How to Grow Kaohsiung Red
Kaohsiung Red
Capsicum annuum
vegetableKaohsiung Red is a vibrant red bell pepper variety originating from Taiwan, prized for its sweet flavor, thick walls, and productive growth habit. It produces large, blocky peppers with exceptional flavor suitable for fresh eating, cooking, and roasting. This variety is popular in Asian markets and home gardens for its reliability and high yields.
When should you plant Kaohsiung Red in your zone?
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Example Kaohsiung Red timeline · Pittsburgh, PA (Zone 6b)
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Plant Kaohsiung Red
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Kaohsiung Red
Around Jun 26≈ 70 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Kaohsiung Red dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-10; can be grown in zones 3-4 as annual with protection or in containers moved indoors
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Get my Kaohsiung Red timeline →Growth Stages
Seedling
4-6 weeksSmall plants with 2-4 true leaves, delicate stem structure
Provide bright light 14-16 hours daily, keep soil consistently moist but not saturated, maintain 70-80°F temperature, use seedling heat mat if soil below 70°F
Vegetative
3-4 weeks in gardenBushy growth with multiple branches, dark green foliage, no flowers yet
Harden off seedlings over 7-10 days before transplanting outdoors after last frost. Transplant when 6-8 inches tall. Pinch growing tips at 6-8 inches to encourage bushiness. Water regularly and apply balanced fertilizer every 2-3 weeks.
Flowering
2-3 weeksSmall white flowers appear at branch junctions; plant reaches mature height of 18-24 inches
Maintain consistent watering; fluctuating moisture causes flower/fruit drop. Switch to lower-nitrogen, higher-phosphorus fertilizer to support flowering. Ensure 8+ hours direct sunlight daily. Provide support stakes if needed for heavily-laden branches.
Fruiting
4-6 weeks per pepperSmall green peppers develop from flowers, gradually enlarge over 4-6 weeks. Peppers transition from green to bright red at maturity.
Continue consistent watering and fertilizing every 3-4 weeks with balanced or slightly higher potassium formula. Remove first few flower buds in very hot climates to reduce stress. Support heavy fruit with stakes or cages. Thin excessive fruit if desired for larger peppers.
Harvest
Ongoing until frost or end of seasonPeppers reach full size (3-4 inches) and turn bright red, with glossy skin and thick walls
Harvest by cutting with pruners rather than pulling. Plants continue producing through season; regular picking encourages more blooms. In cooler climates, harvest green peppers before frost and ripen indoors at room temperature.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; release ladybugs; strong water spray to dislodge; reflective mulch as deterrent
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Increase humidity; spray with water; use miticide or insecticidal soap; neem oil application
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Remove affected fruits immediately; use pheromone traps; spinosad spray; cultural controls like removing fallen fruit
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Remove infected leaves; improve air circulation; avoid overhead watering; use copper fungicide; resistant varieties where available
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Improve air circulation; apply sulfur dust or potassium bicarbonate fungicide; remove affected leaves; maintain proper spacing
Uses
Fresh eating and roasting
CulinaryKaohsiung Red's thick walls, sweet flavor, and large blocky shape make it ideal for fresh salads, stir-fries, and roasting. The peppers are excellent for stuffing whole, slicing raw, or charring for deep flavor. [source]
Preserved preservation and canning
CulinaryThe firm texture and thick walls make these peppers excellent for freezing, canning, pickling, and drying. They retain quality well in storage. [source]
Vitamin C and antioxidant content
MedicinalRed bell peppers are exceptionally high in vitamin C (approximately 200mg per 100g), carotenoids, and flavonoids that support immune function and reduce inflammation. [source]
Nutrition and dietary variety
HouseholdPeppers provide low-calorie nutrition with fiber, potassium, and B vitamins, making them valuable for healthy diets and weight management. [source]
Seed saving and breeding
CraftKaohsiung Red's open-pollinated nature makes it suitable for seed saving and home breeding programs to develop custom pepper varieties. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when peppers reach full size and turn bright red for optimal sweetness and flavor; this takes 4-6 weeks after fruit sets. Cut peppers with 1-2 inches of stem attached using pruning shears to avoid plant damage. Mature peppers can be left on plant to encourage more flowering, or harvested green. Continue harvesting until first frost. In cool climates, pick remaining green peppers before frost and ripen indoors at 65-75°F in a box with paper towels.
Fun Facts
- 🌱 Kaohsiung Red is named after Kaohsiung, a major city in Taiwan, and represents an important agricultural contribution from Taiwanese breeding programs
- 🌱 Red peppers are actually fully mature green peppers that have been left on the plant longer; the longer growing season develops sweeter flavor and higher vitamin C content
- 🌱 A single well-maintained Kaohsiung Red plant can produce 10-20+ mature peppers in a growing season, making it one of the most productive pepper varieties for home gardeners
Gardening Terms
New to gardening? Learn about terms used in this guide:
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