Garden Design. Tuesday , March 20th , 2018 - 14:48:58 PM
That means that if the riser is 5 inches, the tread (what you walk on) should be 16 inches. All I can say is that the rule is true, and I have used it from steep canyon faces to gentle changes of patio levels. A useful corollary states that 5 feet is the minimum width for two people climbing steps side by side.
Imparted by Ralph Snodsmith, my first official gardening teacher at the New York Botanical Garden and talk radio host (a character whose working uniform was always a forest green three-piece suit), there is no greater planting wisdom. No matter how brilliant a plan one conceives, if the plants are not well planted at the right height, in a sufficiently sized, and properly amended pit, the results will likely be poor. Some rules just can not be broken.
First, is to plant big to small, start with trees, then shrubs, then perennials, then ground cover. This is important not only in a compositional way (seeing the bigger forms first gives a better sense of the overall structure), but in a completely practical sense.
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