Abies koreana 'Silberkugel' / Silberkugel Korean fir
Abies koreana 'Silberkugel' in some ways it is the most distinctive of a group of miniature Korean fir offered by Coensoium Gardens. 'Silberkugel' has a mass of branchlets that appear to spread horizontally over the top of the plant. Each branchlet is slightly curved with the foliage concentrated more toward its tip. The older branchlets are beneath the younger ones as the plant dependably grows into the shape of a broadly spreading cushion. A specimen will become somewhat flat-topped as it ages, growing less than 1 inches (2.5 cm) per year. (Fincham, Robert L.)
Another of the small, bun-shaped forms of Korean fir. It grows slower than 'Silber Mavers' but faster than 'Silberkugel'. (Fincham, Robert L., Coenosium Gardens Catalog)
Werner Wüstemeyer of Schirmbeck, Germany found the witch's broom that provided the propagation material for Abies koreana 'Silberkugel' in the late 1980s. He is well-known for the introduction of many other fine cultivars of Korean fir.
Abies koreana 'Silberkugel' photographed at Coenosium Gardens, Eatonville, WA
Photo by Will Fletcher