Scotch Heather 'Maires' (Calluna vulgaris 'Maires') is a classic heather for cool-summer gardens, valued for its fine texture, evergreen color, and tidy form. You get a dense, mat-forming plant with upright flowering spikes that add bright seasonal interest. At maturity it typically reaches about 24-36 inches tall and 24-36 inches wide, making it useful as a low shrub, an edging, or a small-scale groundcover in mass plantings.
Plant in moist but well-drained, sandy, rocky, or loamy soil that stays acidic. Good drainage is essential, but avoid letting the root zone dry out completely, especially while the plant is establishing. Choose a spot with full sun to part shade; in warmer areas, a bit of afternoon shade can help keep foliage looking fresher.
For best shape and long-term performance, shear or lightly prune in early spring (or right after flowering where appropriate) to prevent legginess and encourage bushier growth. Use a light hand: avoid cutting deep into old, leafless wood. Mulch to moderate soil temperature, reduce swings in moisture, and protect shallow roots, and keep mulch from piling against stems.
Heather can be sensitive to heat and humidity, so it performs best where summers are not excessively hot or muggy. In the right conditions, it provides reliable, evergreen structure and attractive white blooms, and it can also offer some deer resistance compared with many other ornamentals.