Mike Minton, the garden’s chairman, says not all horticulture adventurers can meet the upkeep standard.

The tropical milkweed in my garden are plants grown from starts provided at giveaway at a farmers market in Washington, D.C. in May 2017. (See, Catering To Monarchs In DuPont Circle)

Speed limit signs that reach 80 mph aren’t the only exhilarants that pop up on the edge of Utah’s highways.

It’s easy to get lost in the mesmerizing hues of the ancient stone faces. Zion National Park is a neighbor. But between rocks is a hard place to garden and the sound of thunder might mean something other than rain.

It was piled by the curb, a 16-piece sectional steel trellis ready for bulk trash collection. I passed it by several times while walking through the neighborhood. I didn’t think I had room anywhere in my garden for a big trellis. The structure was heavy, too. But the attraction outweighed all other considerations. After a…