Perennial, or everlasting, sweet peas were grown by Thomas Jefferson at Monticello. The very long, lush, trailing vines are gorgeous rambling over shrubs or fences, gracing an arbor, or used as a groundcover. Withstands summer heat well, is fairly drought tolerant, and attracts pollinators. Flowers are lovely in bouquets. Usually scentless. Caution: Parts of this plant are toxic if ingested.