How to Grow Fava Beans

Growing guide

Overview

Fava beans (broad beans) are a cool-season legume grown for their buttery, nutty shell beans and young greens. Gardeners value them as one of the earliest spring crops because they tolerate frost and fix nitrogen in the soil. They need full sun, well-drained loamy or clay soil, and cool weather to set pods before summer heat arrives.

Soil & planting prep

Fava beans grow well in loamy or clay soil as long as it drains well. Aim for a near-neutral pH around 6.0–7.0, and mix in an inch of compost before planting, but avoid high-nitrogen fertilizer. Sow seeds 1–2 inches deep, spaced 4–6 inches apart in rows 18–24 inches apart.

When to plant

Direct sow fava beans outdoors 4–6 weeks before your last spring frost date, as soon as the soil can be worked. They are frost tolerant and germinate in cold soil, so do not wait until after the last frost. In the listed zones, plant them as an early spring crop rather than a fall crop.

How to plant

1. Choose a full-sun spot with well-drained loamy or clay soil, and loosen the bed before planting.
2. Sow seeds 1–2 inches deep and 4–6 inches apart in rows 18–24 inches apart.
3. Water lightly after sowing, and keep the soil evenly moist until seedlings emerge; after that, water moderately.
4. Add stakes or run twine around the row once plants reach about 12 inches tall, because fava beans can grow 4–5 feet and flop over.
5. When plants begin flowering, pinch out the tender growing tips to reduce aphid pressure and encourage pod set.

5 common mistakes to avoid

• Waiting until after the last frost to sow, which pushes flowering and pod fill into hot weather; direct sow 4–6 weeks before last frost so pods set in cool conditions.
• Skipping support so the 4- to 5-foot plants fall over and pods touch the soil; stake or corral the row early.
• Letting black bean aphids build up on the soft growing tips; check the tops and pinch out the tips when flowers appear to reduce populations.
• Applying high-nitrogen fertilizer or rich manure, which produces leafy growth instead of pods because favas fix their own nitrogen.
• Leaving pods on the plant too long, which makes the beans starchy and tough; harvest when beans are just visible through the pod and before pods turn yellow.

Harvesting & storage

Start checking pods about 80–100 days after sowing. Harvest when the beans are just visible through the pod; pods should feel full but still green. Pick regularly to encourage more pods, shell fresh beans within a few days, or blanch and freeze them; for dry beans, leave pods on the plant until dry.

Companion planting

Fava beans fix nitrogen, so they are a good early companion before or alongside leafy greens such as lettuce and spinach. Avoid planting them right after other legumes in the same bed to reduce disease and pest carryover.

Growing in containers

Fava beans are not a good container crop. The plants grow 4–5 feet tall and need staking, so they perform best in the ground; no container size is recommended for this crop.

Pro tips

Direct sow 4-6 weeks before last frost — favas need cool conditions to set pods and fail in summer heat. Support with stakes as plants grow to 4-5 feet. Pinch out growing tips when in flower to reduce aphid problems and improve pod set. Harvest pods when beans are just visible through the pod.