Cow Parsnip

Heracleum sphondylium montanum

Physical Characteristics

Heracleum sphondylium montanum is a PERENNIAL growing to 2.4 m (7ft 10in). See above for USDA hardiness. It is hardy to UK zone 5 and is not frost tender. It is in flower in July, and the seeds ripen in August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil.

Distribution

N. America to W. Asia.

Habitats

Woodland Garden Dappled Shade; Shady Edge; not Deep Shade;

Edible Uses

Edible Parts: Flowers Leaves Root Shoots Stem Edible Uses: Condiment Salt Root - cooked[2, 46, 85, 94]. Tastes like a swede[155, 183]. Used like potatoes, though it is considered to be poisonous by some writers[213]. The peeled stem can be eaten raw but is best cooked[2, 61, 183]. The unpeeled stem can be used when young, or just the inner tissue of older stems can be used, before the plants flower[85, 94]. For people not used to the flavour, they are best cooked in two changes of water when they make a tasty celery-like vegetable[213]. Another report says that, despite the strong odour of the leaves and outer skin, the peeled young stems are mild and sweet, resembling celery in flavour[256]. The stems cannot be eaten raw in large quantities because they give a burning sensation in the mouth[257]. The stems are highly nutritious, containing up to 18% protein[213]. Leaves and young shoots - raw or cooked[55, 85, 94, 118]. Cooked as greens or added to salads[183]. Young flowers[46, 61, 105]. No further details. The dried seeds are used as a flavouring for soups, stews and potato salads[85, 183]. The dried base of the plant and ashes from the burnt leaves are used as a salt substitute[183].

Medicinal Uses

Antidandruff Antirheumatic Antispasmodic Carminative Epilepsy Febrifuge Odontalgic Stimulant TB Tonic Cow parsnip was widely employed medicinally by a large number of native North American Indian tribes who used it to treat a wide variety of complaints, but especially as a poultice on bruises, sores etc. It is little used in modern herbalism, though perhaps it merits further investigation. All parts of the plant are antirheumatic, antispasmodic, carminative, febrifuge, odontalgic and stimulant. The leaves are tonic. They have been used in the treatment of colds. A soothing drink made from the leaves is used to treat sore throats. A poultice of the heated leaves has been applied to minor cuts, sore muscles etc. An infusion of the fresh young stems has been used in the treatment of diarrhoea. It has also been used as a wash to remove warts. The plant has been used in the treatment of epilepsy. A tea made from the roots is used in the treatment of indigestion, colds, stomach cramps, rheumatism, sore throats, TB etc. Externally, the root is used as a poultice on sores, bruises, swellings, boils, rheumatic joints, VD scabs etc, whilst a bit of root has been held on an aching tooth to reduce the pain. The root can be crushed, mixed with water and used as an antidandruff hair wash. The root contains psoralen, which is being investigated for its use in the treatment of psoriasis, leukaemia and AIDS. The seed has been used to treat severe headaches.

Known Hazards

Many members of this genus, including this species[65], contain furanocoumarins. These have carcinogenic, mutagenic and phototoxic properties. The fresh foliage can cause dermatitis[21]. If the juice and hairs of the outer skin are left on the face and mouth, they can cause blisters[212]. This effect is especially prevalent for people with fair complexions[256].