Lathyrus odoratus. Plant High Scent sweet pea seeds for incredibly luxurious floral fragrance. This variety has large, pure white flowers that blush at the edges. The vines are tall at 120cm (48"), and the stems are long, making them superb and elegant cut flowers. "High Scent" is no exaggeration - these are the sweet peas to grow for their intense perfume. Try them on a trellis or as a screen to break up garden spaces. It's easiest just to direct sow the seeds in early spring and erect a trellis or support once the seedlings are 15cm (6") tall. Keep the vines clear of spent flowers to prolong the bloom period.
Sweet peas (Lathyrus odoratus) are annual climbing plants which can grow to heights of 1–2 meters (3-6'). Most varieties require a trellis for support. The flowers range with a variety of colours and intensity of fragrance. They are are a flowering plant in the genus Lathyrus in the family Fabaceae (legumes), native to Sicily, southern Italy and the Aegean Islands. Continue reading below for some tips on how to grow sweet peas from seed.
Lathyrus odoratus and others
Season & Zone
Exposure: Full sun
Sow indoors 6-8 weeks before the last average frost date for your area. Or direct sow outdoors in early spring, while the soil is still cool and light frost is still possible. Plants are strongest from an early, indoor sowing. Sweet peas can also be direct sown in the fall where winters are mild.
Sow seeds 1cm (½”) deep. If starting indoors, chip seeds or soak them in warm water for 24 hours. Use a seed inoculant for the best results. Maintain a soil temperature of 12-18°C (55-65°F). Seeds should germinate in 10-20 days.
For best results, prepare the sweet pea bed the previous fall. Cultivate the soil to 45cm (18″) deep, incorporating a generous amount of finished compost. Also dig in bone meal. At transplant time, dig ¼ cup balanced organic fertilizer into the soil beneath each plant. Space vines at 15cm (6″) and provide trellis support. Mulch around plants to keep the soil as cool as possible, and water during dry weather. Keep plants picked to prolong the blooming period.