How to Grow Cooper's Red
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Cooper's Red
Capsicum annuum 'Cooper's Red'
vegetableCooper's Red is an ornamental pepper variety that produces small, upright red fruits on compact, bushy plants. While primarily grown for its striking appearance with fruits that ripen from green to brilliant red, the peppers are also edible with a mild to medium heat level. This variety is popular for both garden displays and container growing due to its ornamental qualities and prolific fruiting.
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Example Cooper's Red timeline · Pittsburgh, PA (Zone 6b)
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Plant Cooper's 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 Cooper's Red
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Cooper's Red dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-10; can be grown as an annual in cooler zones or indoors during winter
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Seedling
3-4 weeksTiny plants with 2-4 true leaves emerging from soil
Keep soil consistently moist but not waterlogged. Provide bright light 14-16 hours daily. Maintain 70-80°F temperature. Begin fertilizing with diluted liquid fertilizer at half strength every 2 weeks.
Vegetative
4-6 weeksYoung plants developing multiple stems and leaf sets, becoming bushy and compact
Harden off transplants before moving outdoors by exposing to increasing outdoor time over 7-10 days. Plant after last frost date. Provide full sun and consistent moisture. Apply balanced fertilizer every 2-3 weeks.
Flowering
3-4 weeksSmall white flowers appear throughout the canopy; plant becomes increasingly bushy
Maintain consistent watering and temperature (65-80°F). Provide adequate light. Switch to lower nitrogen fertilizer (e.g., 5-10-10) to promote fruiting. Light hand pollination with a brush can improve fruit set.
Fruiting
4-6 weeks per fruit maturation cycleSmall green peppers develop and begin changing color from green to red over several weeks
Maintain steady watering; drought stress can cause fruit drop. Continue fertilizing every 2-3 weeks with lower nitrogen formula. Provide support stakes if plant becomes top-heavy. Monitor for pests.
Harvest & Maturity
Ongoing from mid-summer through fall/early winterPeppers fully ripen to bright red color; plant continues producing new flowers and fruit over extended season
Harvest mature red peppers regularly to encourage continued production. Handle plants gently to avoid breaking branches. Continue regular watering and fertilizing. In zones with winters, bring indoors or treat as annual before frost.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water stream; use insecticidal soap or neem oil. Encourage natural predators like ladybugs.
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Increase humidity by misting. Use miticide spray or neem oil. Remove heavily infested leaves.
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Use yellow sticky traps. Spray with neem oil or insecticidal soap weekly until controlled.
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Remove infested fruit immediately. Use insecticide containing spinosad. Practice crop rotation.
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Improve air circulation. Apply sulfur dust or potassium bicarbonate spray. Remove affected leaves.
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Remove infected leaves and fruit. Avoid overhead watering. Apply copper-based fungicide.
Uses
Fresh eating and cooking
CulinaryCooper's Red peppers are edible with a mild to medium heat level, suitable for fresh consumption, stuffing, roasting, or drying. They can be used fresh in salads, stir-fries, or as decorative elements on serving platters. [source]
Garden and container decoration
OrnamentalThe prolific production of bright red fruits on compact, bushy plants makes this variety highly ornamental for gardens, patios, and indoor displays. The contrast of green foliage with red fruits creates striking visual interest throughout the season. [source]
Drying and preservation
HouseholdCooper's Red peppers can be dried whole or sliced for long-term storage, creating decorative pepper strings or dried pepper collections. Dried peppers retain their vibrant color and can be rehydrated for cooking or used for crafts. [source]
Capsaicin health benefits
MedicinalLike all chili peppers, Cooper's Red contains capsaicin, which has been studied for potential anti-inflammatory and metabolism-boosting properties. Regular consumption may support circulation and pain relief. [source]
Attracting pollinators and birds
WildlifeThe flowers attract beneficial insects like bees and hoverflies, while the ripe red fruits attract birds for seed dispersal. This makes Cooper's Red valuable in pollinator-friendly and wildlife 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
Peppers can be harvested at green stage or left to fully ripen to red (red peppers are slightly sweeter and have more vitamin C). Use a sharp knife or pruners to cut peppers from the stem rather than pulling. Harvest regularly to encourage continued flowering and fruiting throughout the season. In late season, harvest all remaining peppers before the first frost.
Fun Facts
- 🌱 Cooper's Red peppers change color from green to red as they mature, and a single plant can display peppers in multiple color stages simultaneously, creating a beautiful multi-colored appearance.
- 🌱 Ornamental pepper plants like Cooper's Red can live for several years if kept indoors over winter in cooler climates, becoming woody and producing reliably year after year as houseplants.
- 🌱 The heat level of Cooper's Red peppers (measured in Scoville Heat Units) is mild compared to true hot peppers, making them more suitable for general cooking while still providing an ornamental kick to dishes.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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