.
Feeding: Use a balanced fertilizer once the plant begins to flower.
Pruning: Remove lower suckers to improve airflow and focus energy on fruit production.
Repotting: Usually grown as an annual, so repotting is rarely needed.
Soil: Well-draining, nutrient-rich loam
Soil pH: 6.0 to 6.8
Temperature: 15 to 35°C
Humidity: 40 to 60%
Drought tolerance: Moderate
Lifespan: Short lived perennial, typically 1 to 3 years.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Water running straight through the pot without soaking in.
Stunted growth despite regular feeding.

Safety

People: The plant is generally safe, but the fruit of hot varieties can cause intense burning sensations.
Children: Keep children away from hot pepper varieties to prevent accidental eye or mouth contact.
Contact allergens: Capsaicin in the fruit can cause skin irritation or dermatitis in sensitive individuals.
Airborne allergens: Pollen is generally not a significant allergen.
Edibility: Handle hot varieties with care as capsaicin can cause severe skin and eye irritation.

How to identify it

glossy, dark green foliage
blocky, multi-lobed fruit shape
star-shaped white flowers
sturdy, branching stems

Height: 0.3 to 1m
Spread: 0.3 to 0.6m
Leaves: green, deciduous
Flowers: white, 1 to 2cm
Fruit: green, red, yellow, orange, purple, Late summer to autumn

Problems to watch for

By symptom

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Growing it

Propagation: seed
When to plant: Spring
Overwintering: Bring containers indoors before the first frost and place them in a sunny window. Keep the soil slightly moist but not soggy during the winter months.
In containers: Peppers grow very well in containers, provided you use a pot that is at least 30 centimeters deep.

Seed starting

Sow seeds in seed starting mix 8 to 10 weeks before the last frost.
Keep the soil warm using a heat mat to encourage germination.
Provide bright light once seedlings emerge.
Transplant outdoors only after all danger of frost has passed.

Planting aromatic herbs nearby can help mask the scent of peppers from potential pests.

Grows well with

Basil — Basil is thought to improve the flavor and growth of peppers.
Marigold — Marigolds help deter soil nematodes and attract beneficial insects.

Keep away from

Fennel — Fennel can inhibit the growth of many garden vegetables.

Similar species

Habanero — These are much hotter and require a longer, warmer growing season.

Science

Family: Solanaceae
Genus: Capsicum
Order: Solanales
Class: Magnoliopsida
Native range: Tropical Americas
Conservation: Not of conservation concern as it is widely cultivated globally.

It thrives in sunny, well drained soils and relies on bees for pollination.

Value to wildlife: nectar source
Pollinators: bees
Uses: culinary, ornamental, container gardening

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Soil reaction: 6/9
Salinity: 2/9
Light: 8/9
Temperature: 8/9
Moisture: 5/9
Nutrients: 7/9

Taxonomy resolved against GBIF.

Questions people ask

Why are my pepper flowers falling off?: This is often caused by extreme temperatures or lack of pollination.
When should I harvest?: Harvest when the fruit reaches your desired size and color.

Where the name comes from

Capsicum comes from the Greek word kapto, meaning to bite, referring to the pungent taste. Annuum means annual, though the plant is a short lived perennial in warm climates.

Good to know

Peppers were domesticated in Mexico over 6,000 years ago.
The heat in peppers is measured in Scoville Heat Units.
Bell peppers contain more vitamin C than oranges.
There are over 50,000 varieties of peppers worldwide.

Keep your bell pepper growing

This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.