Rocky Knoll Farm
Calluna Caleb Threlkeld Heather
$26
Calluna Caleb Threlkeld is an exceptional Heather cultivar with lavender flowers and dense, dark green foliage. Its prostrate mat form stays under 6 inches tall and spreads 15-18 inches. It is named after the author of the first Irish Flora, who came from Threlkeld in Cumberland.
Perfect for borders, slopes, and containers, this evergreen shrub requires full sun and well-draining acidic soil. It is hardy to -20°F when protected from windchill.