Upright rosemary is a must in xwric gardens. Smells incredible, is cold hardy, and gets tiny blue flowers in spring. Mine get to about 4' x3' with no care. They do get woody, just chop it back in spring and it will grow new shoots and be beautiful again in a month! Blue Flowers
Rosemary ‘Corsican’ (Rosmarinus prostratus) Trailing Rosemary. Bushy, semi-trailing plants with deep blue flowers and very pungent, needlelike green foliage that’s excellent for cooking. Grows 24-30″ tall. Needs full sun, good drainage. Grow near south facing wall for best chance of overwintering. Tender perennial.
Ohio Spiderwort (Tradescantia ohiensis) The delightful deep blue flowers of Ohio Spiderwort bloom for an extended period in late spring and early summer. Tradescantia ohiensis can be planted with Smooth Penstemon for a fantastic color combination. Spiderworts go dormant in summer, so plant them with other later-blooming prairie flowers and grasses.