Peucedanum palustre aka Peucedanum Palustre

Peucedanum palustre belongs to the carrot family, Apiaceae. Its common names include milk parsley and marsh hog's fennel. Other names include brimstone wort and milkweed. Its native range spans Europe and reaches central Siberia. It is native to Britain and Ireland as well. This is a plant of temperate regions. It grows in fens and marshes, often on lime-rich soils.

This biennial reaches about 5 feet [1.5 metres] tall. Its height makes it useful for group plantings in wild gardens. It also suits bog gardens with enough room for that height. Flowers appear from July through September. Each flower has both male and female organs. Bees, flies, moths, butterflies and beetles pollinate the flowers. The plant is also self-fertile, so it can use its own pollen.

Choose a sunny site with soil that holds moisture. The plant also tolerates light shade, such as open woodland. It prefers moist or wet ground rather than dry soil. Sand, loam and clay can all support its growth. Soil pH can range from mildly acid to very alkaline. Its wild habitat on lime-rich ground fits that tolerance. Plants For A Future describes it as easy to grow. That source lists USDA hardiness zones 5–9.

Seed offers a way to raise new plants. Plants For A Future suggests sowing in a cold frame. Sow when seeds ripen, or try sowing in early spring. Move seedlings into separate pots once large enough to handle. Plant them outside in summer after this pot stage. The source presents this as a suggested approach. It notes that it lacks propagation details for this species.

The root has a recorded use as a ginger substitute. Plants For A Future gives its food value one out of five. The same source gives its medicinal value one out of five. It records past use of the root as a stimulant. It also records use for epilepsy, not proof of benefit. These records do not establish that home treatment is safe. The source reports no species-specific account of toxicity. That lack of information does not establish safety for people or pets.