A light dusting of snow on a hellebore flower

What to Do With Hellebores in Summer?

As the vibrant blooms of spring transition into the warmer days of summer, it’s crucial to adapt your care routine to ensure the continued health and vitality of your hellebores. These remarkable perennial plants, also known as Lenten roses, deserve proper attention during the summer months. In this comprehensive guide, we’ll explore the essential steps for caring for hellebores in the summer. By following these practices, you can promote new growth and prepare your hellebores for the coming seasons, ensuring a beautiful garden year after year.

Deadheading and Pruning

During the summer, hellebores may have spent flowers that can affect their overall appearance and seed production. Deadheading, the process of removing these faded blooms, is a valuable practice for several reasons:

  • Encouraging New Growth: Deadheading stimulates hellebores to redirect their energy towards producing new foliage and potentially additional late-summer blooms.
  • Preventing Self-Seeding: By removing spent flowers, you can prevent hellebores from self-seeding and spreading uncontrollably, especially if you have hybrid varieties.

Summer is also an excellent time for light pruning of hellebores. This involves tidying up the plant by removing any damaged, yellowed, or diseased leaves. Be sure to make clean cuts to maintain the plant’s shape and aesthetics while keeping it free from potential diseases.

Watering and Soil Maintenance

Proper watering is critical for hellebores during the summer months. Here’s what you need to consider:

  • Consistent Moisture: Hellebores prefer consistently moist but well-draining soil. In summer, it’s essential to keep the soil consistently damp, but avoid overwatering, which can lead to root rot.
  • Mulching: Applying a layer of organic mulch around the base of your hellebores helps maintain soil moisture and regulates temperature. This is particularly valuable in regions with hot summers.
  • Soil Amendment: Consider amending the soil with organic matter to enhance its fertility and drainage. A well-draining, humus-rich soil provides the ideal conditions for hellebores.
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By maintaining proper watering practices and ensuring your hellebores have the right soil conditions, you can keep these remarkable plants thriving through the summer, setting the stage for a successful transition into the fall and beyond.

Fertilization and Feeding

Fertilizing your hellebores during the summer is an essential step to support their growth and prepare them for the upcoming seasons. Here’s what you should know:

  • Balanced Fertilizer: Apply a balanced, slow-release fertilizer with an N-P-K (nitrogen-phosphorus-potassium) ratio of around 10-10-10 or similar. This provides hellebores with the necessary nutrients for healthy growth without overstimulating them.
  • Application Timing: It’s best to apply fertilizer in early summer, just after the spring flowering period. This allows the plants to absorb the nutrients and prepare for the following year’s bloom.
  • Organic Alternatives: If you prefer organic options, consider using well-rotted compost or a balanced organic fertilizer. Organic materials enrich the soil and enhance its long-term fertility.

Pest and Disease Management

While hellebores are generally hardy, they can still be susceptible to pests and diseases during the summer. Here’s how to manage these issues:

  • Common Pests: Keep an eye out for common summer pests, such as aphids and slugs. Regularly inspect your hellebores and, if needed, use appropriate pest control methods, including natural predators or organic treatments.
  • Disease Prevention: Hellebores may develop issues like black spot or leaf spot during hot, humid weather. Ensure good air circulation around the plants, avoid overhead watering, and remove any affected leaves to prevent the spread of disease.
  • Powdery Mildew: Hellebores can also be prone to powdery mildew in some regions. Choose mildew-resistant varieties if this is a recurring issue in your garden.
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Propagation (Optional)

While hellebores are primarily propagated in late winter through early spring, summer can offer an opportunity for seed collection if you wish to propagate your hellebores. Here’s a basic outline of the process:

  • Seed Collection: In late spring to early summer, hellebore seed pods will ripen. Collect the seeds once the pods split open and sow them in containers. Keep them in a shaded area until they develop into young plants, which can be transplanted in the fall.

While propagation is optional and might be a longer-term endeavor, it can be a rewarding way to expand your hellebore collection and share these beautiful plants with others.

By following these guidelines for fertilization, pest and disease management, and optional propagation, you can ensure that your hellebores remain healthy, vibrant, and resilient throughout the summer, setting the stage for their future blooming seasons.

Preparing for Fall and Beyond

As summer transitions into fall, it’s essential to continue caring for your hellebores. Here’s what to keep in mind as you prepare your hellebores for the upcoming seasons:

  • Late Summer Pruning: In late summer, consider a final pruning to remove any remaining spent blooms and tidy up the plant. This will encourage a neat appearance and redirect energy for future growth.
  • Fertilization for Fall: Apply a light, balanced fertilizer in late summer or early fall to provide hellebores with the nutrients they need to prepare for winter and next year’s flowering.
  • Mulching: As fall approaches, consider adding a fresh layer of mulch to protect the soil and roots from harsh winter conditions and retain moisture.
  • Winter Preparations: In colder climates, be prepared to protect your hellebores from extreme cold by covering them with mulch or providing a light winter wrap. This extra care will help them thrive during the winter and bloom again in spring.
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Frequently Asked Questions

Can I divide hellebores in the summer?

It’s generally best to divide hellebores in late winter or early spring when they are still dormant. Summer can be stressful for the plants, so avoid division during this season.

What should I do if my hellebores are not blooming in the summer?

Lack of summer blooms is normal for many hellebore varieties. They typically bloom in late winter to early spring. Focus on their overall health, and they should reward you with beautiful blooms during the appropriate season.

Are hellebores toxic to pets or humans?

Hellebores contain toxic compounds. Be cautious and keep them out of reach of pets and children. Avoid ingesting any part of the plant and wear gloves when handling.


Caring for hellebores during the summer is an essential part of ensuring their health and beauty throughout the year. By following the appropriate care practices, from deadheading and pruning to proper watering and fertilization, you can maintain the well-being of your hellebores and prepare them for the fall and the next blooming season. Whether you are a seasoned gardener or a beginner, these steps will help you enjoy the enduring elegance of your hellebores year after year.

About the author

Victoria Nelson

Victoria Nelson is a passionate gardener with over a decade of experience in horticulture and sustainable gardening practices. With a degree in Horticulture, she has a deep understanding of plants, garden design, and eco-friendly gardening techniques. Victoria aims to inspire and educate gardeners of all skill levels through her engaging articles, offering practical advice drawn from her own experiences. She believes in creating beautiful, biodiverse gardens that support local wildlife. When not writing or gardening, Victoria enjoys exploring new gardens and connecting with the gardening community. Her enthusiasm for gardening is infectious, making her a cherished source of knowledge and inspiration.

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