Beginner’s guide on growing green beans in your garden

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Green beans are a delicious and versatile vegetable that can be easily grown in your garden. Whether you’re a seasoned gardener or a complete beginner, green beans, also known as snap beans or string beans, are an excellent choice for your home garden. They’re low-maintenance, quick to grow, and can provide you with a bountiful harvest.

In this beginner’s guide on how to grow green beans, I’ll walk you through the essential steps to successfully grow green beans in your garden.

Green bean flowers with small green beans growing from the flowers
I love the flowers of green bean plants, here you can see the green beans are growing from the flowers of the plant

Choosing the right green bean varieties

Before you start planting green beans, it’s essential to choose the right variety for your garden. There are two primary types of green beans: bush varieties and pole varieties.

  1. Bush beans: These compact plants grow to a height of about 2 feet and don’t require any support. They’re a great option if you have limited space in your garden.
  2. Pole beans: These beans grow as climbing vines and can reach up to 8 feet in height. They require trellises or poles for support but often produce a larger yield.

Next to these two main varieties, there are several other different varieties of green beans. Popular types of green beans include: 

Contender

A bush bean with pods that are thick and tender and can be eaten fresh, canned, or frozen.

Provider

A bush type of green bean, a straight and stringless bean. Best for canning and freezing.

Kentucky Wonder

A pole bean with excellent yields. Best for fresh, freezing, or canning when the pods are still young.

Blue Lake

Found in both bush and pole varieties, with elongated, slender pods about 5.5 inches long. Great for canning, and freezing but also very tasty to eat fresh. The bush variety will reach approximately 2 feet in height, the pole variety will grow to almost 6.5 feet in height.

Depending on your garden space and personal preferences, you can choose the variety that suits you best.

A pot with two young green bean plants with three bamboo poles with string attached.
We’ve planted three green bean plants in one pot with bamboo poles last season

Planting green beans

​5 important things to consider:

  1. Green beans thrive in warm weather, so it’s crucial to plant them after the danger of frost in your area has passed. The ideal soil temperature for planting is around 60°F (15°C). This typically falls in late spring or early summer.
  2. Green beans prefer fertile, well-drained soil with a slightly acidic to neutral pH level (around 6.0 to 7.0). Prepare your garden bed by adding organic matter like compost to improve soil structure and fertility.
  3. Plant green bean seeds or seedlings about 1 inch deep and 2-4 inches apart for bush beans, and 3 inches apart for pole beans. Leave enough space between rows (18-24 inches) to provide good air circulation.
  4. Green beans love a spot in the full sun. It’s best to ensure that your green beans receive at least 6-8 hours of direct sunlight each day.
  5. You can plant seeds, or rather dry beans, directly in the soil or you start seeds indoors. If you started your seeds indoors you could have an earlier harvest. Transfer the young plants after the last frost date in your area.

Caring for green beans

Once you’ve planted your green beans, it’s essential to provide proper care to ensure a healthy and abundant harvest.

Watering

Proper watering is essential for the health and productivity of your green bean plants. Green beans prefer consistent moisture, but they are also sensitive to overwatering. Here are some tips on how to water green beans properly:

Green beans need regular moisture, but the frequency of watering will depend on factors like weather conditions, soil type, and the stage of plant growth. As a general rule, provide water when the top inch of soil starts to dry out. Typically, this may require watering 1 to 2 inches per week, depending on local weather conditions.

The 1 inch of water rule

Well I’ve read it before, water 1 inch per week, but how do you know when you’ve watered your garden 1 inch of water? I found a YouTube video of MIgardener where he explains the 1-inch watering rule. It is actually quite simple!

  • Measure the square feet of your garden bed;
  • use this converter
  • see directly how much water your garden bed needs per week.

When you know how much water your garden beds need, it is easiest to measure the number of gallons of water by using a dripping system in which you set the number of gallons per day or a watering can.

Water tips

  • It’s best to water your green beans in the morning, allowing the leaves and soil surface to dry during the day. Wet foliage during the evening or overnight can promote the growth of fungal diseases.
  • When you water, make sure to thoroughly saturate the soil to encourage deep root growth. Shallow, frequent watering can lead to shallow root systems, making the plants more vulnerable to drought.
  • Try to avoid watering the foliage directly, as this can lead to fungal diseases. Instead, aim to water the base of the plant. Drip irrigation or soaker hoses are excellent options for delivering water directly to the root zone.
  • Applying a layer of mulch around your green bean plants can help retain soil moisture, reduce evaporation, and prevent weeds. This will also help maintain a more consistent soil temperature.
  • Use your finger to check the moisture level of the soil. Insert your finger into the soil up to the second knuckle. If it feels dry at that depth, it’s time to water. Be careful not to let the soil become waterlogged, as this can lead to root rot.
  • Consider using a rain gauge to keep track of how much rain your garden receives. This will help you determine when and how much supplemental watering is needed.
  • Some green bean varieties are more drought-resistant than others. If you live in an area with water scarcity, it would be a good idea to choose a bean variety that is resistant to drought.
  • Pay extra attention to watering during the flowering and fruiting stages, as this is when the plants require more moisture to support the development of beans.
  • Improving your soil with organic matter like compost can help it retain moisture better, reducing the need for frequent watering.

