How To Keep Hostas Healthy All Summer Long: Master Guide

How To Keep Hostas Healthy All Summer Long
16 min reading time

Hostas are a popular choice for gardeners looking to add some lush greenery to their outdoor space. While hostas are known for their hardiness and resilience, they still require proper care and maintenance to thrive, especially during the summer months. In this article, we’ll explore how to keep hostas healthy all summer long.

Key Takeaways:

  • Proper care and maintenance are essential for lush and healthy hostas.
  • Watering, protecting from sun exposure, preventing diseases, fertilizing, mulching, weed control, pruning and dividing, pest control, winterizing, and container gardening are all critical aspects of summer hosta maintenance.
  • By following these tips and techniques, you can ensure your hostas remain vibrant and beautiful throughout the summer season.

How To Keep Hostas Healthy All Summer Long: Protecting Hostas from Sun

Hostas thrive in shade, but during the summer months, they need protection from too much sun exposure. Direct sunlight can scorch hosta leaves, causing them to turn brown and wilt. Here are some tips for protecting your hostas from the sun during the summer:

Providing Shade

The easiest way to protect your hostas from the sun is to provide them with shade. You can achieve this by planting them in areas that receive dappled shade or by using shade cloth to cover them. Another option is to plant hostas near taller plants or trees that provide natural shade.

Using Mulch

Mulch can help to maintain soil moisture and prevent the temperature from getting too hot around your hostas. Apply a layer of organic mulch around the base of your hostas, ensuring that it doesn’t touch the leaves. This will provide insulation and keep your hostas cool during hot summer days.

Watering Properly

Hostas need consistent moisture to thrive, especially during the summer. Water your hostas deeply and regularly, making sure the water reaches the roots. Avoid spraying water on the leaves, as this can magnify the sun’s rays and burn them.

By following these tips, you can keep your hostas healthy and beautiful throughout the summer.

Watering Hostas in Summer

How To Keep Hostas Healthy All Summer Long

Watering is one of the vital elements to keep your hostas healthy during summer. Hostas require sufficient water to thrive, especially during dry weather. Inadequate water can cause the leaves to wilt and turn brown, and if not remedied, the plant may eventually die. So, how do you water your hostas in summer to maintain their health?

1. Water hostas deeply once a week.

During hot weather, it’s crucial to water hostas deeply once a week to avoid dehydration. Watering the plant daily but lightly deprives the plant of the necessary moisture. Instead of watering hostas daily, water them deeply but less frequently. This way, the roots will grow deeper to access moisture, making the plant stronger and more resilient to drought.

2. Water in the early morning or late evening.

The ideal time to water hostas is early in the morning or late in the evening when the sun is down. Watering during the day causes the water to evaporate quickly, leaving the plant water-deprived. Watering when the sun is less direct helps to provide the plant with enough water to last through the day without drying out.

Watering Hostas in Containers

Hostas grown in containers need extra care for their water needs. The soil in containers tends to dry up faster than the ground soil, making it challenging to maintain moisture.

1. Check the soil moisture level regularly.

Use your finger to check the soil moisture level of container-grown hostas regularly. If the soil is dry, it’s time to water. You can also use a moisture meter to measure the soil’s moisture level.

2. Water the plant when the soil feels dry.

Water the plant when the soil feels dry to the touch. Water the plant slowly, allowing the soil to absorb the water gradually. Be careful not to over-water the container, causing water to disperse through the drainage holes.

Watering your hostas deeply, appropriately and at the right time will go a long way to maintaining healthy hostas all summer long.

Preventing Hosta Diseases

Maintaining healthy hostas during the summer months requires attention to disease prevention. By following proper sanitation practices, identifying symptoms early, and using organic treatments, you can keep your hostas healthy and lush.


The first step in disease prevention is proper sanitation. Keep the area around your hostas clean and free of debris. Remove any dead or diseased leaves as soon as you notice them to prevent the spread of disease. Disinfect your gardening tools regularly, especially if you have been working with infected plants.

