Photos are representative and may not match your specific variety.

Mars

Flower

Lathyrus odoratus

Overview
From the Spencer series. Brilliant crimson streaks throughout and lining the petal edge. Plants produce 3-4 blooms per 9-12" stem. Highly fragrant. NOTE: Spencer series sweet peas are known as late-flowering because they require at least 12 hours of daylight, unlike more modern sweet pea varieties bred for winter production, which may require only 10-11 hours of daylight. Attracts hummingbirds.
Planting
Direct sow 1 inch deep in fall (mild climates) or early spring. Alternatively, start indoors 6-8 weeks before last frost and transplant. Nick seed coat or soak overnight to improve germination.
Growing
Sun: full. Water: high. Soil: Well-draining loam, slightly alkaline (pH 6.5-7.5). Space plants 6" apart. Germination: 7-14 days.
Pests & diseases
Common pests: Aphids, spider mites, thrips. Common diseases: Powdery mildew, fusarium wilt, root rot in wet conditions.