How to Grow Blood Orange (Ruby Moro)

Blood Orange (Ruby Moro)

Citrus × sinensis 'Moro'

tree

Ruby Moro is a blood orange cultivar prized for its deep crimson flesh, distinctive raspberry-wine flavor, and striking appearance. This evergreen citrus tree produces medium-sized fruit with a smooth orange-red exterior and dramatic blood-red interior. The tree is moderately vigorous and well-suited to container growing as well as in-ground cultivation.

Growing Conditions

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Sun: Full sun, 8+ hours daily for best fruit quality and color development

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Water: Deep, consistent watering during growing season (spring-summer); reduce in fall-winter. Water when soil is dry 2 inches below surface. Avoid waterlogging. Mature trees tolerate some drought but produce better fruit with regular moisture.

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Spacing: 240 inches

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Days to maturity: 1095-1460

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Planting depth: Same depth as root ball; graft union should be 4-6 inches above soil line

Soil

Type: Well-draining loamy or sandy soil with good organic matter

pH: 6.0-7.5

Amendments:

Compost or well-rotted manure Citrus-specific fertilizer blend Perlite or coarse sand for drainage Sulfur if pH is too high

Growing Zones

Find your zone →

Thrives in zones 8b-10b; can be grown in containers in cooler zones

8a 8b 9a 9b 10a 10b 11a 11b

Growth Stages

Establishment

1-2 years

Young tree focuses on root development and canopy structure. Minimal flowering. Growth is slow to moderate.

Water regularly and deeply. Stake if needed. Prune to establish strong branching structure. Avoid heavy fertilization. Protect from frost.

Vegetative Growth

1-3 years

Tree develops leafy canopy and branches. Leaves are glossy, dark green, lance-shaped with winged petioles. Some flowering may appear but remove early fruit.

Continue regular watering and staking. Apply balanced fertilizer monthly during growing season. Prune to shape. Remove any fruit that develops.

Flowering

3-4 weeks

Fragrant white blossoms appear in spring (February-April in Northern Hemisphere). Flowers are small and clustered in leaf axils.

Maintain consistent watering; irregular water can cause flower drop. Do not over-fertilize with nitrogen. Allow pollination; trees are self-fertile.

Fruit Development

4-5 months

Small green fruit develops after petal fall. Gradually enlarges and transitions from green to orange-red over 4-5 months. Internal pigmentation develops slowly.

Thin excessive fruit (one fruit per 4-6 inches of branch) for larger, higher-quality fruit. Water deeply and consistently. Apply potassium-rich citrus fertilizer. Protect from pests.

Maturity & Harvest

Continuous from November through March

Fruit reaches full size and develops deep crimson-red skin. Interior flesh turns blood-red with characteristic wine-raspberry flavor. Sugar content peaks.

Taste-test fruit before harvesting—flavor improves as fruit stays on tree longer. Harvest by twisting and pulling gently. Peak harvest is winter (November-March).

Companion Planting

Plan your garden →

Plant with:

Basil Borage Marigolds Nasturtiums Chives Dill Fennel

Avoid planting near:

Walnut trees Fennel Cabbage family plants Black locust

Common Pests

Use reflective mulch, horticultural oil sprays, and encourage natural predators. Remove infested leaves if severe. Maintain tree vigor with proper watering.
Spray with horticultural oil in winter or early spring. Prune heavily infested branches. Monitor regularly and remove by hand if populations are small.
Increase humidity with overhead watering. Use miticides or neem oil spray if severe. Introduce predatory mites.
Spray with insecticidal soap or neem oil. Remove affected growth. Maintain tree health. This pest can transmit citrus greening disease.
Spray with horticultural oil or insecticidal soap. Remove with rubbing alcohol on small infestations. Encourage natural predators like ladybugs.
Use yellow sticky traps. Spray with insecticidal soap or neem oil. Increase air circulation. Introduce parasitoid wasps.

Uses

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Fresh juice and cocktails

Culinary

The distinctive wine-like flavor and striking color make Ruby Moro blood oranges ideal for fresh juicing, cocktails (especially Italian aperitivos and sangria), and as a visual garnish. The juice contains natural anthocyanin pigments that create stunning color in beverages. [source]

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Desserts and baking

Culinary

Blood orange juice, zest, and segments are used in fine pastries, cakes, sorbet, and marmalade. The complex flavor profile adds sophistication to chocolate desserts, panna cotta, and glazes. [source]

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Vitamin C and antioxidants

Medicinal

Blood oranges are rich in vitamin C (ascorbic acid) and contain anthocyanins and polyphenols with antioxidant properties. Regular consumption supports immune function and may have anti-inflammatory benefits. [source]

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Natural cleaning and fragrance

Household

The peel's essential oils can be used to make natural cleaners and infused vinegar. Fresh fruit provides lovely aesthetic appeal and fragrance to kitchens and dining areas. [source]

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Pollinator attraction

Wildlife

The fragrant spring blossoms attract bees, butterflies, and other pollinators to the garden, supporting local pollinator populations while improving fruit set. [source]

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

Harvest Tips

Blood oranges are typically harvested December through March in the Northern Hemisphere when fully colored and ripe. The fruit should yield slightly to gentle pressure and feel heavy for its size. Flavor develops best when fruit remains on tree longer; allow fruit to reach full pigmentation before harvesting. Twist gently and pull upward, or use pruning shears to cut the stem. Can be harvested at orange-red stage, but blood-red interior develops more fully with extended tree time. Store at room temperature for immediate use or refrigerate for up to 2-3 weeks.

Fun Facts

🌱 The 'Moro' cultivar originated in Sicily and is the most common blood orange variety; the deep red coloration is believed to result from anthocyanin production triggered by cool nights and warm days.
🌱 Blood oranges contain natural red and purple pigments (anthocyanins) that can stain hands and clothing—these same compounds are potent antioxidants with potential health benefits.
🌱 A mature Ruby Moro can produce 200-300 fruits per year, though commercial growers often thin to 50-100 larger, premium fruits for better quality.

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