Sunburst Honey Locust Tree: A Guide to Growing and Care
Description and Characteristics
The Sunburst honey locust tree (Gleditsia triacanthos var. inermis ‘Suncole’) is a popular landscape tree known for its unique combination of beauty and resilience. A member of the Fabaceae family, it boasts fern-like compound leaves with a fine texture, creating an open and airy canopy. The leaves emerge yellow in spring, morphing into a greenish-yellow shade, and finally turning a light green in summer. In fall, they return to their vibrant yellow hue, providing a stunning display.
The Sunburst honey locust is a podless and seedless cultivar, making it a more desirable choice for homeowners compared to the native species, which produces thorns and seed pods. Its pyramidal shape and moderate size (30-40 feet tall and wide) make it suitable for a variety of landscape settings.
Growing Conditions
Light Requirements
Sunburst honey locust trees thrive in full sun, requiring at least six hours of direct sunlight per day. They can tolerate partial shade, but their growth and flowering may be reduced.
Soil Requirements
These trees are highly adaptable to different soil types, including loamy, sandy, clay, and silt. They prefer well-drained soil with a pH ranging from acidic to alkaline.
Water Requirements
Honey locust trees have moderate water needs and can tolerate both drought and flooding conditions. Newly planted trees should be watered regularly, especially during the first growing season. Mature trees can survive on rainfall alone in most climates.
Nutrient Requirements
Fertilizing is not typically necessary for mature Sunburst honey locust trees, especially if they are planted in a fertilized lawn. However, younger trees may benefit from an application of a balanced fertilizer in spring.
Care and Maintenance
Pruning
Mature Sunburst honey locust trees require minimal pruning, except to remove dead or diseased branches. Pruning can also be done to shape the canopy and prevent branches from rubbing against each other, which can lead to canker development. The best time to prune is in late spring to fall.
Mulching
Applying a ring of mulch around the base of the tree helps retain moisture, suppress weeds, and protect the trunk from damage. Avoid piling mulch directly against the trunk, as it can promote disease and attract pests.
Pest and Disease Control
Honey locust trees are generally resistant to pests and diseases. However, they can be susceptible to mites, webworms, cankers, and root collar rot. Regular inspection and prompt treatment can help prevent or control these issues.
Frequently Asked Questions
Are Sunburst honey locust trees messy?
No, Sunburst honey locust trees are a clean cultivar that does not produce thorns or seed pods, making them a low-maintenance choice for homeowners.
What is the lifespan of a Sunburst honey locust tree?
With proper care, Sunburst honey locust trees can live for 70 years or longer.
Are Sunburst honey locust tree roots invasive?
Honey locust trees have a taproot that can reach deep into the soil, along with an extensive system of lateral roots. While not typically considered invasive, these roots can interfere with lawn mowing in some cases.
Other Related Information
Types of Thornless Honey Locusts:
- ‘Imperial’
- ‘Moraine’
- ‘Northern Acclaim’
- ‘Perfection’
- ‘Street Keeper’
Propagating Sunburst Honey Locust Trees:
The ‘Sunburst’ cultivar is a registered trademark and cannot be propagated without permission.
Common Pests and Diseases:
- Mites
- Webworms
- Cankers
- Root collar rot
Additional Tips:
- Protect the trunk of young trees from lawn equipment damage by installing a ring of mulch or a tree guard.
- Monitor your tree regularly for signs of pests or diseases and take appropriate action to address any issues promptly.
- Consider planting companion plants around your Sunburst honey locust tree to attract beneficial insects and enhance its overall health.
