Encyclopedia
Definitive guides for crops, pests, and agricultural diseases.
Detroit Dark Red Beet
Detroit Dark Red Beet is a classic heirloom table beet prized for its deep blood-red flesh, uniform round roots, and dependable performance across a wide range of climates. It is especially valued by market growers and home gardeners for its sweet earthy flavor, excellent greens, strong adaptability, and suitability for fresh eating, canning, and storage.
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Devil's Tongue Red
Devil's Tongue Red is a high-heat Capsicum chinense cultivar prized for its elongated, wrinkled pods, fruity aroma, and intense pungency. This guide delivers professional-grade advice on soil preparation, planting, integrated pest management, and post-harvest handling to maximize both yield and capsaicin quality.
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Devil's Tongue Yellow
Devil's Tongue Yellow is a high-yielding, extremely hot yellow habanero-type pepper prized for its intense heat and fruity flavor profile. This vigorous annual produces elongated, wrinkled pods that ripen from green to brilliant yellow and are ideal for fresh use, hot sauces, and drying. The cultivar thrives in warm climates with full sun and well-drained soil, rewarding growers with prolific harvests when given consistent moisture and nutrition.
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Dhaincha
Dhaincha is a fast-growing, nitrogen-fixing leguminous crop widely used as green manure, fodder, and soil improver in tropical and subtropical agriculture.
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Dill
Dill is an annual herb prized for its feathery foliage and aromatic seeds, widely cultivated for culinary, medicinal, and pickling uses. It grows rapidly in cool seasons and requires well-drained soil with full sun exposure. Proper spacing, consistent moisture, and timely harvesting maximize both leaf and seed yields.
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Dill Seed (Mammoth)
Dill Seed (Mammoth) is a vigorous, tall annual herb prized for its large, flavorful seeds and aromatic foliage. This variety offers superior seed production, disease resistance, and strong stems ideal for commercial or home-scale cultivation.
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dogwood
Dogwood borer (Synanthedon scitula) is a major pest targeting stressed dogwood trees, causing severe damage to trunks and branches through larval tunneling. This guide provides comprehensive diagnostics, lifecycle insights, organic management strategies, and prevention tips for agricultural and ornamental settings. Effective control hinges on early detection and cultural practices to maintain tree vigor.
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Doongara Rice
Doongara Rice, a variety of low-GI, long-grain rice, is renowned for its nutty flavor and fluffy texture. Its cultivation requires specific soil and climatic conditions, yet offers significant health benefits due to its high energy and low starch properties.
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Dorset Naga
Dorset Naga is an exceptionally hot cultivar of the habanero family, renowned for its intense heat and rich, fruity flavor. Originating from selective breeding in Dorset, England, this chili pepper is prized by both home gardeners and commercial growers for its consistent performance and culinary versatility. This definitive guide covers all aspects of successful cultivation, from soil preparation to post-harvest handling.
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Douglas-fir
Douglas-fir (Pseudotsuga menziesii) is a towering coniferous tree native to western North America, often misidentified as a true fir but valued for its timber in forestry. In agricultural and orchard settings, it acts as an invasive competitor, shading out crops, harboring pests like [aphids](/wiki/aphids), and disrupting ecosystems. This guide provides diagnostic tools and organic management strategies for controlling Douglas-fir encroachment on farmlands.
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Doum Palm (Hyphaene thebaica)
The Doum Palm (Hyphaene thebaica) is a resilient desert palm native to arid regions of Africa, valued for its nutritious fruit, edible heart, and versatile uses in traditional agriculture. This comprehensive guide covers cultivation from propagation to harvest, ideal for farmers in hot, dry climates seeking drought-tolerant crops. Discover optimal soil, pest management, and companion planting strategies for successful growth.
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Dr. Wyche's Yellow Tomato
Dr. Wyche's Yellow Tomato is a rare, open-pollinated heirloom beefsteak variety prized for its large, golden-yellow fruit, rich flavor, and vigorous indeterminate growth. Originating from Dr. John Wyche, a noted tomato collector and Cherokee heritage preservationist, this cultivar stands out for its low acidity, meaty texture, and excellent disease tolerance. It thrives in warm climates and rewards growers with heavy yields of sweet, low-acid tomatoes perfect for fresh eating, sauces, and preserving.
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Dragon Fruit
Dragon Fruit is a climbing, night-blooming cactus grown for its striking, nutrient-dense fruit and high market value. Although it is cactus by lineage, it performs best with regular moisture, fertile well-drained soil, strong trellising, and disciplined canopy management rather than desert-style neglect.
