How to Grow Mirasol Pepper

Mirasol Pepper

Capsicum annuum var. mirasol

vegetable

Mirasol peppers are a Mexican chili variety known for their upright growth and bright red fruits that point skyward on the plant. They are moderately hot peppers used fresh or dried and are a key ingredient in traditional Mexican cuisine. The plants are ornamental and productive, making them popular both for culinary and landscape use.

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Example Mirasol Pepper timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Mirasol Pepper

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Mirasol Pepper

    Around Jul 1

    ≈ 75 days after planting

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

Growing Conditions

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Sun: Full sun, 8-10 hours daily for optimal heat and fruit production
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Water: Consistent moisture during growing season; water deeply 1-2 times weekly. Allow soil to dry slightly between waterings. Reduce watering once fruits set. Avoid wetting foliage to prevent disease.
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Spacing: 18 inches
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Days to maturity: 75-90 days from transplant to first harvest
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Planting depth: 0.25 inches for seeds; transplants at soil line

Soil

Type: Well-draining loamy soil, rich in organic matter
pH: 6.0-6.8
Amendments:
Compost or aged manure Perlite for drainage Balanced NPK fertilizer

Growing Zones

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Thrives in zones 9-11; can be grown as annual in zones 5-8 with warm season cultivation

9a 9b 10a 10b 11a 11b

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Growth Stages

1

Seedling

3-4 weeks

Small plants with first true leaves appearing; delicate and light green

Keep soil consistently moist but not waterlogged. Provide bright light 12-14 hours daily. Maintain temperature 70-80°F. Fertilize weakly every 2 weeks with diluted liquid fertilizer.

2

Vegetative

4-6 weeks

Bushy growth with 6-12 inches height; multiple branches forming; dark green foliage

Maintain full sun exposure and warm temperatures (75-85°F). Water consistently. Begin pinching top stems if needed to encourage branching. Transition hardening off before transplanting outdoors.

3

Pre-flowering

2-3 weeks

Plant reaches 12-18 inches; flower buds beginning to form in leaf axils

Continue full sun and consistent watering. Apply balanced fertilizer biweekly. Ensure soil has adequate potassium and phosphorus to support flowering. Avoid nitrogen excess which promotes foliage.

4

Flowering & Fruiting

4-6 weeks

Small white flowers appear, followed by tiny green fruits that elongate and turn red. Upright habit is prominent with fruits pointing skyward.

Maintain consistent watering during this critical stage. Switch to higher phosphorus/potassium fertilizer. Hand-pollinate or allow bees access. Support branches if heavily laden with fruit.

5

Harvest & Maturation

8-10 weeks (ongoing harvest)

Peppers fully red, 3-4 inches long, firm, and glossy. Plant may continue producing new flowers and fruits

Begin harvesting when peppers are fully red and firm. Harvest regularly to encourage continued production. Continue watering and fertilizing. Plants can produce for 8-10 weeks or longer in warm climates.

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Fennel Kohlrabi Brassicas (heavy feeders competing for nutrients)

Common Pests

  • Spray with neem oil or insecticidal soap; increase humidity; remove affected leaves

  • Strong water spray to dislodge; insecticidal soap; neem oil; attract beneficial insects like ladybugs

  • Yellow sticky traps; neem oil; insecticidal soap; improve air circulation

  • Remove infested fruits; use row covers on young plants; neem oil applications; practice crop rotation

  • Remove infected leaves; avoid overhead watering; apply copper fungicide; ensure good air circulation

Uses

🍳

Fresh cooking and salsas

Culinary

Mirasol peppers are used fresh in Mexican cuisine for salsas, stews, and chile rellenos. Their moderate heat (2,500-8,000 Scoville units) makes them accessible to many palates while providing genuine chili flavor. [source]

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Dried chile powder

Culinary

Dried mirasols are ground into chile powder used in traditional Mexican cooking, mole sauces, and spice blends. The drying process concentrates flavors and extends shelf life. [source]

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Ornamental landscape plant

Household

The upright-pointing bright red fruits on compact bushy plants make mirasols attractive ornamental additions to gardens and containers. They combine visual appeal with edible harvest. [source]

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Digestive and anti-inflammatory properties

Medicinal

Capsaicin in mirasol peppers has been traditionally used to support digestion and reduce inflammation. Modern research supports these traditional uses for metabolic and anti-inflammatory benefits. [source]

🎨

Decorative dried chile strings

Craft

Mirasols are traditionally strung together while drying to create ristras, decorative and functional chile arrangements used in Southwestern and Mexican décor and storage. [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 peppers when they reach full red color (approximately 75-90 days after transplanting). Peppers can be harvested green, but flavor and heat intensify as they ripen to red. Use a sharp knife or pruners to cut peppers to avoid damaging the plant. Pick regularly to encourage continued fruiting. Mirasols are traditionally dried for use in sauces and powders; dry by hanging whole peppers in a warm, well-ventilated area for 2-4 weeks.

Fun Facts

  • 🌱 Mirasol means 'looking at the sun' in Spanish, named for the way the peppers point upward on the plant toward the sun
  • 🌱 In Mexico, dried mirasols are called 'guajillo' peppers when they reach a specific stage of drying, becoming a staple ingredient in traditional moles and sauces
  • 🌱 Mirasols were originally cultivated in Durango, Mexico and have been grown there for centuries, with the region still being famous for their production

Gardening Terms

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