Sison segetum aka Corn Caraway

Sison segetum is in Apiaceae, the carrot family. People call it corn parsley or corn honewort. The garden sources use the name Petroselinum segetum. Plants For A Future lists another name, Carum segetum. Its native range covers west and southwest Europe. It extends into central Italy. The RHS says it is native to Britain and Ireland. Plants For A Future lists Britain, Belgium, and the Netherlands. It also lists France, Spain, Portugal, and Italy.

This short-lived herb grows in temperate regions, which have mild climates. Kew calls it annual or biennial: it lives one or two years. Plants For A Future calls it biennial. It gives a height of 3.3 feet [1 metre]. The sources give no separate height range for garden plants. They give no width at full growth. In the wild, it grows in hedgerows and grassy ground. These sites help guide its place in a garden. Plants For A Future lists meadows and hedgerows as garden settings.

Plants For A Future gives August to September as flowering time. Each flower has both male and female organs. Insects pollinate the flowers. The plant can also set seed with its own pollen. The species sources do not describe its fruit. They give no leaf or stem details for this species. The RHS pages describe the broader plant groups, or genera. Those accounts do not prove this species has those traits.

Plants For A Future says to grow it in sun or light shade. It prefers moist soil that drains well. It can grow in sand, loam, or clay. Its stated soil pH range is mildly acid to mildly alkaline. Sow seed in late spring where the plants will grow. The sources give no hardiness zone or frost limit. They name no pest or disease problems. The source does not flag it as a weed.

Plants For A Future records its use to add scent and flavour to food. It gives food use a low score but names no edible part. It warns that the plant may contain myristicine. This warning gives no safe serving size or way to prepare it. The source lists no known medical or other uses. The evidence does not show that the plant is safe in general. Nor does it support advice to use it as medicine.