A “lollipop lilac tree” transforms the traditional lilac shrub into a tree-like form with a rounded canopy. This unique shape provides a structured focal point in gardens, on patios, or in other landscape settings. Its compact size and upright growth make it ideal for smaller spaces. The fragrant blooms add to its appeal.
Understanding the Lollipop Lilac Tree
The “lollipop” or “standard” lilac tree is created by grafting a lilac shrub onto a single, straight trunk, often from another lilac or a related plant like privet. This process results in a clear stem topped by a dense, rounded crown of foliage and flowers, resembling a lollipop. This form offers vertical interest and a more formal appearance than a typical multi-stemmed lilac shrub. Dwarf Korean Lilac (Syringa meyeri ‘Palibin’) is a common variety used for its compact growth and abundant blooms in this standard form.
Planting Your Lollipop Lilac Tree
For a thriving lollipop lilac tree, select a location with full sun, meaning at least six hours of direct sunlight daily for abundant blooms. Well-drained soil is also necessary, as lilacs do not tolerate consistently wet conditions. They prefer soil with a neutral to slightly alkaline pH, though slightly acidic conditions are tolerated.
When planting, dig a hole twice as wide as the root ball and slightly deeper. Carefully remove the plant from its container, gently tease out any circling roots, and place it in the hole, ensuring the top of the root ball is level with the surrounding soil. For container planting, choose a pot at least 30 cm wide with good drainage, using a high-quality potting mix. After positioning, backfill with soil, lightly tamp to remove air pockets, then water thoroughly to settle the soil around the roots.
Ongoing Care for Lollipop Lilacs
Consistent watering is needed, especially during the first growing season, to establish the root system. Mature lollipop lilacs become more drought-tolerant but still benefit from supplemental watering during extended dry periods. Avoid overwatering, as soggy conditions are detrimental to their health.
Lilacs are not heavy feeders, but a balanced granular fertilizer for woody plants can be applied in late winter or early spring if desired. This supports healthy growth and flower production. Adequate sunlight, ideally over six hours daily, also maximizes bloom density and overall plant vigor.
Pruning for Shape and Blooms
Pruning maintains the distinctive “lollipop” shape and encourages prolific flowering. The best time to prune is immediately after spring blooms fade, typically in late spring or early summer. Remove spent flower clusters to encourage new flower bud development for the following year.
To maintain the rounded canopy, trim any wayward growth. Regularly remove suckers emerging from the trunk below the graft union, as these are typically from the rootstock and detract from the tree form. Prune out any dead, diseased, or crossing branches to improve air circulation and plant health. Avoid heavy pruning or cutting into old, woody stems, as lilacs bloom on the previous year’s growth, and removing too much old wood reduces future flowering.
Protecting Your Lilac in Winter
Lollipop lilac trees are generally hardy in USDA Zones 3 through 7/8. For in-ground trees, proper drainage throughout winter is usually sufficient. Containerized specimens require more winter protection, especially for the graft union, which is vulnerable to extreme cold.
Move potted lilacs to a sheltered location, such as an unheated garage or shed, during the coldest months. If moving is not possible, insulate the pot by wrapping it with burlap or bubble wrap, or by placing it inside a larger container filled with insulating material like straw. Raising the container on pot feet or bricks allows for continued drainage, preventing waterlogging and root damage from freezing and thawing cycles.
Common Issues and Solutions
Lollipop lilac trees are generally robust, but they can encounter pests or diseases. Powdery mildew is a common fungal issue, appearing as a white, powdery coating on leaves, particularly in humid conditions or areas with poor air circulation. Good air circulation through proper spacing and pruning helps prevent its occurrence.
Other issues include bacterial blight, which causes dark spots and wilting, and common garden pests like borers or scale insects. Inspecting your tree regularly for signs of distress helps address problems early. Choosing disease-resistant varieties, such as Dwarf Korean Lilac (Syringa meyeri ‘Palibin’), also contributes to a healthier plant.