Description
Species Information
Perennial sweet pea (Lathyrus latifolius), also known as the broad-leaved everlasting pea, white pearl, or everlasting sweet pea, is a vigorous climbing garden plant from the pea family (Fabaceae). Unlike annual sweet peas such as Lathyrus odoratus, this hardy perennial returns reliably year after year, producing elegant pink, pea-shaped flowers from mid to late summer.
Everlasting sweet peas grow quickly from ground level to around 2 metres, with winged stems that scramble through supports, hedges and neighbouring plants. Ideal for sunny walls, trellises and the back of borders, it brings height, softness and long-season colour to both informal and wildlife-friendly gardens.
A valuable nectar source, Lathyrus latifolius attracts pollinating insects, including bumblebees and butterflies, helping to support local biodiversity. Flowering is followed by flat seed pods, adding further seasonal interest. The long stems also make excellent cut flowers.
How to Identify
Perennial sweet pea has paired, oval leaflets with climbing tendrils. Flowers are typically soft pink with deeper veining and are larger but less fragrant than annual sweet peas. After flowering, flattened seed pods develop along the stems.
How to Grow
Lathyrus latifolius grows best in full sun, but will also tolerate partial shade. It prefers fertile, moist but well-drained soil, though it adapts well to poorer soils and waste ground once established. It has a strong, deep root system, making it resilient and drought-tolerant over time.
Plants can be grown from seed, seed trays, or purchased as young plants from garden centres. Cut plants back to ground level in late autumn or early spring to encourage fresh growth. With minimal care, this perennial sweet pea is a long-lived, low-maintenance climber that rewards year after year.









