For success in the landscape (which I define as “right plant right place”), it’s important to get the exact plant specified by your designer.
Early in my career I specified three dwarf Mugo Pine. I wanted a uniform pin cushion shape to contrast with ornamental grasses and succulents. I wanted the pines to stay small, and contrast with the grasses that would be two thirds bigger. This was my vision. What happened instead was three dwarf Mugo Pine ‘Nana’ grew into three different shapes and heights! None of them stayed small. The fact is plants grown from seeds can be as variable as your siblings. My brother and I have blue eyes, my sister has green eyes, I’m a redhead my brother a brunette and my sister’s a blonde.
I learned that seed grown dwarf pines are variable, only plants grown from cuttings of a named cultivar could be trusted. I knew this in theory but the industry was deceptive in labeling. I now knew to avoid any dwarf conifer called ‘Nana’! That was a secret code word for seed propagated.
Then I was told that ‘Pumilo’ was a named variety and it stayed low. I was tricked again. The industry was also using seeds from ‘Pumilo’, not cuttings to produce a more affordable and (profitable) dwarf Mugo Pine. For many years I did not use any Mugo Pine at all, mainly because I was disgusted.
When specific size and shape uniformity are needed always select plants grown from cuttings or tissue culture. People who work at retail nurseries are sometimes ignorant of these finer points.
These days I need dwarf evergreens, particularly pines, for my clients because they are true low maintenance. They are low water, no pruning or candling required, they take hot full sun even next to concrete, and they look great year round. These true dwarf pines won’t get too tall in 10 years. So I had to find sources and growers I could trust.
The varieties I use and where I get them:
Oregon Small Trees is a private wholesale nursery/grower. The owner, Dave Leckey and his daughter, grow all of their plant material from cuttings. It takes many years to grow dwarf plants to a good size for the landscape. I also specify plants grown by Iseli Nursery and another resource is Buchholz & Buchholz Nursery. None of these resources are retail, you have to buy their plants through a plant broker or in the case of Iseli, those plants can be found at Portland Nursery, Cornell Farms and Farmington Gardens.
Pinus Mugo ‘Sherwoods Compact’ is a favorite of my clients, they love the texture of the needles. I like Pinus Mugo ‘SlowMound’ a bit better for some designs. It’s a darker green. My favorite miniature Mugo Pine is called ‘Donna’s Mini’ and I’ll spend more money to get a larger tiny plant when I use ‘Donna’s Mini’. It grows less than 1 inch a year in ideal circumstances.