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Plants directory Dahoon Holly

How to Grow and Care for Dahoon Holly

"Ever wondered how to add year-round beauty to your garden without much fuss?" Dahoon Holly (Ilex cassine) could be the perfect solution!

By Victor Miller

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Published on June 16, 2025

Dahoon Holly
Dahoon Holly

In this article

Key Takeaways

  • Dahoon Holly is a native evergreen tree prized for its glossy green leaves and bright red berries that attract birds and pollinators.
  • It thrives in wet, acidic soils and is ideal for rain gardens, buffer zones, and coastal landscapes thanks to its tolerance for moist conditions.
  • Dahoon Holly grows well in full sun to partial shade and requires minimal pruning, making it a low-maintenance yet visually striking landscape choice.

"Ever wondered how to add year-round beauty to your garden without much fuss?" Dahoon Holly (Ilex cassine) could be the perfect solution! Not only does this evergreen shrub add the perfect pop of color to any garden in any season with its shiny green leaves and bright red berries, but it also brings wildlife into your yard all season. Dahoon Holly can serve as an ornamental shrub for your garden or a hedge, and is an easy-to-grow plant that will thrive in many conditions, giving your garden elegance and vitality all seasons long.

Scientific Name Ilex cassine
Common Names Dahoon Holly, Cassine Holly
Height 10-15 feet (3-4.5 meters)
Spread 6 to 8 feet (1.8 to 2.4 meters)
Hardiness Zones 7-10
Foliage Glossy, evergreen leaves
Blooms Small white flowers, followed by red berries
Best For Privacy hedges, ornamental garden shrub, wildlife attractor

Plant Care

Dahoon holly is a tough, low-maintenance shrub that suits a wide range of landscapes. With glossy foliage and showy berries, it shines in any garden. Dahoon Holly is not a fussy plant but some simple practices will keep your plant healthy and vibrant. Give it the right conditions to grow, regular maintenance and an occasional pruning session, and you’ll have this plant thriving for years.

Light

Dahoon Holly does best in full to partial sun, but will tolerate some shade as well. It will grow in dappled light, but will produce more berries with a lot of direct sunlight — at least 4-6 hours per day.

Soil

Dahoon Holly prefers slightly acidic to neutral soil that drains well. Use a combination of sandy loam mixed with organic material for the best results. Check for good drainage and avoid overwatering to prevent root rot.

Watering

Dahoon Holly needs moisture year-round. Water regularly through dry spells to ensure the soil stays damp but not soggy. Water deeply but less frequently in well-draining soil. Established plants are more drought-tolerant, but transplanted ones need to be watered more frequently.

Pruning

Dahoon Holly pruning is simple and recommended in late winter or early spring before the new growth emerges. Prune dead or damaged branches consistently, along with any crossing or crowded growth. This will help keep the plant’s natural shape and promote better air flow. If you wish to keep a more formal hedge, prune regularly to create its shape and remove old or superfluous growth. 

One note to keep in mind is that the Dense Foliage of Dahoon Holly makes it a great privacy screen or barrier. So depending on your landscape you may want to shape it as needed.

Propagating

Dahoon Holly can be propagated from seed or softwood cuttings. 

For propagation through cuttings, snip off a healthy branch in the spring or early summer and take cut below a leaf node. Dipping the cut end in rooting hormone and putting it in a moist but well-draining potting mix. Place the cutting in a warm, humid environment and after about 4-6 weeks check for root development. Or, you can sow into a nursery bed and transplant them out one year later after they have grown.

Growing in Pots

Dahoon Holly also grow well in pots. Select a big container with drainage holes and a well-draining potting soil, amended with compost. Containers can require more frequent watering, especially during hot dry weather. Then, make sure to put your pot somewhere that gets at least partial sunlight for good growth! The beauty of Dahoon Holly will make for a captivating focal point within outdoor patios or balconies or as a decorative piece for doorways.

Overwintering

In colder areas, Dahoon Holly may require some winter protection. It is hardy to Zone 7, but if you live in a region with colder winters, it’s recommended mulching the base of the plant and burlapping it over the winter to protect it from the cold. When growing Dahoon Holly in a pot, transfer it to a sheltered space like a garage or covered porch during coldest months. Note that it can endure a light frost; however, if freezing temperatures persist, it may damage its growth.

Blooming

Dahoon Holly blooms in late spring or early summer, producing small white flowers that are not particularly showy but attract pollinators like bees and butterflies. One of the confusing facts about the tree, however, are its bright red berries, which come after flowering and are highly attractive to birds. These berries can last well into the winter, providing winter interest as well as sustenance for wild animals. Females will only produce berries when a male is nearby, so to encourage good production you may want to plant both female and male plants.

Common Issues

There are a few common pests and diseases that can affect Dahoon Holly, though it is generally resistant:

Leaf Spot: Leaf spot is a fungal disease that creates dark spots on leaves. Do not overhead water and ensure good air circulation.

Scale Insects: These pests can attack the plant’s stems and leaves. Horticultural oil treatment can help control them.

Root Rot: This condition, triggered by soggy soil, can cause plants to die. Make sure your soil is well-draining so that this does not happen.

FAQ

Do I need a male and female Dahoon Holly to produce berries?

Yes, Dahoon Holly is dioecious, having distinct male and female plants. To produce berries, both types must be planted in proximity to one another.

How fast does Dahoon Holly grow?

Dahoon Holly is a slow-growing plant. Reach a mature height of 10-15 feet over the years.

Can Dahoon Holly be grown in a shady area?

While it can tolerate partial shade, Dahoon Holly will grow best and produce more berries in areas that receive full sun for a part of the day.

Is Dahoon Holly deer resistant?

Yes, Dahoon Holly is considered deer-resistant, though it's not completely deer-proof. During food shortages, deer might still sample the leaves or berries.

Can Dahoon Holly be trimmed into a hedge?

Dahoon Holly is great for a hedge, yes. Regular pruning will help maintain a neat, dense, and attractive barrier or screen.