Aeoniums are diverse succulents, admired for their striking rosettes. Among many cultivars, ‘Starburst’ and ‘Sunburst’ are popular varieties that often cause confusion due to their similar names and shared ancestry. This article clarifies the differences between ‘Aeonium Starburst’ and ‘Aeonium Sunburst’, highlighting what makes each cultivar distinct.
Understanding Aeonium Starburst
Aeonium ‘Starburst’, also known as ‘Lemon-Lime’, displays vibrant variegated foliage. It forms rosettes of green, spoon-shaped leaves with irregular yellow banding towards the center. The outer edges often develop a pink blush, especially when exposed to ample sunlight. This cultivar is recognized for its dynamic coloring, where the intensity of the yellow and pink can vary. Its rosettes can grow quite large, contributing to a substantial presence in a succulent collection or garden.
Understanding Aeonium Sunburst
Aeonium ‘Sunburst’ is a highly prized variegated succulent, known for its large, symmetrical rosettes. Its fleshy, spoon-shaped leaves display a creamy yellow and green striped pattern. Leaf edges often show coppery red or pink tips, especially with significant sun exposure. This well-established cultivar has received accolades like the Royal Horticultural Society’s Award of Garden Merit. ‘Sunburst’ forms impressive rosettes that can reach a considerable diameter, supported by long, bare stems.
Key Differences: Starburst vs. Sunburst
While both ‘Aeonium Starburst’ and ‘Aeonium Sunburst’ are variegated, their primary distinction lies in their variegation patterns and overall size. ‘Sunburst’ typically features a green center with yellow or creamy margins, creating a lighter overall appearance. The yellow or cream is usually more concentrated along the outer leaf edges, contrasting with the central green. This creates a distinct visual contrast. Its rosettes commonly span 6-8 inches (15-20 cm) in diameter.
In contrast, ‘Starburst’ exhibits a darker overall coloring, often with vibrant splashes of yellow or irregular yellow banding throughout the leaf center, with green predominating towards the margins. This gives ‘Starburst’ a more intricate, mottled look. The overall appearance is one of lively contrast. ‘Starburst’ rosettes tend to be larger, potentially reaching up to 12 inches (30 cm) or even 20 inches (50 cm) in diameter, surpassing ‘Sunburst’.
‘Starburst’ is also considered a partial reversion of ‘Sunburst’, explaining their close genetic relationship. Furthermore, ‘Starburst’ may develop more pronounced red or purple leaf margins when stressed.
Shared Care Requirements
Despite their visual distinctions, ‘Aeonium Starburst’ and ‘Aeonium Sunburst’ share similar cultivation needs. Both thrive in full sun to partial shade, with brighter light encouraging vibrant coloration. In regions with intense summer heat, afternoon shade can prevent leaf scorch. They prefer well-draining soil, like a sandy loam or potting mix amended with perlite, which is crucial to prevent root rot.
Water thoroughly, then allow the soil to dry completely before the next application. Watering frequency decreases during summer dormancy, when the plants conserve energy and may curl their leaves. During their active growing season from winter to spring, they benefit from more regular watering. Both cultivars are hardy in USDA zones 9b to 11b, tolerating temperatures down to 25°F (-3.9°C).