Saturday, February 1, 2020

Silberlocke Korean Fir


Dwarf cultivars of Korean firs (Abies koreana) are favorites among many conifer collectors (USDA hardiness zones 5-8). Four ultra-dwarf varieties grow inches per year. Horstmann’s Silberlocke’ is the leading Korean fir variety among conifer collectors. To encourage a deep extensive root system, extra care (TLC) is needed the first 2-3 years after planting in the garden.



Abies koreana  'Horstmann’s Silberlocke’
'Horstmann’s Silberlocke’ The German word silberlocke means "silver locks of hair". The needles on the branches curl on the tops exposing the white underside of the needles, resulting in a frosted look. Annual growth rate is 6 - 8 inches (15 – 20 cm). Over the years, 'Horstmann's Silberlocke' will develop into a small 12 feet high x 8 feet wide landscape tree. The curling needle trait is often lost as the plant age. ‘Silberlocke’ also produces purple/tan cones on young plants.

Plant in a humus-rich, acidic, well-drained soil and in a sun to partial shade garden bed. Mulch with acidic organic compost such as pine needles, shredded pine bark, or chips. Irrigate once or twice monthly during periods of drought, heat or high winds.


Korean fir appears to be more heat tolerant than other firs, but it prefers cooler regions of the U.S. As with most firs in the South, Korean fir will often fail if too hot and will fail in wet soppy soils. In the warm humid southeastern U.S. environment, Korean fir should be grafted on Momi fir (Abies firma) rootstock. Dwarf forms make great additions to a small urban garden, a rockery, or a large container. Korean fir is rated as deer resistant.


Because of their rates of growth, super dwarfs are investments in the future. A plant with some size will likely command a premium price.

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