Planting Beans
In general, beans are very sensitive to frost. (The exception is favas, which require a long, cool growing season; sow them at the same time you plant peas.) Most beans grow best in air temperatures of 70° to 80°F, and soil temperature should be at least 60°F. Soggy, cold soil will cause the seeds to rot. Beans need a sunny, well-drained area rich in organic matter. Lighten heavy soils with extra compost to help seedlings emerge.
Plan on roughly 10 to 15 bush bean plants or 3 to 5 hills of pole beans per person. A 100-foot row produces about 50 quarts of beans. Beans are self-pollinating, so you can grow cultivars side by side with little danger of cross-pollination. If you plan to save seed from your plants, though, separate cultivars by at least 50 feet.
Bean seeds usually show about 70 percent germination, and the seeds can remain viable for 3 years. Don't soak or presprout seeds before sowing. If you plant in an area where beans haven't grown before, help ensure that your bean crop will fix nitrogen in the soil by dusting the seeds with a bacterial inoculant powder for beans and peas (inoculants are available from garden centers and seed suppliers).
Plant your first crop of beans a week or two after the date of the last expected frost. Sow the seeds 1 inch deep in heavy soil and 1½ inches deep in light soil. Firm the earth over them to ensure soil contact.
Plant most bush cultivars 3 to 6 inches apart in rows 2 to 2½ feet apart. They produce the bulk of their crop over a 2-week period. For a continuous harvest, stagger plantings at 2-week intervals until about 2 months before the first killing frost is expected.
Bush beans usually don't need any support unless planted in a windy area. In that case, prop them up with brushy twigs or a strong cord around stakes set at the row ends or in each corner of the bed.
Pole beans are even more sensitive to cold than bush beans. They also take longer to mature (10 to 11 weeks), but they produce about three times the yield of bush beans in the same garden space and keep on bearing until the first frost. In the North, plant pole beans at the beginning of the season—usually in May. If your area has longer seasons, you may be able to harvest two crops. To calculate if two crops are possible, note the number of days to maturity for a particular cultivar, and count back from fall frost date, adding a week or so to be on the safe side.
Plant pole beans in single rows 3 to 4 feet apart or double rows spaced 1 foot apart. Sow seeds 2 inches deep and 10 inches apart. Provide a trellis or other vertical support at planting or as soon as the first two leaves of the seedlings open. Planting pole beans around a tepee support is a fun project to try if you're gardening with children, but it will be more difficult to harvest the beans than from a simple
Plan on roughly 10 to 15 bush bean plants or 3 to 5 hills of pole beans per person. A 100-foot row produces about 50 quarts of beans. Beans are self-pollinating, so you can grow cultivars side by side with little danger of cross-pollination. If you plan to save seed from your plants, though, separate cultivars by at least 50 feet.
Bean seeds usually show about 70 percent germination, and the seeds can remain viable for 3 years. Don't soak or presprout seeds before sowing. If you plant in an area where beans haven't grown before, help ensure that your bean crop will fix nitrogen in the soil by dusting the seeds with a bacterial inoculant powder for beans and peas (inoculants are available from garden centers and seed suppliers).
Plant your first crop of beans a week or two after the date of the last expected frost. Sow the seeds 1 inch deep in heavy soil and 1½ inches deep in light soil. Firm the earth over them to ensure soil contact.
Plant most bush cultivars 3 to 6 inches apart in rows 2 to 2½ feet apart. They produce the bulk of their crop over a 2-week period. For a continuous harvest, stagger plantings at 2-week intervals until about 2 months before the first killing frost is expected.
Bush beans usually don't need any support unless planted in a windy area. In that case, prop them up with brushy twigs or a strong cord around stakes set at the row ends or in each corner of the bed.
Pole beans are even more sensitive to cold than bush beans. They also take longer to mature (10 to 11 weeks), but they produce about three times the yield of bush beans in the same garden space and keep on bearing until the first frost. In the North, plant pole beans at the beginning of the season—usually in May. If your area has longer seasons, you may be able to harvest two crops. To calculate if two crops are possible, note the number of days to maturity for a particular cultivar, and count back from fall frost date, adding a week or so to be on the safe side.
