Policeman's-helmet

Succeeds in any reasonably good soil. Grows well in heavy clay soils. Prefers a moist well-drained humus rich soil in a cool site. Self sows in areas where the minimum temperature is no lower than -15°c. This plant has seed capsules that spring open forcibly as the seed ripens to eject the seed a considerable distance. The capsules are sensitive to touch even before the seed is ripe, making seed collection difficult but fun[K]. References Carbon Farming Information and Carbon Sequestration Information Temperature Converter Type a value in the Celsius field to convert the value to Fahrenheit: Celsius Fahrenheit: The PFAF Bookshop Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants , Edible Perennials , Edible Trees , Edible Shrubs , Woodland Gardening , and Temperate Food Forest Plants . Our new book is Food Forest Plants For Hotter Conditions (Tropical and Sub-Tropical) . Shop Now

Edible Parts: Leaves Oil Oil Seed Shoots Edible Uses: Oil Oil Young leaves and shoots - cooked[172, 183]. They should not be used on a regular basis, see warning at top of record. Seed - raw[105, 177]. A delicious nutty flavour, but difficult to harvest in quantity mainly because of their exploding seed capsules which scatter the ripe seed at the slightest touch[K] An edible oil is obtained from the seed[17, 177, 183]. References More on Edible Uses

Seed - sow spring in a greenhouse. A period of cold stratification may help to improve germination rates. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. If you have sufficient seed, it is worthwhile trying an outdoor sowing in situ in the spring.