They have long stems and a large ball of purple petals, making them a great candidate for fresh cut flowers. White Flower Farm notes these purple flowers grow best in full sun with well-drained soil.

purple stem is ladled with compound, trifoliate leaves extending 1 inch long and half as wide. Around mid-summer, it's decked in pea-shaped, four-petaled, pinkish-purple flowers. Seed-holding ...