Sisyrinchium angustifolium 'Lucerne' ~ Lucerne Blue-Eyed Grass Size:1 QUART The Summerific series blooms all

The Summerific series blooms all long the stems instead of just at the stem ends like most older hibiscus varieties

The inconspicuous flowers in spring to give way to small black fruits in fall which last through winter

Hamamelis intermedia 'Arnold Promise' cc-by-sa/2

5) Can use sulfur or iron sulfate to lower PH

(2)  Gmihail at  Serbian Wikipedia

Sisyrinchium angustifolium 'Lucerne' ~ Lucerne Blue-Eyed Grass Size:1 QUART The Summerific series blooms allLucerne Blue Eyed Grass is a low growing semi evergreen perennial wildflower with medium green lance like foliage. The distinctively flat flower stems hold heavy blooms of intense purple blue flowers with yellow eyes in late spring and early summer. Best color with full sun and well drained soils. Type: Perennial Origins: Eastern N. America; GA Native Height: 0. 5' 1' Spread: 0. 5 1' Spacing: 1' USDA Hardiness Zone: 4 8 Culture: Full Sun, Part Sun