When to Plant and Harvest Grains, Nuts & Legumes in Delaware

Delaware’s moderate climate and well-drained soils provide excellent conditions for growing a variety of grains, nuts, and legumes. Understanding the optimal planting and harvesting times for these crops is essential for maximizing yield, quality, and overall success in your agricultural or gardening efforts. This article explores the best practices for planting and harvesting common grains, nuts, and legumes suited to Delaware’s unique environment.

Grains in Delaware: Planting and Harvesting Guide

Common Grains Grown in Delaware

Delaware farmers primarily grow grains such as corn (maize), wheat, barley, oats, and rye. Each grain has specific climatic requirements that influence planting and harvesting schedules.

Corn (Maize)

Corn is a major grain crop in Delaware due to its adaptability and high demand.

• Planting Time: Corn should be planted after the last frost date, typically between mid-April and early May. Soil temperatures need to be consistently above 50°F (10°C) for optimum seed germination.
• Harvest Time: Corn usually matures within 60-100 days, depending on the variety. Harvest typically occurs from late August through October when kernels are hard and moisture content drops to around 20-25% for field corn; sweet corn is harvested earlier when kernels are milky.

Wheat

Wheat is commonly planted as a winter or spring crop in Delaware.

• Planting Time: For winter wheat, plant seeds from mid-September to early October so plants can establish before winter dormancy. Spring wheat is planted in early spring as soon as the soil can be worked, around mid-March to April.
• Harvest Time: Winter wheat is harvested in late June to early July; spring wheat matures more quickly and is harvested by early to mid-July.

Barley

Barley grows well during Delaware’s cooler months.

• Planting Time: Similar to wheat, barley can be planted in fall (winter barley) or spring. Fall planting occurs from September through October; spring barley is planted as early as March.
• Harvest Time: Barley is ready for harvest about 90 days after planting—late June for winter barley or mid-July for spring barley.

Oats

Oats thrive in Delaware’s temperate climate but prefer slightly cooler conditions than corn.

• Planting Time: Early spring planting between March and April is ideal.
• Harvest Time: Oats mature fairly quickly—harvest usually occurs by late July or early August.

Rye

Rye is another grain suitable for Delaware’s climate and soil types.

• Planting Time: It is generally sown as a winter crop from September through October.
• Harvest Time: Rye harvesting occurs in mid to late July when the grains have fully ripened.

Nuts Suitable for Delaware

While Delaware’s climate is not ideal for all nut varieties, several nut trees thrive here, including black walnuts, pecans, and hazelnuts.

Black Walnuts

Black walnuts are native to the eastern US and perform well in Delaware’s environment.

• Planting Time: Plant black walnut trees in early spring (March-April) or fall (October-November) when the soil isn’t frozen.
• Harvest Time: Nuts mature and drop naturally from late September through October. Harvest promptly after falling to prevent spoilage.

Pecans

Pecans can be grown successfully with proper care despite being more common in southern states.

• Planting Time: Early spring planting (March-April) is best after danger of frost has passed.
• Harvest Time: Pecans usually mature by late September through October. Similar to walnuts, gather pecans soon after they fall from trees.

Hazelnuts (Filberts)

Hazelnuts are hardy shrubs that adapt well to Delaware’s climate.

• Planting Time: Plant hazelnut bushes during early spring or fall.
• Harvest Time: Harvest occurs between late August and September once nuts develop a brown shell and begin dropping.

Legumes: Planting & Harvest Timing

Legumes are important both for human consumption and soil health due to their nitrogen-fixing capability. Common legumes grown in Delaware include soybeans, dry beans, peas, cowpeas (black-eyed peas), and lentils.

Soybeans

Soybeans are one of the prominent legume crops in Delaware agriculture.

• Planting Time: Soybeans should be planted after the last frost date when soil temperatures reach 55°F (about mid-May).
• Harvest Time: Depending on variety, soybeans mature within 75-100 days. Most harvesting takes place from late September through October when pods turn brown and seeds harden.

Dry Beans (Snap Beans & Shell Beans)

Beans such as kidney beans, navy beans, pinto beans, and snap beans are cultivated both commercially and by home gardeners.

• Planting Time: Beans should be planted once soil temperatures reach at least 60°F. In Delaware this typically means mid-May through June.
• Harvest Time: Snap beans are harvested immature pods approximately 50-60 days after planting; shell/dry beans require longer maturation—up to 90 days—and are harvested once pods dry on the plant by late August through September.

Peas

Peas prefer cooler weather compared to many other legumes.

• Planting Time: Plant peas as early as late February through April because they tolerate light frost.
• Harvest Time: Peas mature quickly—snap peas within 60 days—and should be harvested while pods are still tender before they harden; dry peas are harvested later when pods dry out by mid-summer.

Cowpeas (Black-eyed Peas)

Cowpeas grow well during warm summer months in Delaware.

• Planting Time: Plant cowpeas after all chance of frost has passed around mid-May through June.
• Harvest Time: These legumes take about 70–90 days to mature with harvest occurring late August to early September when pods dry on the plant.

Lentils

Lentils are less commonly grown but can thrive under favorable conditions.

• Planting Time: Lentils require cool weather; plant them early spring as soon as soil can be worked—typically March-April.
• Harvest Time: Lentils mature approximately 80–100 days after planting with harvest between July and August when pods dry completely.

Tips for Successful Planting & Harvesting in Delaware

1. Know Your Frost Dates: The average last frost date in Delaware ranges between April 15–30 depending on location. The first frost usually occurs around October 15–30. Scheduling your planting based on these dates helps avoid damage from cold weather.

2. Soil Preparation: Well-drained loam soils with good organic matter content support healthy root development. Test soil pH regularly; most grains prefer slightly acidic to neutral soils (pH 6.0–7.0).

3. Crop Rotation: Rotate legumes with grains annually to improve soil nitrogen levels naturally and reduce pest/disease buildup.

4. Irrigation Needs: While grains often rely on rainfall alone, nuts and legumes may require supplemental watering during dry spells for optimal growth.

5. Pest & Disease Management: Monitor crops regularly for common pests like corn borers or bean beetles. Implement integrated pest management strategies early to prevent outbreaks.

6. Harvest Timing Accuracy: Harvest at peak maturity—not too early or too late—to ensure best flavor, nutritional value, storage longevity, and marketability.

Conclusion

Successfully growing grains, nuts, and legumes in Delaware requires understanding the region’s climatic patterns along with crop-specific requirements for planting and harvesting times. By aligning your activities with seasonal changes—from soil preparation through timely harvest—you can optimize yields while preserving crop quality. Whether you’re a commercial grower or a home gardener aiming for fresh produce and sustainable practices, this timing guide will help steer your efforts toward a bountiful season year after year.