VegetableBean
Cover Crop Bean
Cover Crop Bean (Vicia faba) is a cool-hardy annual legume that transforms depleted soil into fertile ground while thriving in hardiness zones 3 through 9. This open-pollinated heirloom reaches 24 to 36 inches tall and matures in 70 to 79 days, though some sources suggest 80 to 90 days. Gardeners prize it as one of the most beneficial cover crops available, valued equally for its nitrogen-restoring properties and its ability to break up compacted soil while suppressing weeds. Whether sown in fall to overwinter or planted in spring, this tenacious legume thrives in cold to moderate temperatures and grows dense, powerful roots that penetrate difficult earth.
Photo © True Leaf Market
Growing Conditions
USDA Zone
3-9
Sunlight
Full Sun
Water
Moderate
Soil
Well-drained Loam; Fertile, Moderately Rich Soil
Growth Stats
36 in
Height
TypeUpright
Spacing
4
Plant Profile
Sunlight
Full Sun
Water
Moderate
Zones
3-9
Size
36in H x ?in W
Growth
—
Care
Moderate
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Highlights
This heirloom fava bean is equally at home as a restorative cover crop and as a vegetable harvest, making it exceptionally versatile for gardens where soil improvement matters as much as food production. Its vigorous root system doesn't just feed the soil with nitrogen; it physically breaks apart compacted layers and pulls up deep nutrients that other plants can't reach. Sown in almost any month, it adapts to both cool-season overwintering and northern gardens where hardier varieties are essential, offering gardeners flexibility that few cover crops provide.
Common Uses
This variety serves a dual purpose. As a cover crop, it restores nitrogen to poor and depleted soils, improves tilth, and suppresses weeds through its dense growth and broad canopy. When grown as a fruiting crop, the beans inside the pod can be harvested and eaten, though the catalog sources emphasize its primary reputation as a soil-restoring legume rather than a culinary specialty. Some gardeners allow it to die back naturally, returning all biomass to the soil, while others harvest the beans for fresh or dried preparation.
Growing Timeline
No timeline data available yet for this variety.
Care Instructions
Direct Sow
Sow Cover Crop Bean directly into the garden in almost any month, though fall sowing is most popular for cool-hardy overwintering. For spring planting in northern zones, direct sow as soon as soil is workable. Press seeds into the soil at the depth specified, spacing them 4 inches apart in rows 30 inches wide. The variety adapts readily to direct sowing and does not require indoor starting.
Harvesting
For cover crop use, terminate the plants after 70 to 79 days of growth (or 80 to 90 days according to some sources) by tilling them into the soil or allowing them to die back naturally, returning all biomass to build soil organic matter. If harvesting beans for eating, pick pods when they feel full and firm, typically in the mid-season window. The dense, upright growth makes beans easy to locate on the vine.
Growing Calendar
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Companion Planting
Pests & Diseases
Ecology & Traits
Edible
Scientific Classification
Vicia faba
Family
Fabaceae
Genus
Vicia
Growth Habit
Upright
Native Status
L48 (I)
History & Origin
“Broad Windsor fava bean represents one of agriculture's oldest traditions: the heirloom legume that restores what the soil loses. This open-pollinated variety has been grown for generations as both food and soil amendment, embodying the practical wisdom of farmers who understood that feeding the earth feeds the harvest. The catalog sources emphasize its role as a beloved heirloom preserved and passed forward because it performs a job that modern agriculture often outsources to chemical fertilizers. For home gardeners, it carries the legacy of self-sufficient farming, where a single crop serves multiple purposes.”