Angel's Trumpet is one of the plants with drooping white bell shaped flowers. Lily of the Valley is another plant with white drooping bell shaped flowers.
It is a small perennial that grows to a height of about 5 ft (1.5 m) with distinctive bell-shaped greenish-purple flowers.
Abutilion or Chinese Lanterns.
Thistle plants have spiny leaves and produce purple or pink flowers with a spiky shape. Hollyhock plants have tall stems with large, colorful flowers that are shaped like a bell or trumpet.
Abelia
The dogbane is a North American plant which has bell-shaped white and pink flowers. Plants with bell-shaped flowers are from the genus Apocynum.
Belladonna, also known as deadly nightshade, is a perennial herb with glossy, dark green leaves and purple bell-shaped flowers. Its berries are green when unripe and turn shiny black when mature. All parts of the plant are highly toxic if ingested.
Any of numerous usually evergreen ornamental shrubs of the genus Rhododendron of the North Temperate Zone, having clusters of variously colored, often bell-shaped flowers.
A+=tropical flowers
Heather is a low-growing plant that belongs to the Ericaceae family. It is known for its small, needle-like leaves and produces tiny, bell-shaped flowers in shades of pink, white, or purple. Heather is often used in landscaping and gardening to add color and texture to gardens.
May grow to 4 ft (1.2 m), somewhat succulent, thick, lance shaped, leaves with rough hairs. Small, purple bell-shaped flowers grow from the upper leaves on red stalks in clusters, becoming cup-like fruits.
An aspidistra is any of a variety of Asian flowers of the genus Aspidistra, with large leaves and small bell-shaped flowers, widely cultivated as a houseplant.