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Tall, upright Verbena bonariensis
is great for the flower border while sprawling types, such as
Verbena x hybrida, are ideal for hanging baskets and other containers.
Garden verbena (Verbena x hybrida)
is a warm-season annual in Zones 2 to 11 but can also be grown
as a perennial in Zones 7 to 11. It grows 6 to 12 inches tall
and 12 to 24 inches across.
Rose vervain or clump verbena
(Verbena canadensis) is an evergreen perennial Zones 6 to 10.
It grows 8 to 18 inches tall and 3 feet wide.
Verbena bonariensis is reknown
for attracting butterflies and is an annual growing perhaps 4
feet in Zones 2 to 6 and a perennial hitting up to 6 feet in
Zones 7 to 10.
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