Gardening in colder regions, such as USDA hardiness zone 4, makes it a little difficult to plant a variety of types of flowers. Zone 4 states like Minnesota, Alaska, and other northern regions with cold climates, require frost-tolerant plants with hardy root structures. Trumpet honeysuckle is ordinarily an evergreen vine, but in colder regions like zone 4, it is a deciduous plant. It produces trumpet-like, fragrant blossoms that range in color from orange to red. Trumpet honeysuckle prefers acidic, well drained soil, and is a beautiful climbing flower for zone 4 yards and gardens.