Encyclopedia

Definitive guides for crops, pests, and agricultural diseases.

Marsh Marigold
Crop
Marsh Marigold
Moderate

Marsh Marigold is a wetland perennial prized for its bright yellow spring blooms and ability to thrive in saturated soils where most crops fail. This guide delivers professional-grade advice on site preparation, propagation, seasonal care, and organic pest management for reliable production.

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Marshmallow Root
Crop
Marshmallow Root
Moderate

Marshmallow Root (Althaea officinalis) is a perennial herbaceous plant valued for its mucilaginous roots used in herbal medicine, confectionery, and traditional remedies. It thrives in moist, fertile soils and requires careful attention to spacing, watering, and organic pest management for optimal root development.

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Marula (Sclerocarya birrea)
Crop
Marula (Sclerocarya birrea)
Challenging

Marula (Sclerocarya birrea) is a resilient African tree prized for its nutrient-rich fruits, versatile oil, and cultural significance. Thriving in arid savannas, it offers small farmers a drought-tolerant crop with multiple revenue streams from fruit, nuts, and bark. This guide provides expert cultivation techniques for optimal yields in suitable climates.

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Mary Washington Asparagus
Crop
Mary Washington Asparagus
Moderate

Mary Washington Asparagus is a classic open-pollinated asparagus variety prized for its dependable productivity, cold tolerance, and long-lived perennial crowns. Best known for producing flavorful green spears and for its historical rust tolerance, it remains an excellent choice for home gardens and diversified market plots where patience is rewarded with harvests for 15 years or more.

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Marzano Fire Tomato
Crop
Marzano Fire Tomato
Moderate

Marzano Fire Tomato is a high-yielding, determinate hybrid developed from San Marzano genetics, prized for its elongated shape, intense flavor, and exceptional performance in both fresh market and processing applications. It combines disease resistance with early maturity and concentrated fruit set, making it a reliable choice for commercial and home growers alike.

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Mashua (Tropaeolum tuberosum)
Crop
Mashua (Tropaeolum tuberosum)
Moderate

Mashua is a hardy Andean tuber crop prized for its edible, peppery-flavored roots and attractive edible flowers. It thrives in cool highland climates and offers excellent nutritional value with natural pest-repellent properties.

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Masterwort (Peucedanum ostruthium)
Crop
Masterwort (Peucedanum ostruthium)
Moderate

Masterwort is a hardy perennial herb in the Apiaceae family, historically cultivated across Europe for its medicinal roots and aromatic foliage. It thrives in cool, moist mountain climates and well-drained soils, producing large, deeply lobed leaves and umbels of white flowers. Today it is valued for both its culinary flavoring potential and its role in organic medicinal herb gardens.

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Mastic Resin
Crop
Mastic Resin
Challenging

Mastic resin is the aromatic, tear-shaped exudate harvested from the trunks and branches of the evergreen mastic tree, valued for its culinary, medicinal, and industrial uses. Native to the Mediterranean basin, the crop requires well-drained, calcareous soils and a long, hot, dry summer to produce high-quality resin. This guide covers complete cultivation from site selection through harvest and storage.

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Mate (Ilex paraguariensis)
Crop
Mate (Ilex paraguariensis)
Challenging

Mate (Ilex paraguariensis) is a subtropical evergreen tree native to South America, cultivated for its caffeine-rich leaves that are dried, roasted, and brewed into the traditional infusion known as yerba mate. The crop thrives in humid subtropical climates with acidic soils and requires careful management of shade, pruning, and harvest cycles to maintain high-quality leaf production over decades.

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Matta Rice (Palakkadan)
Crop
Matta Rice (Palakkadan)
Moderate

Matta Rice, known as Palakkadan Matta, is a unique rice variety celebrated for its rich nutritional profile and distinctive flavor. This guide provides in-depth cultivation practices for optimal growth and harvest.

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maximilian sunflower
Crop
maximilian sunflower
Easy

Maximilian sunflower is a tall, perennial native wildflower prized for erosion control, pollinator support, and low-maintenance biomass production. It thrives in diverse soils across USDA zones 3-9 and produces abundant yellow blooms from late summer into fall. This guide covers every stage of commercial and home-scale cultivation with evidence-based practices.

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Mayapple
Crop
Mayapple
Moderate

Mayapple is a native North American woodland perennial valued for its unique foliage and edible ripe fruit. This comprehensive guide covers soil requirements, propagation, organic care, and harvesting for sustainable production.

