Large Filbert (Corylus Maxima)

Plant: Table of Contents

large filbert (Corylus maxima) – A Complete Guide

Plant Name: large filbert (Corylus maxima)

What is plant large filbert (Corylus maxima)

Large filbert, scientifically known as Corylus maxima, is a deciduous shrub that belongs to the Betulaceae family. It is commonly grown for its delicious nuts and as an ornamental plant in gardens and landscapes. Large filbert is native to Europe and Western Asia and has been cultivated for centuries for its various uses.

Key Takeaways – Large filbert (Corylus maxima)

  • Facts: Corylus maxima is known for its large, sweet nuts and attractive foliage.

  • Growth: It is a deciduous shrub that can grow up to 10-20 feet in height and spread.

  • Uses: Large filbert is valued for its nuts, ornamental beauty, and as a wildlife habitat.



Large filbert should be watered regularly, especially during the dry summer months. A consistent supply of water is essential for the development of healthy nuts. However, it is important to avoid overwatering, as it can lead to root rot and other issues.


This plant thrives in full sun to partial shade. It is best to provide at least 6-8 hours of sunlight daily for optimal growth and nut production.


A balanced fertilizer can be applied to large filbert in early spring before new growth begins. Slow-release fertilizers can also be used to provide a steady supply of nutrients throughout the growing season.


Large filbert prefers well-draining, loamy soil with a slightly acidic to neutral pH. Amending the soil with organic matter such as compost or well-rotted manure can improve its texture and fertility.


Pruning large filbert is important for maintaining its shape, removing dead or diseased wood, and promoting better nut production. Pruning is typically done in late winter or early spring when the plant is dormant.


Nut Production

Large filbert is primarily cultivated for its delicious and nutritious nuts. The nuts can be eaten fresh, roasted, or used in various culinary applications.

Ornamental Beauty

The attractive foliage and unique branching structure of large filbert make it a popular choice for ornamental landscaping. It adds visual interest to gardens and provides shade in the summer.

Wildlife Habitat

The nuts of large filbert are also an important food source for various wildlife, including birds and mammals. Planting large filbert can contribute to supporting local wildlife populations.


Large filbert can be propagated through various methods including:

  • Seed Propagation: Growing large filbert from seeds is a common method. The seeds should be stratified before sowing to enhance germination.

  • Cuttings: Softwood or hardwood cuttings can be used to propagate large filbert. Softwood cuttings are taken in late spring or early summer, while hardwood cuttings are taken in winter.

Container Popularity

Large filbert can be grown in containers, making it suitable for small gardens, patios, and balconies. However, it is important to provide a large enough container to accommodate the plant’s growth and to ensure proper drainage.

Common Diseases

Disease Diagnosis

Large filbert is susceptible to certain diseases, including:

  • Eastern Filbert Blight: This fungal disease affects the twigs and branches of large filbert, causing cankers and dieback. It can be identified by the presence of elongated cankers on the stems.

  • Corylus Bacterial Blight: This disease is characterized by the appearance of water-soaked lesions on the leaves and stems, often leading to wilting and dieback.

Common Pests

Large filbert can be affected by various pests, including:

  • Aphids: These small insects feed on the sap of the plant, causing stunted growth and distorted foliage.

  • Filbert Weevils: The larvae of these weevils feed on the nuts of the large filbert, leading to reduced nut quality and yield.

Botanist’s Tips

  • Soil Requirements: Large filbert prefers well-draining, loamy soil with a slightly acidic to neutral pH.

  • Pruning: Regular pruning of large filbert promotes better nut production and helps maintain a healthy and attractive plant.

Fun Facts

  • Nut Production: Large filbert is known for its large, sweet nuts that are a favorite for culinary use.

  • Ornamental Value: The unique growth habit and attractive foliage make large filbert a popular choice for landscape planting.

Links to External Resources

In conclusion, large filbert (Corylus maxima) is a versatile and valuable plant with both practical and aesthetic benefits. Whether grown for its delicious nuts, ornamental beauty, or wildlife support, large filbert has much to offer to gardeners and nature enthusiasts alike.


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Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.