How to Grow Kona Yellow

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Kona Yellow

Capsicum annuum var. annuum

vegetable

Kona Yellow is a sweet bell pepper variety known for its bright golden-yellow color and mild, sweet flavor. It produces medium-sized blocky peppers that mature from green to vibrant yellow, making it both a culinary and ornamental choice for gardens. This cultivar is prized for fresh eating, cooking, and roasting.

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Example Kona Yellow timeline · Pittsburgh, PA (Zone 6b)

Plant Kona Yellow
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Kona Yellow
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Kona Yellow dates for your own zip code.

Growing Conditions

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Sun: Full sun, 8+ hours daily (6-8 hours minimum, but more heat and light increase yield and sweetness)

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Water: Consistent moisture; water deeply 1-2 inches per week. Reduce watering slightly once fruit sets to concentrate sugars. Avoid waterlogging and inconsistent watering, which causes blossom-end rot and cracking.

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Spacing: 18 inches

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Days to maturity: 60-90 days from transplant to first mature fruit; full production 90-120 days

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Planting depth: 1/4 inch for seeds (start indoors 6-8 weeks before last frost); transplant seedlings at same depth as container

Soil

Type: Well-draining loamy soil rich in organic matter

pH: 6.0-6.8

Amendments:

Compost aged manure peat moss or coconut coir balanced fertilizer (10-10-10 NPK)

Growing Zones

Find your zone →

Thrives in zones 5-10; grows as annual in cooler zones, perennial in tropical zones

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b

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Growth Stages

Seedling

4-8 weeks

Small seedlings with 2-4 true leaves develop slowly under warm conditions. Plants appear delicate and pale green.

Maintain soil moisture and 70-80°F temperature. Provide 12-16 hours of bright light daily. Transplant to larger containers when first true leaves emerge. Begin fertilizing lightly at 2-3 weeks with diluted liquid fertilizer.

Vegetative Growth

3-4 weeks in garden

Plant develops a sturdy stem, multiple branches, and increasingly larger compound leaves. Growth accelerates after hardening off and transplanting to garden.

Harden off seedlings over 7-10 days before transplanting outdoors after last frost and when soil reaches 60°F. Water regularly and mulch to retain moisture. Pinch off early flower buds to encourage stronger branch development.

Flowering

4-6 weeks

Plant produces delicate white or pale purple flowers clustered at branch tips. Flowers are small and appear continuously in warm conditions.

Maintain consistent moisture and temperature (70-85°F optimal). Fertilize with balanced or slightly higher phosphorus fertilizer (5-10-10) to support blooming. Inadequate light, inconsistent watering, or temperatures below 60°F or above 90°F cause flower drop.

Fruiting & Maturation

4-6 weeks to full yellow maturity

Small green peppers develop from flowers and enlarge over 2-3 weeks. Peppers gradually change color from dark green to bright golden yellow, signaling maturity.

Reduce nitrogen and increase potassium to concentrate sugars. Water consistently at 1-2 inches per week. Support heavy fruit with stakes or cages. Remove lower leaves if disease appears. Remove some fruits early if plant is overburdened.

Harvest

Continuous through season

Fully ripe peppers are bright golden yellow, glossy, and firm. Plant continues producing new flowers and fruit if harvested regularly.

Pick peppers when fully yellow for maximum sweetness and vitamin C content. Cut with pruning shears rather than pulling to avoid damaging branches. Continue harvesting through season or until first frost.

Companion Planting

Plan your garden →

Plant with:

Basil Onions Garlic Carrots Parsley Marigolds Borage Spinach

Avoid planting near:

Fennel Kohlrabi Brassicas (cabbage, broccoli, cauliflower) Other Capsicum species (to prevent cross-pollination if seed saving)

Common Pests

Spray with strong water stream, insecticidal soap, or neem oil. Encourage beneficial insects like ladybugs and parasitic wasps.
Use reflective mulches, sticky traps, or neem oil spray. Remove heavily infested leaves and flowers.
Increase humidity and spray with water. Use neem oil or sulfur dust (avoid if temperature exceeds 85°F). Introduce predatory mites.
Use yellow sticky traps, vacuum off insects, or spray with insecticidal soap or neem oil. Encourage natural predators.
Use row covers on young plants, sticky traps, and neem oil. Diatomaceous earth around base of plant.
Remove infested fruit immediately and destroy. Use pheromone traps. Rotate crops annually. Apply insecticidal soap or spinosad in severe cases.
Maintain consistent soil moisture and calcium levels. Mulch heavily to regulate moisture. Add calcium (lime or gypsum) if needed.

Uses

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Fresh Eating & Salads

Culinary

Kona Yellow peppers have a naturally sweet, mild flavor perfect for eating fresh, adding to salads, slicing for crudités, or using as garnishes. Their vibrant color makes them visually striking in raw applications. [source]

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Roasting & Cooking

Culinary

The thick, succulent walls make Kona Yellow ideal for roasting, grilling, sautéing, and stir-frying. When roasted, the skin easily separates and the flesh becomes tender and intensely sweet. [source]

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Vitamin C & Antioxidant Source

Medicinal

Yellow bell peppers are exceptionally rich in vitamin C (about 280 mg per 100g raw), supporting immune function, collagen synthesis, and antioxidant defense. They also contain carotenoids and quercetin, both potent anti-inflammatory compounds. [source]

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Ornamental Garden Appeal

Household

With bright golden fruit ripening on compact, productive plants, Kona Yellow serves as both a productive vegetable crop and ornamental element in landscape and container gardens. [source]

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Pollinator Attraction

Wildlife

Pepper flowers attract bees, hoverflies, and other pollinators essential for fruit set. Growing Kona Yellow supports local pollinator populations and biodiversity in vegetable gardens. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Pick peppers when fully yellow for peak sweetness and vitamin content. Peppers can be harvested green earlier if needed, but yellow stage offers superior flavor and longer shelf life (2-3 weeks refrigerated). Cut with pruning shears rather than twisting to avoid damaging branches and encouraging continued production.

Fun Facts

🌱 The bright yellow color in Kona Yellow peppers comes from lutein and zeaxanthin carotenoids, which concentrate as chlorophyll breaks down during ripening. These compounds are particularly beneficial for eye health.
🌱 Peppers are technically berries, not vegetables botanically speaking—they develop from a single ovary and contain seeds, meeting the botanical definition of a berry.
🌱 Kona Yellow is part of the 'Kona' series of peppers bred to thrive in Hawaiian growing conditions, but the variety has proven successful in diverse climates worldwide.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun Hardening Off Mulch pH Transplant True Leaves

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