Lavender sweet pea / Lathyrus odoratus - is a climbing annual growing to a height of 1-2.5 m when suitable support is provided. Root system of rod type, deep, weakly branching.
The leaves are paired, consisting of two or three pairs of leaflets, ending in a tendril that clings to other plants that serve as its support.
The inflorescence is a few-flowered raceme emerging from the axils of the leaves. The flowers are irregular, quintuple type. The petals are lilac, 2-3 cm wide in wild plants, larger and very variable in color in many cultivated ones. The flower has a strong pleasant smell.
The calyx consists of five fused sepals; stamens 10, of which 9 fused; pistil one, ovary upper multi-seeded.
The fruit is a bean that opens in two leaves. The seed is spherical, large (4-5 mm), sometimes squeezed from one or two sides; the surface is slightly rough, without a pattern.
Grows fast. The flowers are fragrant, collected in a brush of 5-8 pieces, strong peduncles 35-45 cm long.
It is often grown in gardens as an ornamental plant because of the bright flowers and fragrant aroma that gives it its name. Sweet peas are grown as a climbing plant when landscaping arbors, fences, to create tall forms in flower beds or against the background of lawns, it goes well with nasturtium, morning glory. Cut flowers are decorative for a long time.
Sweet pea grows well in bright, sunny, open places and on humus-rich, neutral soils.
Seeds usually germinate in 14-15 days, but there may be a part of seeds that do not germinate for a long time, completely healthy-looking seeds, the so-called. "glass"; to speed up their germination, it is enough to pierce the seed coat with a needle or use a growth stimulator. The optimum temperature for germination is 20°C.
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