Identifying Symptoms

It is important to identify symptoms of disease early in order to treat them effectively. Look for spots, discoloration, or wilting leaves. Hostas can be affected by various diseases such as leaf spot, crown rot, and powdery mildew. If you notice any signs of disease, take action promptly.

Organic Treatments

Using organic treatments is the best way to prevent hosta diseases without harming the environment. Neem oil is a natural pesticide that can be used to control various pests that can spread disease. Copper-based fungicides can be used to control fungal infections. Additionally, spraying a mixture of water and baking soda on your hostas can prevent fungal diseases from spreading.

By following these disease prevention tips, you can maintain healthy hostas all summer long. Keep your garden clean, identify symptoms early, and use organic treatments to keep your hostas disease-free.

Fertilizing Hostas in Summer

Fertilizing hostas in summer can be a game-changer for their health and appearance. By providing the necessary nutrients, you can help your hostas thrive in the heat and humidity. Here are some hosta care tips for fertilizing in summer:

  • Timing is everything: The best time to fertilize your hostas is in early spring or late fall. However, if you missed those windows, you can still fertilize them in summer. Just make sure to do it early in the season, before the heat becomes too intense.
  • Use the right fertilizer: Hostas prefer a balanced fertilizer that contains equal amounts of nitrogen, phosphorus, and potassium. Look for a slow-release fertilizer that will release nutrients over time, rather than all at once.
  • Apply the fertilizer correctly: Sprinkle the fertilizer evenly around the base of the plant, and then water it in thoroughly. Avoid getting the fertilizer directly on the leaves, as this can cause burning.
  • Repeat as needed: Depending on the type of fertilizer you use, you may need to apply it once a month or every few months. Follow the instructions on the package and be sure not to over-fertilize, which can lead to salt buildup in the soil.

By fertilizing your hostas in summer, you can help them grow bigger, stronger, and more beautiful than ever. Just be sure to follow these hosta care tips to ensure you do it right!

Mulching Hostas for Summer

One of the key components of summer hosta care is mulching. Mulch helps to retain moisture in the soil, control soil temperature, and prevent weed growth that can compete with hostas for nutrients and water. Here are some tips for mulching hostas in the summer.

Choosing the Right Mulch

When selecting a mulch for hostas, it’s important to choose a material that will not compact too much and will allow water to penetrate through to the soil. Good options include shredded bark, compost, or pine needles. Avoid using materials like grass clippings or hay, which can create a mat that doesn’t allow for proper water flow.

Applying Mulch

Apply a layer of mulch around the base of each hosta plant, being careful not to cover the crown of the plant, which can rot if it’s too wet. The mulch should be around 2-3 inches deep and extend out about 12-18 inches from the base of the plant. Make sure the mulch is not touching the plant stem, as this can also lead to rotting.

Maintaining Mulch

Throughout the summer, check the mulch regularly to make sure it’s still in place and hasn’t blown away or washed away. If the mulch has thinned out or has been shifted, add more to keep the desired depth.

Mulching hostas in the summer is a simple and effective way to maintain healthy plants. With the right material and proper application, mulch can help hostas thrive in the heat of summer.

Controlling Weeds Around Hostas

Weeds can be a common problem for hostas during the summer months, as they compete with the plants for nutrients and moisture. To ensure your hostas stay healthy and vibrant, it is important to control weeds around them. Here are some strategies for weed control:

  • Mulching: One of the easiest ways to prevent weeds from growing around your hostas is by mulching. A layer of organic mulch such as shredded leaves or bark can help suppress weeds and retain moisture.
  • Hand-pulling: Another option is to pull weeds by hand. This method is most effective when the soil is moist and the weeds are young. Be sure to remove the entire root system to prevent regrowth.
  • Organic herbicides: If you prefer a more hands-off approach, there are several organic herbicides available that can be effective at controlling weeds without harming your hostas.

