PLANTING & SPACING
Sow seeds about 1 inch deep and space them 4 to 5 inches apart. Space rows 1 1/2 feet to 2 1/2 feet apart. You may have to thin out weaker seedlings later to attain 8 to 10 inch spacing.
You can also start broad Beans / fava beans indoors in peat pots a few weeks prior to transplanting outdoors. They frequently suffer from transplant shock - so hardening off is recommended , as well as taking care not to damage the root system when transplanting them.
WATER & FEED
Water broad beans regularly , just don't drown them . Keep the soil uniformly moist during flowering and pod formation. Plant broad beans in well-drained soil. They do not require additional feeding other than planting in fertile, well composted soil. Beans will provide their own nitrogen and excessive nitrogen will produce a lush foliage at the expense of the harvestable beans. Potassium and phosphorus fertilizers are best if you insist on adding additional fertilizer.
Good Companion plants: Bush beans, cucumbers, corn, celery, potatoes, Pole beans, sunflowers. Do not plant beans with onions, garlic, beets, or kohlrabi. Rotate lima beans to spaces where lettuce, squash, broccoli, Brussels sprouts, cabbage, cauliflower, spinach or collards have been grown in the preceding year or two.
See - Companion Planting
DISEASE & PEST PROBLEMS
They are susceptible to anthracnose, blight, and mosaic. Plant disease-resistant varieties. Keep the garden clean and free of debris. Avoid handling plants when they are wet so as not to spread fungal spores. If any of these have been a problem in the past plant disease resistant varieties. Proper sanitary practices are vital to the health of your garden. Proper sanitation can help to ensure disease-free and productive plants [See: ].
Common pests are aphids, beetles, leaf-hoppers , mites and cabbage moths - the cabbage moth worm will shelter inside broad beans, allegedly they don't harm the beans , but trying telling that to the guy who just found half a worm in his beans.
Broad beans can be eaten pod and all, harvested fresh and used like snap beans when the seeds are about the size of a pea. The most Common usage of broad beans is in growing to full maturity and used as shelled beans. Average maturation from from planting to harvest is about 80-85 days, this of course varies depending on the particular cultivar.
Storing and preserving. Un-shelled broad beans will keep in the refrigerator for about a week. They can also be dried, frozen or canned. Dried shelled broad beans can be stored for up to a year.