Toadflax earns its keep early in the season, when the cool weeks of spring coax out a froth of tiny snapdragon-like blooms in lavender, yellow, orange, pink, and white, each with a contrasting blotch on its throat. The flax-like foliage that gave the genus its name (from the Greek linon) is slender and unassuming, letting the flowers carry the show from ground level to about 18 inches.

This is a plant that rewards planning rather than improvisation. Sow it where afternoon shade will soften the summer heat, or keep a second round of seed ready for a late-summer direct-sow to secure fall flowers. After the first flush, cutting stems back by half restores momentum and extends the display. It self-seeds reliably where drainage is good, which in a mixed border feels less like a problem and more like a gift.