To keep your hostas looking their best, it’s important to stay on top of weed control throughout the summer season. A little bit of prevention can go a long way in maintaining a healthy and vibrant garden.

Pruning and Dividing Hostas

How To Keep Hostas Healthy All Summer Long

Proper pruning and dividing of hostas during the summer months are essential in maintaining healthy plants and promoting vigorous growth. Hostas tend to grow quickly, and overcrowding can occur, leading to reduced health and vitality. Here are some tips on how to prune and divide hostas:

Pruning Hostas

Pruning is the process of removing dead or damaged leaves and flower stalks to encourage new growth. It also helps to maintain the plant’s shape and prevent overcrowding. Pruning should be done in the early summer, just before the plant reaches its maximum size.

The best way to prune hostas is to use a pair of sharp, clean scissors or pruning shears. Cut the leaves and flower stalks as close to the base of the plant as possible. Be sure not to remove more than one-third of the total plant foliage at any time, as this can stress the plant and affect its growth.

Dividing Hostas

Dividing hostas involves separating the plant into smaller sections and planting them in separate locations. This process is necessary when the hosta becomes too large for its current location or begins to show signs of overcrowding.

Dividing should be done in the early summer when the plant is actively growing. Water the plants thoroughly the day before dividing to make the roots easier to work with. To divide the plant, dig around the base of the plant with a spade and lift it from the ground. Carefully separate the root ball into sections, using a clean, sharp knife or pruning shears.

Each section should have at least two to three shoots and a healthy root system. Replant the divided sections in a new, well-prepared location. It is essential to keep the newly divided plants well-watered and shaded for several weeks, allowing them time to establish their new roots.

By following these pruning and dividing tips, you can keep your hostas healthy and thriving throughout the summer season and beyond.

Pest Control for Hostas

Just like any other plant, hostas are vulnerable to attack by various pests during the summer months. Pests like slugs, snails, and aphids can cause significant damage to hostas if left unchecked. This section will provide tips on how to control pests and maintain healthy hostas.

Identifying Pests

The first step in controlling pests is to identify them. Common pests that attack hostas include slugs, snails, aphids, and spider mites. Slugs and snails leave slime trails on the leaves, while aphids and spider mites can cause discoloration and distortion of the leaves. It’s essential to identify the type of pest attacking your hostas before proceeding with control measures.

Natural Pest Control Remedies

One of the best ways to control pests is by using natural remedies. For example, diatomaceous earth is an effective pest control measure that can be applied to the soil around hostas. It works by dehydrating the pests, preventing them from causing more damage. Other natural pest control remedies include garlic spray, neem oil, and insecticidal soap.

Insecticides as a Last Resort

If natural remedies don’t work, you may need to resort to insecticides. However, it’s essential to use them as a last resort since they can harm beneficial insects like bees and butterflies. Always read the label carefully before using any insecticide, and follow the instructions carefully.

By implementing these pest control measures, you can maintain healthy hostas throughout the summer months.

Winterizing Hostas

As summer comes to an end, it is important to prepare your hostas for the upcoming winter season. Winterizing hostas will ensure that they survive the cold weather and come back strong in the spring. Here are some tips for summer to fall hosta care and winterizing hostas:

Cut Back Foliage

In late summer or early fall, when the leaves on your hostas start turning yellow and brown, it is time to cut back the foliage. Use sharp scissors or pruning shears to trim the leaves back to approximately 2-3 inches above the soil line. This will help prevent any diseases or pests from overwintering in the debris.


After cutting back the foliage, it is important to mulch your hostas to protect them from freezing temperatures. Use a layer of organic mulch, such as shredded leaves or straw, to cover the soil around the base of the plant. This will help insulate the roots and regulate soil temperature during the winter.

Winter Protection

If you live in an area with harsh winter weather, it may be necessary to provide additional protection for your hostas. You can use burlap or frost cloth to wrap the plants and secure with rope or twine. This will help prevent any frost damage to the leaves and buds.

