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Foliage is typical of those in the mint family.

Labiatae/Lamiaceae

Attractive bilabiate purple flowers grow on short, dense, whorled spikes above stems of alternate ovate, somewhat pubescent leaves.

Plant Type: perennial

Plant Form or Habit: rounded/mounded

Plant Use: For rockgardens.

Propagation:

seed
division
stem cuttings

Flower Color:

purple

Bloom Period:

mid-summer

Width: Minimum: 12 inches     Maximum: 24 inches

Foliage Texture: medium

USDA Hardiness Zone: 5

Water Requirements: average

Additional Comments: D. grandiflorum is sometimes referred to as D. rupestre. Our plants collapsed, perhaps because of a rainy summer paired with a dose of fertilizer.