How to Grow Aji Amarillo
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Aji Amarillo
Capsicum baccatum var. pendulum
vegetableAji Amarillo is a Peruvian hot pepper known for its bright yellow color, fruity flavor, and moderate heat (40,000-50,000 Scoville units). It produces elongated, wrinkled peppers that are essential to Peruvian cuisine and can be used fresh, dried, or made into paste. The plant is relatively tall and productive, thriving in warm climates.
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Example Aji Amarillo timeline · Pittsburgh, PA (Zone 6b)
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Plant Aji Amarillo
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 Aji Amarillo
Around Jul 1≈ 75 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Zones 9b-11; can be grown in cooler zones as annuals with protection or indoors
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Get my Aji Amarillo timeline →Growth Stages
Seedling
3-4 weeksTiny plants with two cotyledons followed by true leaves; fragile and delicate appearance
Start indoors 8-10 weeks before last frost. Maintain 70-80°F soil temperature and high humidity. Provide grow lights 14-16 hours daily. Keep soil moist but not waterlogged. Thin or pot up once true leaves appear.
Vegetative
4-6 weeksRapidly growing plant with multiple sets of true leaves, branching structure developing, no flowers yet
Transplant outdoors after last frost when soil reaches 60°F. Harden off gradually. Space 18 inches apart. Maintain consistent watering. Mulch around base. Apply balanced fertilizer every 3-4 weeks. Pinch growing tips early to encourage bushiness.
Flowering
2-3 weeksPlant reaches mature height (24-36 inches); small white to pale purple flowers appear in clusters at leaf axils
Continue consistent watering and feeding. Flowers are self-fertile but benefit from pollinator activity; consider hand-pollinating if indoors. Maintain warm temperatures (70-85°F). Support tall plants with stakes if needed. Reduce nitrogen slightly to encourage fruiting over excessive foliage.
Fruiting
3-4 weeks per fruitSmall green peppers form and elongate; gradually change from green to bright yellow as they mature
Continue deep, consistent watering to prevent fruit cracking. Maintain warm temperatures. Feed with higher potassium fertilizer to support fruit development. Remove any damaged or diseased fruit. Thin if heavily laden to allow proper sizing.
Harvest
Ongoing until frostPeppers fully mature to vibrant yellow color; become slightly wrinkled when ready; may be used green or at full yellow stage
Harvest when fully yellow for peak sweetness and flavor. Use pruning shears to avoid damaging branches. Continue watering and fertilizing to encourage secondary flushes. In warm zones, plants may produce through fall. For fresh use, pick as needed; for drying, allow on plant longer.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with water to dislodge; use neem oil or insecticidal soap; introduce predatory mites; maintain humidity
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Spray water forcefully; use insecticidal soap; neem oil; introduce ladybugs; reflective mulch
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Yellow sticky traps; insecticidal soap; neem oil; strong water spray; ensure good airflow
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Remove infected fruit immediately; maintain sanitation; use row covers early season; spinosad if severe
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Maintain consistent soil moisture; mulch; ensure adequate calcium; avoid excessive nitrogen
Uses
Peruvian Cooking Essential
CulinaryAji Amarillo is the cornerstone of Peruvian cuisine, used in traditional dishes like Aji de Gallina, ceviche sauces, and causa. Fresh peppers add fruity, warm heat to salsas, marinades, and seafood preparations. [source]
Aji Amarillo Paste
CulinaryRoasted and blended into a vibrant yellow paste, it serves as a versatile condiment and cooking base. The paste can be frozen or canned for long-term storage and convenience. [source]
Capsaicin and Immune Support
MedicinalLike other hot peppers, Aji Amarillo contains capsaicin, which has anti-inflammatory properties and may support metabolism and immune function. Traditionally used in Latin American herbal preparations. [source]
Dried Spice and Powder
HouseholdDried Aji Amarillo peppers can be ground into a complex, warm spice powder for seasoning soups, stews, and rice dishes. Adds both color and layered heat to various cuisines. [source]
Ornamental and Decorative
CraftThe bright yellow peppers and attractive plant structure make Aji Amarillo visually striking in gardens and containers. Dried peppers are beautiful in wreaths and decorative arrangements. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Aji Amarillo peppers can be harvested at green stage or left to mature to bright yellow for sweeter, fuller flavor. For culinary use, harvest when fully yellow and slight wrinkling appears. Use sharp pruning shears to avoid damaging branches. Peak harvest typically occurs 8-12 weeks after flowering. Continue picking to encourage more production. For drying, leave peppers on plant longer and harvest when deep yellow; dry in sun or use a dehydrator at 140°F until brittle.
Fun Facts
- 🌱 Aji Amarillo has been cultivated in Peru for over 2,000 years and is so iconic that Peru has a National Aji Amarillo Day celebrated annually.
- 🌱 Unlike most hot peppers that produce multiple colors before maturity, Aji Amarillo transitions from green directly to yellow, making the color change a clear harvest indicator.
- 🌱 The pepper's scientific name 'pendulum' refers to its drooping growth habit, with peppers hanging downward from the branches like small lanterns.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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