Eupatorium coelestinum is a perennial plant with fluffy blue flower heads.
The stems, flowers, and leaves of all species of monkshood are poisonous.
Summer bulbs are labor intensive, as they have to be dug and stored each fall; however, they add immeasurably to the diversity of the summer garden.
Campanulas, or bellflowers, are plants with bell-shaped blue or white blooms, and they range in height from ground-hugging dwarfs to plants that grow to 6 feet.
Balloon flowers' petals flare out so that the bottom of the flower is broader than the top and shaped like a bell.
When perusing for spring bulbs this fall, consider choosing flowers that are star shaped.