Sweet pea (Lathyrus odoratus) is a climbing flower with a strong fragrance. Here are step-by-step germination and growing instructions from seed.
Preparing the seeds
Soak the seeds in lukewarm water for 12–24 hours, or lightly nick the seed coat with a nail file. This helps them sprout faster and more evenly.
Sowing and planting depth
Sow in October–November or in early spring, in rich, well-draining soil. Plant 1.5–2 cm deep, 15–20 cm apart.
Temperature
It germinates best at 13–18°C, in 10–20 days. It does not like excessive heat.
Watering and light
Water when the soil surface dries out, without leaving standing water. It needs sun and a support (trellis or string) to climb.
Note: the seeds are not edible.
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