Delphiniums
Have already been discussed. All the named varieties are good, especially Belladonna. See page 26.
Dictamnus—Gas Plant
Fully described on page 32.
Digitalis—Foxglove
The form usually grown is treated as a biennial, and with me, must be coldframed the first year. Ambigua or grandiflora is a perennial having pleasing pale yellow flowers, and is a comparatively long-lived plant.
Echinops—Globe Thistle
This is a tall, interesting plant with foliage somewhat like a thistle. E. Ritro is the best. Its peculiar flower head consists of a ball about an inch and a half in diameter, from which spring, in close array all over the ball, minute flowers of a deep metallic blue.
Eryngium—Sea Holly
A plant somewhat similar in appearance to the Echinops, but smaller in all its parts. E. amethystinum is the best, having small globular flower heads of an amethystine blue color, this color also extending quite a way down the flower stems.