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Dragon Fruit (Alice Snow)
Dragon Fruit (Alice Snow) is a stunning white-fleshed variety of Hylocereus undatus prized for its sweet, mild flavor and exceptional cold tolerance compared to other pitaya cultivars. This climbing cactus thrives in warm climates but adapts well to containers and greenhouses, producing vibrant pink-skinned fruits with subtle snow-white flesh. Ideal for home gardeners and small farms seeking exotic, high-value crops with minimal maintenance.
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Dragon Fruit (American Beauty)
Dragon Fruit (American Beauty) is a stunning red-fleshed variety of Hylocereus undatus, prized for its vibrant magenta skin, sweet berry flavor, and high ornamental value in tropical gardens. This self-fertile cultivar thrives in warm climates, producing abundant fruit on climbing cacti stems, making it ideal for home orchards and commercial cultivation. With proper support and minimal care, it yields exotic fruits rich in antioxidants and vitamins.
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Dragon Fruit (Dark Star)
Dragon Fruit (Dark Star) is a striking, night-blooming cactus variety prized for its deep maroon-purple skin and exceptionally sweet, vibrant magenta flesh with minimal seeds. This self-fertile hybrid thrives in warm climates, producing heavy yields of premium fruit on sturdy, climbing stems. Ideal for home gardeners and small farms seeking exotic, high-value crops with low maintenance.
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Dragon Fruit (Delight)
Dragon Fruit (Delight) is a premium hybrid variety of pitaya celebrated for its exceptionally sweet, juicy white-fleshed fruit with vibrant pink skin, offering superior flavor and higher yields compared to standard dragon fruit. Thriving in warm climates, this epiphytic cactus produces stunning nocturnal flowers and is ideal for home gardeners and small-scale farmers seeking exotic, high-value crops. With proper support and minimal care, it delivers bountiful harvests year after year.
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Dragon Fruit (Physical Graffiti)
Dragon Fruit (Physical Graffiti) is a stunning hybrid variety known for its vibrant pink skin with striking yellow stripes and sweet, flavorful white flesh speckled with black seeds. This epiphytic cactus thrives in warm climates, producing exotic fruits on climbing vines that can reach 20 feet. Ideal for home gardeners and small farms seeking high-value, low-maintenance crops with ornamental appeal.
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Dragon Fruit (Purple Haze)
Dragon Fruit Purple Haze is a stunning variety of pitaya known for its vibrant magenta skin and exceptionally sweet, purple-fleshed fruit with rich berry flavors. This climbing cactus thrives in warm climates, producing heavy yields on sturdy trellises with minimal care once established. Ideal for home gardeners and small farms seeking exotic, high-value crops.
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Dragon Fruit (Yellow Selenicereus)
Yellow Dragon Fruit (Selenicereus megalanthus) is a stunning, high-value cactus crop prized for its sweet, tangy yellow-skinned fruits with white flesh. This guide provides professional agricultural insights on cultivation, from propagation to harvest, optimized for tropical and subtropical climates. Achieve bountiful yields with expert care regimes tailored for small farms and commercial growers.
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Dragon Fruit (Zamorano)
Dragon Fruit (Zamorano) is a premium variety of pitaya celebrated for its exceptional sweetness, large fruits, and high yields, making it ideal for commercial and home growers in tropical climates. This comprehensive guide covers everything from propagation to harvest, optimized for maximum productivity. Discover proven techniques for thriving Zamorano plants with superior fruit quality.
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Dragon Tongue Bean
Dragon Tongue Bean is a distinctive Dutch heirloom bush bean prized for its buttery, stringless pods splashed with dramatic purple streaking. It performs well in warm temperate gardens, offers an extended harvest window as both snap and shell bean, and is especially valued by growers seeking high eating quality, visual appeal, and dependable yields without trellising.
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Dragon's Blood Resin
Dragon's Blood Resin is a high-value medicinal latex harvested from the Amazonian tree Croton lechleri, prized for its wound-healing, antimicrobial, and anti-inflammatory properties. This comprehensive guide covers optimal growing conditions, propagation, care, pest management, harvesting, and companion planting strategies for commercial and small-scale producers.
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Dry Beans
Dry beans are nutrient-dense legumes grown for their mature, dried seeds. This guide covers professional production practices from soil preparation through harvest and storage.
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