Looking great in the garden despite our high temperatures is the Siberian native, Microbiota decussata. While the species typically struggles in our climate, the cultivar ‘Prides’ has been outstanding. Microbiota is essentially a groundcover juniper replacement for shade. For us, it matures with a 4′ wide spread, after 10 years. We have found that it does best in areas that stay slightly on the dry side, and in soils that are well-drained. There really isn’t another evergreen shrub that gives you the same texture in the woodland garden.
We don’t have many Siberian plants which thrive in the southeast US, so we get pretty excited when we find one that does. I was introduced to Microbiota decussata by the late JC Raulston, back in the mid 1970s, and actually still have one of my original plants that’s still alive. Many years later, a much improved form came to market under the name Microbiota decussata ‘Prides’.
Microbiota is a monotypic genus of conifer that has a textural appearance somewhere between a Juniper and a Selaginella. In the wild, Microbiota can only be found in one small region of the Sikhote-Alin mountains, which is about 500 miles north of Vladovostok, Russia, where it occurs between 6,500′ and 7,000′ elevation.
Although Microbiota was officially discovered in 1921, and published in 1923, the Russian government, long-known for its secrecy, kept it completely under wraps until the early 1970s.
Unlike most junipers, which need sun to thrive, microbiota prefers shade to only part sun. Consequently, it you like this texture and don’t have full sun, this is the plant for you. For us, it matures at 18″ tall x 6′ wide.