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.
• Botanical Name: Lathyrus latifolius
• Family: Fabaceae
• Native: Africa and Europe
• Hardiness: Perennial in USDA zones 3-8
• Plant Dimensions: 6'–9' vines
• Variety Information: 1" flowers in white, pink, mauve, and violet
• Exposure: Full sun to part shade
• Bloom Period: Spring to fall
• Attributes: Attracts Pollinators, Cut Flower, Deer Resistant, Drought Tolerant, Heat Tolerant
• When to Sow Outside: RECOMMENDED. Cold Climates: 4 to 6 weeks before your average last frost date, or as soon as the soil can be worked. Mild Climates: Late summer to fall for winter bloom. Ideal temperature is 55°–65°F.
• When to Start Inside: Mild Climates: 4 to 6 weeks before transplanting out in the fall. Sow in biodegradable pots and grow in cool conditions (55°F or below).
• Days to Emerge: 10–21 days
• Seed Depth: 1"
• Seed Spacing: A group of 3 seeds every 12"
• Thinning: When 3" tall, thin to 1 every 12"