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Allan designs and plants flowering gardens in Montreal, Zone 5 [USDA Zone 4] .

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Entries in cold climate plants (1)


A Drought-Tolerant Perennial that is Really a Shrub

Image: canbyi is a drought tolerant, cold climate, evergreen plant hardy to USDA Zone 4, perhaps even 3. When I first discovered it, accidentally, in a grab bag collection of perennial seedlings at a behemoth retailer, it seemed appropriate as rock garden ground cover.

Fascinated by its rich, dark green and sensuous pinnate foliage, I placed it in a dry sunny spot, among the Phlox subulata and the Arabica caucasica. That’s how I created a visually effective composition of various low growing foliage plants, that cascaded over the rock garden.

Extreme close up image from wikpedia.orgThroughout the season, Paxistima would stand out from among all of them. To the eye, it appeared prickly, but to the touch, it was soft, smooth, and silky. It beckoned me closer every time I noticed it and I would reach out to stroke it with the same eagerness as petting a puppy. What an exciting and moving tactile experience!

Image: arrowheadalpines.comIt was a surprise to realize how slowly this plant would mature. However, its lack of height [mine grew one inch high but it can reach 12 inches] and its disciplined spread [it will slowly grow to 5 feet wide if left untrimmed, but it is not invasive] were compatible attributes with my gardening personality. I was pleased that it could thrive in dry clay, in a heat-and-drought-ravaged corner of the garden.

After ten years of making me happy, I lost the plant in a renovation project when, for structural reasons, the rock garden had to be demolished. Since Paxistima had insinuated itself between several large boulders and was rooted into hard clay, there was no way the demolition crew could save it.

A few years later, when I began to landscape other people’s gardens, I found a new need for my long lost but loving Paxistima. Providing it is manicured each season, this soft, sensual, and reliable evergreen plant can be used successfully as background filler in the front border of flowerbeds.

However, when I began to hunt for it anew, I discovered two facts that had eluded me. First, in some parts of the country, Paxistima is almost impossible to find at retail. Second, it is not a perennial but a miniature shrub.

Very small shrubs that exhibit attractive sensory attributes have an important role to play in the design and appearance of perennial flowerbeds. There will be more on this subject in my next post where I hope to report on three relatively new miniature shrubs suitable for cold-climate gardening.