Allium, Serendipity, Ornamental Onion, Container Size: 4.5″
The sport shares all of the qualities that made ‘Millenium’ great, but with attractive blue foliage. Flowering in rosy purple, the plant’s globe-like flowers appear and stay fresh for long stretches, almost never being nibbled by deer or rabbits.
Sempervivum, Montfort, Hen and Chicks, Container Size: 3″ (2.6×3.5″)
You can even grow them in pure gravel. Expect the neat rosettes to multiply freely by runners that form dense colonies of little “chicks”. You can expect them to flower with maturity, and after they flower, the rosettes will die.