Plant pole beans in single rows 3 to 4 feet apart or double rows spaced 1 foot apart. Sow seeds 2 inches deep and 10 inches apart. Provide a trellis or other vertical support at planting or as soon as the first two leaves of the seedlings open. Planting pole beans around a tepee support is a fun project to try if you're gardening with children, but it will be more difficult to harvest the beans than from a simple
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Growing Guidelines
Bush beans germinate in about 7 days, pole beans in about 14. It's important to maintain even soil moisture during this period and also when the plants are about to blossom. If the soil dries out at these times, your harvest may be drastically reduced. Water deeply at least once a week when there is no rain, being careful not to hose off any of the blossoms on bush beans when you water. Apply several inches of mulch (after the seedlings emerge) to conserve moisture, reduce weeds, and keep the soil cool during hot spells (high heat can cause blossoms to drop off).
Beans generally don't need extra nitrogen for good growth because the beneficial bacteria that live in nodules on bean roots help to provide nitrogen for the plants. To speed up growth, give beans—particularly long-bearing pole beans or heavy-feeding limas—a midseason side-dressing of compost or kelp extract solution.
Beans generally don't need extra nitrogen for good growth because the beneficial bacteria that live in nodules on bean roots help to provide nitrogen for the plants. To speed up growth, give beans—particularly long-bearing pole beans or heavy-feeding limas—a midseason side-dressing of compost or kelp extract solution.
Spider mites are tiny red or yellow creatures that generally live on the undersides of leaves; their feeding causes yellow stippling on leaf surfaces. Discourage spider mites with garlic or soap sprays. Using a strong blast of water from the hose will wash mites off plants, but avoid this method at blossom time or you may knock the blossoms off.
To minimize disease problems, buy disease-free seeds and disease-resistant cultivars, rotate bean crops every one or two years, and space plants far enough apart to provide airflow. Don't harvest or cultivate beans when the foliage is wet, or you may spread disease spores. Here are some common diseases to watch for:
To minimize disease problems, buy disease-free seeds and disease-resistant cultivars, rotate bean crops every one or two years, and space plants far enough apart to provide airflow. Don't harvest or cultivate beans when the foliage is wet, or you may spread disease spores. Here are some common diseases to watch for:
- Anthracnose causes black, egg-shaped, sunken cankers on pods, stems, and seeds and black marks on leaf veins.
- Bacterial blight starts with large, brown blotches on the leaves; the foliage may fall off and the plant will die.
- Mosaic symptoms include yellow leaves and stunted growth. Control aphids and cucumber beetles, which spread the virus.
- Rust causes reddish brown spots on leaves, stems, and pods.
- Downy mildew causes fuzzy white patches on pods, especially of lima beans.
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Harvesting Beans
Pick green beans when they are pencil size, tender, and before the seeds inside form bumps on the pod. Harvest almost daily to encourage production; if you allow pods to ripen fully, the plants will stop producing and die. Pulling directly on the pods may uproot the plants. Instead, pinch off bush beans using your thumbnail and fingers; use scissors on pole and runner beans. Also cut off and discard any overly mature beans you missed in previous pickings. Serve, freeze, can, or pickle the beans the day you harvest them to preserve the fresh, delicious, homegrown flavor.
Pick shell beans for fresh eating when the pods are plump but still tender. The more you pick, the more the vines will produce. Consume or preserve them as soon as possible. Unshelled, both they and green beans will keep for up to a week in the refrigerator.
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To dry beans, leave the pods on the plants until they are brown and the seeds rattle inside them. Seeds should be so hard you can barely dent them with your teeth. If the pods have yellowed and a rainy spell is forecast, cut the plants off near the ground and hang them upside down indoors to dry. Put the shelled beans in airtight, lidded containers. Add a packet of dried milk to absorb moisture, and store the beans in a cool, dry place. They will keep for 10 to 12 months.
Related: 6 Healthiest Beans You Can Eat
Pick shell beans for fresh eating when the pods are plump but still tender. The more you pick, the more the vines will produce. Consume or preserve them as soon as possible. Unshelled, both they and green beans will keep for up to a week in the refrigerator.
(Sign up for our FREE newsletter to get clever kitchen tricks, gardening secrets, and more delivered straight to your inbox!)
To dry beans, leave the pods on the plants until they are brown and the seeds rattle inside them. Seeds should be so hard you can barely dent them with your teeth. If the pods have yellowed and a rainy spell is forecast, cut the plants off near the ground and hang them upside down indoors to dry. Put the shelled beans in airtight, lidded containers. Add a packet of dried milk to absorb moisture, and store the beans in a cool, dry place. They will keep for 10 to 12 months.
