Have you ever noticed how some gardeners want to show off their mulch? Every plant or species group is carefully set far enough apart from the next to grow neatly, like little islands, in a sea of brown mulch. These curated clumps of vegetation may be arranged into an arc or grid or another clever scheme.
If shrubs, they are neatly sheared often enough to keep them in their intended shape. And the whole scene is surrounded by a sharp bordered sea of fresh mulch to demarcate the planting space.
I see these neatly manicured beds at the entrances to shopping centers and upscale neighborhoods, always anchored by a few rounded, evergreen shrubs. The color plants usually get switched out seasonally, with a few dozen little Begonias planted in April or May, replacing the ornamental cabbages and pansies planted last October. Once the cabbages flower, they look weedy, and are goners.
Of course, one must weed to keep it in shape. Seeds blow in from everywhere, so one must weed by hand, or spray periodically with an herbicide, to keep things neat. And often the answer is simply piling on more shredded bark mulch over the old, hiding what has faded. Mulch piles creep up the trunks of any larger trees like little brown mountains, beneath their leafy canopies.
This Aristotelian garden style asks us to make a lot of choices. First, and most importantly, what is a desirable plant, and what is a weed? What makes one plant desirable, and another not? The gardener always gets to choose.