Perennial Sweet Pea
Zone: A vigorous vine growing 9-12 feet tall and attaching by tendrils.
Size: Vine grows 20-25 feet tall and climbs by means of aerial roots.
Location: Prefers full sun
Flowering: Blooms July-August. It is drought tolerant and provides flowers in the heat of the summer when annual sweet peas fail. Flowers are fragrant and make good-cut flowers. Perennial sweet pea will reseed and sucker freely in the garden.
Maintenance: Prune very hard in early spring.