Grace Ward Lithodora

Lithodora diffusa 'Grace Ward' (Lithodora diffusa 'Grace Ward') is one of the most intensely and brilliantly blue-flowered ground cover perennials in the entire ornamental plant world — a compact, mat-forming sub-shrub that produces an extraordinary, jewel-toned display of vivid, deep gentian-blue to cobalt-blue star-shaped flowers with an intensity and purity of color that simply has no equal among low-growing ground cover plants of any kind. Native to western Europe, this steady, spreading evergreen carpeter clothes itself throughout the season in small, narrow, dark green, bristly leaves that provide a rich, deep foliage backdrop against which the brilliant blue flowers glow with an almost supernatural luminosity — particularly breathtaking when the plant is in full spring bloom and the dark foliage disappears entirely beneath a dense blanket of the most vividly saturated blue imaginable. For gardeners who know and treasure it, 'Grace Ward' is simply, irreplaceably essential.

This professional-grade 4" plant arrives with a healthy, well-established root system cultivated through professional horticultural practices — ready to begin its characteristic steady, spreading growth. 'Grace Ward' excels as a rock garden specimen, a front-of-border edging plant, a cascading wall plant flowing gracefully over stone or raised bed edges, and a ground cover carpet in sunny, well-drained, acidic garden positions where its uniquely vivid blue flowers can be displayed to their full, breathtaking effect. Position it where low light can illuminate the flowers for the most luminous possible display — in morning sun or beside a pale stone wall, the effect is genuinely unforgettable.

• Unrivaled Brilliant Gentian-Blue Flowers: Vivid, deeply saturated gentian-blue to cobalt-blue star-shaped flowers are among the most intensely and purely blue of any low-growing ornamental plant in cultivation — a color of genuine rarity, extraordinary luminous beauty, and unmatched visual impact that makes 'Grace Ward' one of the most sought-after and treasured ground cover perennials available.
• Dense Evergreen Mat of Dark Green Foliage: Small, narrow, bristly dark green leaves form a dense, spreading, weed-suppressing evergreen carpet of consistent year-round ornamental quality — providing a rich, deep foliage backdrop that makes the brilliant blue spring flowers appear even more vivid, saturated, and luminous by contrast.
• Outstanding Rock Garden & Cascading Wall Plant: The low, spreading mat-forming habit flows beautifully over walls, between boulders, and along rock garden edges — a natural rock garden and wall plant specialist that softens hard surfaces with dense dark foliage and delivers its extraordinary blue display precisely where it creates the most dramatic, memorable impact.
• Long, Prolific Spring Bloom: Flowers prolifically and abundantly throughout spring with a display of such saturated blue intensity that it consistently and immediately draws the admiration of every garden visitor — one of the most visually arresting and memorable spring flowering performances available from any low-growing ornamental plant in cultivation.
• Pollinator Friendly: The vivid blue flowers attract bees and beneficial insects reliably throughout the spring bloom season — adding ecological value and critical early-season nectar resources to rock gardens, raised bed edges, and mixed ornamental plantings while the extraordinary blue display does its visual work.

These 4" healthy live plants thrive in full sun (6+ hours daily) with well-drained, acidic to neutral soil; acidic soil conditions (pH 5.5–6.5) are important for best performance — alkaline or chalky soils cause yellowing and poor vigor. Water moderately during establishment, then reduce to low supplemental irrigation; good drainage is essential and plants dislike prolonged wet root conditions. USDA Hardiness Zones 6–8; mature height: 4–6 inches; spread: 18–24 inches. Bloom time: spring through early summer. Trim lightly after flowering to maintain a tidy, compact mat. Avoid overfeeding — lean conditions produce the most floriferous plants.