Lathyrus odoratus 'Winter Sunshine White' – Winter-flowering cut flower sweet pea with pure white flowers

Lathyrus odoratus 'Winter Sunshine White' is an exceptional selection of scented sweet peas, specially developed for professional greenhouse production of cut flowers in early spring. This variety combines vigorous winter growth, long, sturdy stems, and numerous large, billowing flowers in a bright, pure white. This makes it ideal for growers who want to harvest high-quality flowers in winter and early spring, even in cool greenhouse conditions and limited light levels.

Winter flowering thanks to short-day selection

Unlike traditional summer-flowering Lathyrus odoratus varieties, 'Winter Sunshine White' was selected for winter flowering under short-day conditions. While summer-flowering varieties require 12 hours of daylight and spring varieties 11, winter varieties like this one bloom even with 10 hours of daylight. This allows flowers to be produced as early as late autumn and early winter, giving growers a head start on the regular flowering season.

Impressive growth characteristics

This winter selection is distinguished by vigorous early growth, which continues even during the dark winter weeks. Each stem can bear 5–6 large flowers, developed on sturdy, wavy stems. The pure white flowers create a fresh, elegant look, perfect for bouquets, flower arrangements, and luxurious spring flower arrangements. Thanks to the long, straight stems, the flowers are excellent cut flowers, retaining their strength and elegance even after intensive picking.

'Winter Sunshine White' has different growth characteristics than regular sweet pea varieties and therefore requires specific cultivation methods, such as sufficient space and stem support for optimal flower development. Regularly picked flowers also stimulate new blooms and significantly extend the harvest period.

Cultivation and care

For optimal germination, it's important to soak the 'Winter Sunshine White' seeds in lukewarm water beforehand. Depending on the desired harvest time, sowing can take place at different times:

• Sow in mid-September for early spring production

• May sowing for autumn flowers

This winter selection is more vigorous than many other winter varieties and grows well in cool, low-light greenhouses, making it ideal for professional cut flower production under challenging conditions.

Application and benefits

'Winter Sunshine White' is perfect for:

• Professional cut flower cultivation in greenhouses during winter and early spring

• Early harvest for spring bouquets and flower arrangements

• Home gardeners who want to harvest fragrant flowers early in the season

• Arrangements with fresh, elegant spring colours

The pure white flowers create a classic and refined accent that combines beautifully with soft pastel colors like pink, lavender, and cream. Moreover, this fragrant sweet pea attracts bees and butterflies, contributing to biodiversity in the garden or greenhouse environment.

Why choose Lathyrus odoratus 'Winter Sunshine White'?

• Winter flowering under short-day conditions

• Vigorous early growth under low light levels

• Long stems with 5–6 large flowers per stem

• Pure white flowers of high quality

• Ideal for cut flowers and professional use

• Flexible sowing schedule for autumn and winter production

With its fresh color, sturdy stems, and reliable winter flowering, Lathyrus odoratus 'Winter Sunshine White' is an excellent choice for those who want to enjoy fragrant, high-quality sweet pea flowers early in the season.