In short

Remember that consistency is key when it comes to watering green beans. Maintaining the right moisture levels throughout the growing season will help ensure healthy and productive plants. By following these guidelines, you can provide your green beans with the optimal growing conditions they need to thrive.

Pest and disease management 

When learning how to grow green beans, you may encounter a variety of pests and diseases that can affect the health and yield of your plants. Here are some common pests and diseases associated with green beans:

Common pests

  1. Aphids are small, soft-bodied insects that feed on the sap of green bean plants, causing leaves to curl and turn yellow. They can also transmit plant viruses.
  2. Mexican bean beetles and bean leaf beetles are common pests of green beans. They eat the leaves, leaving behind a skeletonized appearance.
  3. Cutworms are moth larvae that cut through the stems of young green bean plants, causing them to topple over.
  4. Snails and slugs can feed on the tender young shoots and leaves of green bean plants, leaving irregular holes in the foliage.
  5. Whiteflies are small insects that feed on the undersides of green bean leaves, causing them to turn yellow and eventually die.
  6. Thrips are tiny insects that can damage green beans by feeding on the leaves, resulting in stippling and discoloration.
Two snails in a green bean plant next to a bamboo pole
We had a lot of snails in our garden last season, they loved the leaves of our green bean plants
a leaf which has been eaten away by snails
As you can see here..

Common diseases

  1. Rust is a fungal disease that appears as orange or rusty-colored spots on the undersides of green bean leaves. It can weaken the plant and reduce the yield of your harvest.
  2. Powdery mildew is a fungal disease that creates a white, powdery substance on the leaves of green bean plants. It can hinder photosynthesis and reduce plant health. Read more about powdery mildew in this article.
  3. Bacterial blight causes water-soaked yellow-to-brown lesions on green bean leaves and pods, leading to a reduced harvest. Watch out for these spots, this disease can spread rapidly in wet conditions.
  4. Anthracnose is a fungal disease that results in dark, sunken lesions on green bean pods, causing them to rot. It’s often a problem in humid and wet weather.
  5. Bean Common Mosaic Virus (BCMV) is a viral disease transmitted by aphids. It can cause mottling and curling of green bean leaves and reduce crop quality.
  6. Fusarium wilt is a soilborne fungal disease that can cause yellowing, wilting, and stunting of green bean plants. Infected plants may eventually die.

Preventing and managing pests and diseases

These prevention measurements apply to every plant in your vegetable garden:

  1. As with almost, if not every, vegetable plant, avoid planting green beans in the same location year after year. By doing so you will reduce the buildup of soilborne diseases.
  2. Adequate spacing between plants can promote air circulation, reducing the risk of fungal diseases.
  3. Monitoring: Regularly inspect your green bean plants for signs of pests and diseases. Early detection can help you take appropriate action.
  4. Cultural Practices: Practice good garden hygiene, such as removing and disposing of infected plant debris, and cleaning gardening tools to prevent the spread of diseases.
  5. Organic Pest Control: Consider using organic methods like neem oil, insecticidal soaps, and companion planting to deter pests.
  6. Disease-Resistant Varieties: Choose green bean varieties that are known for their resistance to common diseases.

Harvesting green beans

Green beans are typically ready for harvest about 50-60 days after planting, depending on the variety. Look for beans that are firm, crisp, and have a vibrant green color. Harvest regularly to encourage continuous production.

Green beans on a plant with wood chip mulch in the background and a hand holding the beans.
These beans are almost ready for harvest

Conclusion

Growing green beans in your garden can be a rewarding experience, especially for beginners. With minimal care and the right conditions, you can enjoy a bountiful harvest of fresh, nutritious green beans.

By choosing the right variety, providing proper care, and harvesting at the right time, you’ll be well on your way to enjoying the delicious taste of homegrown green beans in your meals. I hope you enjoyed this guide on how to grow green beans! So, now it’s time to get out there and start your green bean garden – your taste buds will thank you!

Green beans on a plant with wood chip mulch in the background and a hand holding the beans. A text overlay that says: "How to grow green beans in your garden".

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