Native to Eurasia, Allium sphaerocephalon is an ornamental onion that produces dense, egg-shaped flower heads that start green and turn reddish-purple as they mature. When it is in full bloom, it ...
2. Invest in evergreens. Above: Controlled chaos. There are a lot of frothy plants in this border snapshot including Valerian officinalis, hesperis, roses, Allium sphaerocephalon, catmint, and hardy ...