Comprehensive Gardening Resource
How to Grow Rudbeckia Commemorating Olaf Rudbeck (16601740) Swedish professor of botany and counselor of Linnaeus (Compositae). Cone flower. A genus of about 40 herbaceous plants, mostly perennial and hardy, natives of North America, related to Echinacea. The flowers are showy, daisy-like, often with drooping petals and conspicuous conical centers. Most of them are excellent herbaceous border plants and are […]
How to grow Echinops Echinops (ek-in-ops) From the Greek echinos, a hedgehog, opsis, like, referring to the spiky appearance of the flower heads which resemble a rolled-up hedgehog (Compositae). Common Name: Globe thistle. Hardy herbaceous perennial and biennial plants for the border. Species cultivated (All perennial) E. bannaticus, 2-3 feet, violet-blue globular heads of flowers, summer, Hungary. E. humilis, 3-5 […]