Lavender Sweet Pea (Lathyrus odoratus) - purple flowers, illustrated plant card

Lavender Sweet Pea

Lathyrus odoratus

Lavender Sweet Pea blooms from May through July.

Bloom calendar
Bloom time
May–Jul
Hardiness
Zones 2–11
Sun
Full sun
Water
Moderate water
Mature size
5.9 ft × 1.3 ft
Type
Annual
Verification

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Growing Lavender Sweet Pea

Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 2–11. Expect it to reach about 5.9 ft tall and 1.3 ft wide at maturity, in roughly 1 year.

When to plant Lavender Sweet Pea

Wait until all danger of frost has passed, then plant out Lavender Sweet Pea into warm soil; in most zones that means late spring. Planted then, it flowers from May to July.

Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 6 in April.

The Sweet Pea family

One of 6 in the Sweet Pea family. Same plant, same care.

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