Related: 6 Healthiest Beans You Can Eat
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Types Of Beans
All beans belong to the legume family. Snap and lima beans belong to the genus Phaseolus, while mung, adzuki, garbanzo, fava, and others belong to different genera. In general, there are two main bean types: shell beans, grown for their protein-rich seeds, which are eaten both fresh and dried; and snap beans, cultivated mainly for their pods.
The two groups are further divided according to growth habit. Bush types are generally self-supporting. Pole beans have twining vines that require support from stakes, strings, wires, or trellises. Runner beans are similar to pole beans, although runners need cooler growing conditions. Half-runners, popular in the South, fall somewhere in between pole and bush beans.
Adzuki beans, which come from Japan, are extra rich in protein. The small plants produce long, thin pods that are eaten like snap beans. When mature at 90 days, they contain 7 to 10 small, nutty-tasting, maroon-colored beans that are tasty fresh or dried.
Black beans, also called black turtle beans, have jet-black seeds and need approximately 3 months of warm, frost-free days to mature. The dried beans are popular for soups and stews. Most are sprawling, half-runner-type plants, but some cultivars, like 'Midnight Black Turtle', have more upright growth habits.
Black-eyed peas, also called cowpeas or southern peas, are cultivated like beans. They need long summers with temperatures averaging between 60° and 70°F. Use fresh pods like snap beans, shell and cook the pods and seeds together, or use them like other dried beans.
Fava beans, also known as broad, horse, or cattle beans, are one of the world's oldest cultivated foods. They are second only to soybeans as a source of vegetable protein, but they're much more common as a garden crop in Europe than in the United States. You won't find a wide range of varieties in most seed catalogs, unless you choose a seed company that specializes in Italian vegetables. Unlike other beans, favas thrive in cold, damp weather. They take about 75 days to mature. Fava beans need to be cooked and shucked from their shells and the individual seed skins peeled off before eating.
Garbanzo beans, also called chickpeas, produce bushy plants that need 65 to 100 warm days. When dried, the nutty-tasting beans are good baked or cooked and chilled for use in salads.
Great Northern white beans are most popular dried and eaten in baked dishes. In short-season areas, you can harvest and eat them as fresh shell beans in only 65 days. Bush-type Great Northerns are extremely productive.
Horticultural beans are also known as shell, wren's egg, bird's egg, speckled cranberry, or October beans. Both pole and bush types produce a big harvest in a small space and mature in 65 to 70 days. Use the very young, colorful, mottled pods like snap beans, or dry the mature, nutty, red-speckled seeds.
Kidney beans require 100 days to mature but are very easy to grow. Use these red, hearty-tasting dried seeds in chili, soups, stews, and salads.
Lima beans, including types called butter beans or butter peas, are highly sensitive to cool weather; plant them well after the first frost. Bush types take 60 to 75 days to mature. Pole types require 90 to 130 days, but the vines grow quickly and up to 12 feet long. Limas are usually green, but there are also some speckled types. Use either fresh or dried in soups, stews, and casseroles.
Mung beans need 90 frost-free days to produce long, thin, hairy, and edible pods on bushy 3-foot plants. Eat the small, yellow seeds fresh, dried, or as bean sprouts.
Pinto beans need 90 to 100 days to mature. These large, strong plants take up a lot of space if not trained on poles or trellises. Use fresh like a snap bean, or dry the seeds.
Scarlet runner beans produce beautiful climbing vines with scarlet flowers. The beans mature in about 70 days. Cook the green, rough-looking pods when they are very young; use the black-and red-speckled seeds fresh or dried.
Snap beans are also known as green beans. While many growers still refer to snap beans as string beans, a stringless cultivar was developed in the 1890s, and few cultivars today have to be stripped of their strings before you eat them. Most cultivars mature in 45 to 60 days. This group also includes the flavorful haricots verts, also called filet beans, and the mild wax or yellow beans. For something unusual, try the yard-long asparagus bean. Its rampant vines can produce 3-foot-long pods, though they taste best when 12 to 15 inches long. Once the pods have passed their tender stage, you can shell them, too.
Soldier beans, whose vinelike plants need plenty of room to sprawl, are best suited to cool, dry climates. The white, oval-shaped beans mature in around 85 days. Try the dried seeds in baked dishes.