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Maypop (Passiflora incarnata)
Crop
Maypop (Passiflora incarnata)
Easy

Maypop, or Passiflora incarnata, is a vigorous native North American passionflower vine prized for its exotic blooms, edible fruits, and medicinal uses. Thriving in USDA zones 6-10, it offers easy propagation, drought tolerance once established, and attracts pollinators while producing tangy, yellow fruits in late summer. This comprehensive guide covers cultivation from soil prep to harvest for optimal yields.

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McIntosh Apple
Crop
McIntosh Apple
Moderate

McIntosh is a classic cold-climate dessert apple prized for its aromatic flesh, tender texture, and bright sweet-tart flavor. It performs best in regions with adequate winter chill, moderate summers, and attentive disease and canopy management, making it a rewarding but moderately demanding cultivar for home orchards and commercial plantings.

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Medjool
Crop
Medjool
Challenging

Medjool dates are premium soft dates prized for their large size, caramel-like sweetness, and chewy texture. This definitive guide covers soil preparation, propagation, irrigation, fertilization, pest management, harvesting, and storage for commercial and home growers.

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Meeker Raspberry
Crop
Meeker Raspberry
Moderate

Meeker Raspberry is a classic floricane-fruiting red raspberry cultivar valued for high yields, rich flavor, and strong performance in cool-temperate production regions. It is especially respected by commercial and serious home growers for processing quality, machine-harvest suitability, and dependable summer crops when grown in well-drained, fertile soil.

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Merlot Grapes
Crop
Merlot Grapes
Challenging

Merlot is one of the world’s most important wine grape cultivars, valued for its relatively early ripening, supple tannins, and deep adaptability across temperate viticultural regions. Successful Merlot production depends on precise control of vigor, water, canopy density, and crop load, because the variety can easily swing from elegant and concentrated to diluted and herbaceous when site or management is poorly matched.

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Mexican Garcinia (Luc's)
Crop
Mexican Garcinia (Luc's)
Challenging

Mexican Garcinia (Luc's), or Garcinia lucida, is a tropical evergreen fruit tree prized for its juicy, tangy fruits rich in antioxidants and vitamin C. Native to southern Mexico's rainforests, this underutilized crop thrives in humid, warm climates and offers small-scale farmers a high-value alternative to common tropical fruits. With proper care, it yields prolifically for decades, supporting agroforestry systems.

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Meyer Lemon
Crop
Meyer Lemon
Moderate

Meyer lemon is a cold-tender citrus prized for its thin, fragrant rind, low acidity, and sweet-floral juice. Thought to be a hybrid between a true lemon and a mandarin-type citrus, it is especially well suited to home orchards, patio containers, and mild-climate production where fruit quality matters as much as yield.

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Midnight Snack Tomato
Crop
Midnight Snack Tomato
Moderate

Midnight Snack Tomato is a high-yielding, indeterminate cherry tomato cultivar prized for its striking deep purple-black fruit that sweetens dramatically when fully ripe. This guide delivers professional-grade cultivation advice covering soil preparation, planting, care, pest management, harvest timing, and companion strategies to maximize flavor and output.

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Milky Queen Rice
Crop
Milky Queen Rice
Moderate

Milky Queen Rice is a premium short-grain rice renowned for its soft, sticky texture and sweet aroma, making it a favorite choice for sushi and other Japanese dishes. This guide provides comprehensive details on successfully cultivating this esteemed variety with professional-grade agricultural techniques.

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Millet
Crop
Millet
Easy

Millet is a diverse group of small-seeded cereal grasses prized for drought tolerance, short growing cycles, and dependable grain production in marginal soils. Grown across Africa and Asia for thousands of years, millet remains one of the most resilient staple crops for dryland farming, smallholder production, forage systems, and climate-stressed agriculture.

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mimosa
Crop
mimosa
Moderate

Mimosa (Albizia julibrissin) is a fast-growing deciduous tree prized in agroforestry for nitrogen fixation, ornamental flowers, and light timber. This guide delivers professional, practical advice on soil, climate, planting, care, pest management, harvest, and companion strategies for commercial and small-scale growers.

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Miner’s Lettuce
Crop
Miner’s Lettuce
Easy

Miner’s Lettuce is a versatile, low-maintenance leafy green, known for its mild flavor and high nutritional value. It thrives in cool conditions, making it ideal for early spring planting.

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