A little more green in the world ✳ 2,083 plants across 13 growing zones
worldthatgrows.
Pepper · Easy

How to Grow Bell Pepper 'Red Knight'

Capsicum annuum 'Red Knight'

Bell Pepper 'Red Knight' is a reliable warm-season variety prized for its excellent resistance to bacterial leaf spot and tobacco mosaic virus. Gardeners value this easy-to-grow plant not only for its productive yield but also because it thrives in containers as well as garden beds.

☀SunFull sun (6+ hours)
💧Water1-1.5 inches per week, consistent moisture
📅Harvest75-80 days
🗺Zones4–11
📏Height1-3 feet
Bell Pepper 'Red Knight'📷 Wikipedia: Capsicum annuum

Starting Bell Pepper 'Red Knight': indoors or direct sow?

🌾 Sow directly in the garden — Bell Pepper 'Red Knight' is not usually started indoors.

As a warm-season crop, do not start indoors; instead, direct sow seeds or transplant seedlings only after the last frost has passed and soil temperatures have warmed sufficiently.

Find your last frost date by ZIP code →

Soil, care & harvest

Prepare loose, fertile soil with a pH between 6.0 and 6.8 before starting seeds indoors. Sow the seeds 10 to 14 days before your last expected frost date, placing them about one-quarter inch deep. Germination typically occurs within two weeks, so keep the seedbed consistently moist during this period.

Space plants 18 to 24 inches apart in full sun to ensure proper air circulation. Provide consistent moisture, aiming for 1 to 1.5 inches of water weekly, and apply mulch around the base to retain soil temperature. Feed the plants regularly with a balanced fertilizer to support fruit development throughout the season.

Watch for aphids, spider mites, pepper weevil, and hornworms; inspect leaves frequently and use organic controls like insecticidal soap if needed. Prevent blossom end rot by maintaining even soil moisture. Harvest fruits 75 to 80 days after transplanting when they reach full color and firmness.

When to Plant Bell Pepper 'Red Knight'

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 1 May — October – August
Zone 2 April – May — September
Zone 3 April — September – October
Zone 4 March – April — August – October
Zone 5 March — August – October
Zone 6 March — August – October
Zone 7 February – March — July – September
Zone 8 February — July – September
Zone 9 January — June – August
Zone 10 January — May – July
Zone 11 January — April – June
Zone 12 January — April – June
Zone 13 January — April – June

Companion Plants for Bell Pepper 'Red Knight'

✓ Good companions

Basil

Repels aphids, spider mites, and thrips while potentially improving pepper flavor

Carrots

Help break up soil for pepper root development and don't compete for nutrients

Marigolds

Repel nematodes, aphids, and whiteflies with their strong scent

Nasturtiums

Act as trap crops for aphids and cucumber beetles while repelling whiteflies

Onions

Repel aphids, thrips, and other pests that commonly attack peppers

Oregano

Deters pests like aphids and spider mites while attracting beneficial insects

Parsley

Attracts beneficial insects like hoverflies and parasitic wasps that control pepper pests

Tomatoes

Share similar growing conditions and can help shade pepper roots from intense sun

✗ Keep away from

Black Walnut

Releases juglone toxin that causes wilting and stunted growth in peppers

Brassicas

Compete heavily for nutrients and may stunt pepper growth due to different soil pH preferences

Fennel

Produces allelopathic compounds that inhibit pepper growth and development

Nutrition Facts

Per 100g serving (USDA FoodData Central)

0.72gProtein
0.94gFiber
99.50mgVitamin C
0.19mgIron
Notes from the garden

A greener inbox, occasionally.

Seasonal planting ideas, useful tips and a little inspiration. No weeds.