Garden cultivars of soybeans, also called edamame, are ready to harvest when the pods are plump and green. Boil the pods, then shell and eat the seeds. Or, you can let the pods mature and harvest as dry beans. Try 'Early Hakucho', 'Butterbean', and other varieties. The bush-type plants need a 3-month growing season but are tolerant of cool weather.
The two groups are further divided according to growth habit. Bush types are generally self-supporting. Pole beans have twining vines that require support from stakes, strings, wires, or trellises. Runner beans are similar to pole beans, although runners need cooler growing conditions. Half-runners, popular in the South, fall somewhere in between pole and bush beans.
Adzuki beans, which come from Japan, are extra rich in protein. The small plants produce long, thin pods that are eaten like snap beans. When mature at 90 days, they contain 7 to 10 small, nutty-tasting, maroon-colored beans that are tasty fresh or dried.
Black beans, also called black turtle beans, have jet-black seeds and need approximately 3 months of warm, frost-free days to mature. The dried beans are popular for soups and stews. Most are sprawling, half-runner-type plants, but some cultivars, like 'Midnight Black Turtle', have more upright growth habits.
Black-eyed peas, also called cowpeas or southern peas, are cultivated like beans. They need long summers with temperatures averaging between 60° and 70°F. Use fresh pods like snap beans, shell and cook the pods and seeds together, or use them like other dried beans.
Fava beans, also known as broad, horse, or cattle beans, are one of the world's oldest cultivated foods. They are second only to soybeans as a source of vegetable protein, but they're much more common as a garden crop in Europe than in the United States. You won't find a wide range of varieties in most seed catalogs, unless you choose a seed company that specializes in Italian vegetables. Unlike other beans, favas thrive in cold, damp weather. They take about 75 days to mature. Fava beans need to be cooked and shucked from their shells and the individual seed skins peeled off before eating.
Garbanzo beans, also called chickpeas, produce bushy plants that need 65 to 100 warm days. When dried, the nutty-tasting beans are good baked or cooked and chilled for use in salads.
Great Northern white beans are most popular dried and eaten in baked dishes. In short-season areas, you can harvest and eat them as fresh shell beans in only 65 days. Bush-type Great Northerns are extremely productive.
Horticultural beans are also known as shell, wren's egg, bird's egg, speckled cranberry, or October beans. Both pole and bush types produce a big harvest in a small space and mature in 65 to 70 days. Use the very young, colorful, mottled pods like snap beans, or dry the mature, nutty, red-speckled seeds.
Kidney beans require 100 days to mature but are very easy to grow. Use these red, hearty-tasting dried seeds in chili, soups, stews, and salads.
Lima beans, including types called butter beans or butter peas, are highly sensitive to cool weather; plant them well after the first frost. Bush types take 60 to 75 days to mature. Pole types require 90 to 130 days, but the vines grow quickly and up to 12 feet long. Limas are usually green, but there are also some speckled types. Use either fresh or dried in soups, stews, and casseroles.
Mung beans need 90 frost-free days to produce long, thin, hairy, and edible pods on bushy 3-foot plants. Eat the small, yellow seeds fresh, dried, or as bean sprouts.
Pinto beans need 90 to 100 days to mature. These large, strong plants take up a lot of space if not trained on poles or trellises. Use fresh like a snap bean, or dry the seeds.
Scarlet runner beans produce beautiful climbing vines with scarlet flowers. The beans mature in about 70 days. Cook the green, rough-looking pods when they are very young; use the black-and red-speckled seeds fresh or dried.
Snap beans are also known as green beans. While many growers still refer to snap beans as string beans, a stringless cultivar was developed in the 1890s, and few cultivars today have to be stripped of their strings before you eat them. Most cultivars mature in 45 to 60 days. This group also includes the flavorful haricots verts, also called filet beans, and the mild wax or yellow beans. For something unusual, try the yard-long asparagus bean. Its rampant vines can produce 3-foot-long pods, though they taste best when 12 to 15 inches long. Once the pods have passed their tender stage, you can shell them, too.
Soldier beans, whose vinelike plants need plenty of room to sprawl, are best suited to cool, dry climates. The white, oval-shaped beans mature in around 85 days. Try the dried seeds in baked dishes.
Garden cultivars of soybeans, also called edamame, are ready to harvest when the pods are plump and green. Boil the pods, then shell and eat the seeds. Or, you can let the pods mature and harvest as dry beans. Try 'Early Hakucho', 'Butterbean', and other varieties. The bush-type plants need a 3-month growing season but are tolerant of cool weather.
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