By following these summer to fall hosta care tips and winterizing hostas, you can ensure that your hostas survive the winter and come back healthy in the spring.

Container Gardening with Hostas

Hostas are versatile plants that can thrive both in the ground and in containers. Container gardening with hostas is a great way to add unique greenery to porches, balconies, and patios. Plus, it allows for greater control over soil quality, water retention, and exposure to the elements.

When choosing containers for hostas, look for ones that are at least 14 inches in diameter and have drainage holes to prevent root rot. Use a high-quality potting mix with perlite or vermiculite to ensure good drainage and aeration. Avoid overwatering, as container-hostas can quickly drown.

Hostas in containers will require more frequent watering than those in the ground. Water thoroughly when the top inch of soil feels dry to the touch. In hot weather, container-hostas may require watering twice a day. Consider placing containers in a shaded area to prevent excessive evaporation and sunburn on the leaves.

Fertilizing container-hostas is essential to maintain their health and encourage growth. Use a slow-release fertilizer every two months or a liquid fertilizer every two weeks for the best results. Avoid fertilizers that are high in nitrogen, as this can promote leaf growth at the expense of root development.

Container-hostas should also be mulched to retain moisture and protect against temperature fluctuations. Apply a layer of organic mulch around the base of the plant, but avoid covering the crown, as this can lead to rot.

Finally, consider the layout of your container garden. Hostas pair well with ferns and other shade-loving plants, but they also make a statement when planted alone. Experiment with different textures, heights, and colors to create a unique and beautiful container garden that will thrive with proper care.

By following these container gardening tips, you can enjoy healthy and vibrant hostas all summer long.


By following the tips and techniques provided in this article, you can master the art of keeping your hostas healthy all summer long. Proper care and maintenance, including watering, protecting from sun exposure, preventing diseases, regular fertilizing, mulching, weed control, pruning and dividing, pest control, and winterizing, are essential for achieving lush and beautiful hostas.

Remember, hostas are hardy plants that can thrive in many different conditions, but they still require specific care to reach their full potential. So, take the time to care for your hostas this summer and enjoy the beautiful foliage they provide throughout the season.


How often should I water my hostas in the summer?

Hostas should be watered deeply once a week during the summer, allowing the soil to dry slightly between waterings.

How can I protect my hostas from excessive sun exposure?

Providing shade for hostas during the hottest parts of the day and using shade cloth or umbrellas can help protect them from sunburn.

What are some common diseases that can affect hostas in the summer?

Hostas are susceptible to diseases such as leaf spot and crown rot. Proper sanitation, removing infected leaves, and using organic treatments can help prevent these diseases.

When should I fertilize my hostas during the summer?

It is best to fertilize hostas in early spring and again in mid-summer. Use a slow-release balanced fertilizer to provide the necessary nutrients.

How can mulching benefit hostas during the summer?

Mulching helps retain moisture, control temperature, and suppress weed growth around hostas. Apply a layer of organic mulch around the base of the plants.

What are some effective ways to control weeds around hostas?

Mulching is an effective method to control weeds. Regularly hand-pulling weeds and using organic herbicides can also help keep weeds at bay.

Is pruning and dividing hostas necessary during the summer?

Yes, pruning and dividing hostas during the summer promotes healthier growth and prevents overcrowding. Prune off any damaged or yellowing leaves and divide overcrowded clumps.

How can I control pests that damage hostas?

Common pests that affect hostas include slugs, snails, and aphids. Use natural remedies such as diatomaceous earth and beer traps. In extreme cases, consider using insecticides as a last resort.

What should I do to winterize my hostas?

To prepare hostas for winter, cut back the foliage, apply a thick layer of mulch around the base of the plants, and consider providing additional winter protection like burlap or plant covers.

Can I grow hostas in containers during the summer?

Yes, hostas can be grown in containers. Choose a large container with good drainage, use well-draining potting soil, and water regularly to keep the soil consistently moist.

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