How to Grow Almond, Marcona

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Almond, Marcona

Prunus dulcis 'Marcona'

tree

Marcona almond is a premium cultivar prized for its large, sweet kernels and delicate flavor. This tree produces abundant crops of high-quality nuts with thinner shells than standard almonds, making them popular for culinary use and snacking. It's a deciduous tree that requires warm growing conditions and careful pollination planning.

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Example Almond, Marcona timeline · Pittsburgh, PA (Zone 6b)

Plant Almond, Marcona
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Almond, Marcona
Late summer into fall

Before the first fall frost (≈ Nov 8)

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

Growing Conditions

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Sun: Full sun, 8+ hours daily; essential for nut development and quality

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Water: Moderate to regular watering during growing season (spring-early summer); reduce after bloom. Needs consistent moisture during nut development but prefers drier conditions in late summer/fall. Drought-tolerant once established but yields better with irrigation.

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Spacing: 360 inches

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Days to maturity: 2160

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Planting depth: Graft union should be 1-2 inches above soil line

Soil

Type: Well-draining sandy loam or loamy soil

pH: 7.0-8.0

Amendments:

Compost at planting Potassium sulfate Zinc (if deficient)

Growing Zones

Find your zone →

Thrives in USDA zones 8-10; requires warm, dry summers and mild winters

8a 8b 9a 9b 10a

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Growth Stages

Establishment (Year 1-2)

2 years

Young tree develops strong scaffold branches; minimal flowering expected

Focus on structural pruning to create open center. Water regularly to establish root system. Protect from frost damage in early spring. Remove any early flowers to direct energy to growth.

Early Production (Year 3-4)

2 years

Tree begins flowering and setting modest nut crops; branches become more established

Thin young nuts to improve size and quality. Ensure compatible pollinator is flowering simultaneously. Monitor for nutrient deficiencies, especially zinc. Continue shaping tree structure.

Flowering (Late February-March in warm zones)

3-4 weeks

Delicate white to pale pink flowers appear on wood from previous year; highly fragrant

Protect from late frosts that can kill flowers. Ensure pollinator tree is nearby and blooming. Avoid overhead watering during bloom to prevent blossom damage. Do not prune during this period.

Nut Development (April-August)

4-5 months

Pollinated flowers develop into fuzzy green hulls containing growing nuts; kernel develops inside hard shell

Provide consistent irrigation, especially during kernel fill (June-July). Thin excess nuts if overcrowded. Monitor for pests and diseases. Stop watering by late July to encourage hull-split readiness.

Harvest (August-September)

4-8 weeks

Hull naturally splits and dries; nuts fall to ground with shake harvesting; kernels are ready to crack and eat

Use mechanical tree shaker or hand shake to harvest. Collect nuts promptly to prevent damage. Dry nuts thoroughly (1-2 weeks) before storage. Shell quality is superior in Marcona variety.

Companion Planting

Plan your garden →

Plant with:

Sonora almond (pollinator) Nonpareil almond (pollinator) Texas almond (pollinator) Medlar Pomegranate Oleander Rosemary

Avoid planting near:

Peach trees (cross-infection of diseases) Apricot trees (similar pest pressures) Areas with poor drainage Frost pockets (late frost damage)

Common Pests

Remove mummified fruit; use pheromone traps; harvest nuts promptly; chemical control if severe
Prune infested twigs; apply dormant oil in winter; manage nut mummies
Remove rolled leaves by hand; use Bt (Bacillus thuringiensis) sprays; insecticide if necessary
Use earwig traps; reduce mulch depth; apply diatomaceous earth
Monitor with hand lens; spray miticide if populations high; encourage natural predators
Prune affected branches; improve air circulation; avoid overhead watering; copper fungicide in spring

Uses

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Premium snacking and confectionery

Culinary

Marcona almonds are prized for eating fresh and in luxury chocolate products, with their large size and sweet, delicate flavor making them ideal for upscale markets. They command higher prices than standard almonds due to superior kernel quality and thinner shells that crack easily. [source]

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Almond oil and butter

Culinary

The high oil content of Marcona almonds makes them excellent for extracting premium almond oil or creating smooth almond butter. Cold-pressed Marcona almond oil is valued in gourmet cooking for its refined flavor. [source]

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Heart health and nutrition

Medicinal

Almonds are rich in vitamin E, magnesium, potassium, and monounsaturated fats, supporting cardiovascular health and overall wellness. Regular almond consumption is linked to improved cholesterol profiles and reduced inflammation. [source]

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Skincare and cosmetics

Household

Almond oil is a traditional moisturizer used in skincare products for its emollient properties and ability to soothe skin. It's also used in natural cosmetics and personal care formulations. [source]

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Wildlife food source

Wildlife

Almond trees provide early nectar for pollinators in late winter/early spring and nuts for wildlife. The flowers support beneficial insects while the crop provides food for birds and small mammals. [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 in late August to September when hull naturally splits and nuts drop. Use a tree shaker for mechanical harvesting or hand-shake onto tarps. Collect promptly to prevent hull staining and pest damage. Dry nuts in warm, dry location for 1-2 weeks before cracking. Marcona kernels are particularly valuable for their size and mild flavor, commanding premium prices. Test kernel maturity by cracking a sample nut.

Fun Facts

🌱 Marcona almonds originated in Spain and are protected by EU designation of origin (PDO), though the cultivar is now grown successfully in California and other warm regions. Spanish Marconas are prized as the gold standard, with roasted versions being a famous tapa.
🌱 Marcona almonds have noticeably thinner and more delicate shells than common varieties, requiring less force to crack—a trait that has made them increasingly popular with commercial processors and home users.
🌱 Almond trees are highly self-incompatible, meaning Marcona cannot pollinate itself; careful selection of compatible pollinator varieties (like Sonora or Nonpareil) is essential for commercial nut production and viable crops.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun Pollination

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