Considered by most growers as the loveliest Globe Thistle, Echinops ritro 'Veitch's Blue' is an excellent rebloomer that produces abundant, dark violet-blue flowers at the end of gracefully curving, branched, silvery stems. Blooming from mid-summer to early fall, the bold and ornamental, steel blue globe-shaped flowers (the size of a golf ball) rise above the foliage of sharply divided, dark green leaves, covered in down beneath. Adds outstanding contrast, interest, and color to the summer garden while being trouble-free and low maintenance.

Hardy and reliable, Agastache 'Black Adder' (Giant Hyssop) is a charming herbaceous perennial boasting bottle-brush, terminal spikes, 6-8 in. long (15-20 cm), packed with fragrant, tubular, two-lipped red-violet flowers emerging from dark buds. Blooming from mid-summer to fall, they provide a remarkably long floral display and add color as well as a lovely spiky texture to the garden.