Water parsnip is a North American native perennial from the carrot family that thrives in wet places where most vegetables would fail. Growing 2 to 6 feet tall with deeply divided, feathery green foliage and showy white flowers from July through September, this moisture-loving plant transforms boggy margins and rain gardens into productive growing spaces. Hardy from zones 3 to 9, water parsnip reaches maturity 24 to 72 inches tall and spreads 24 to 36 inches, making it a substantial presence in wet meadows, stream edges, and deliberately flooded garden areas. The edible rootstock can be divided in early spring, and plants readily self-seed in ideal conditions, offering both culinary reward and ecological resilience.
Partial Sun
Moderate
3-9
72in H x 36in W
—
Low
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Water parsnip solves a real gardening problem: it actually wants to grow in the soggy, waterlogged spots that defeat ordinary vegetables. Native across North America from Newfoundland to California, it produces hollow central stalks clothed in compound leaves and sends up showy flower clusters that bloom all summer long. The edible roots can be propagated by division each spring, and in consistently wet conditions, the plant reproduces itself through prolific self-seeding. This is not a delicate cultivar requiring coddling; it thrives on neglect once established in its preferred boggy habitat.
Water parsnip serves as an edible root vegetable adapted specifically to wetland gardening and rain gardens. The edible rootstock can be harvested and used as a culinary ingredient in kitchens comfortable with foraged or specialty vegetables from wet environments.
No timeline data available yet for this variety.
Harvest the edible rootstock as needed once the plant is established. The roots can be dug in early spring before new growth emerges or in fall after the foliage matures. Extract the entire root system carefully and divide it to propagate new plants, or trim and use the roots fresh in the kitchen.
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