Silverweed (Potentilla anserina), known for its soft, silvery leaves and low-growing habit, is a widespread and easily recognisable plant with a rich foraging history. Once a staple wild food, this humble plant was valued for its starchy roots and has a quiet place in the story of Britain’s traditional diet.

Overview

Latin Name: Potentilla anserina
Common Names: Silverweed, Goosegrass, Wild Tansy, Silverweed Cinquefoil

Natural Habitat

Silverweed thrives in compacted or disturbed soils and is commonly found in:

Grassy paths and roadsides
Damp meadows and pastureland
Riverbanks and lake edges
Coastal areas and sand dunes

It spreads easily via creeping runners and prefers moist, well-drained soils with plenty of sunlight.

Identification

Leaves:
Long, feather-like leaves with deeply toothed leaflets. The underside of the leaves is covered in silvery-white hairs, giving the plant its name. They grow in a basal rosette close to the ground.

Flowers:
Bright yellow, five-petalled flowers appear singly on slender stalks from late spring to mid-summer. They resemble small buttercups.

Roots:
Thin, carrot-shaped roots that are white or creamy and become woody with age. Best dug when the plant is dormant (late autumn to early spring). Only on private land with owners permission!

Height:
Usually less than 15cm tall, with long creeping stems that root at the nodes.

Edibility and Medicinal Uses

Silverweed was once cultivated for its edible roots, particularly in the Scottish Highlands and parts of Scandinavia. Though rarely used today, it remains a valuable wild food for foragers interested in forgotten crops.

Culinary Benefits

Roots:

Can be roasted, boiled, or baked
Taste is similar to parsnip or chestnut, though more fibrous
Traditionally harvested in late autumn or early spring when the starch content is highest

Leaves:
Not typically eaten due to their bitter taste and fuzzy texture, but were once used sparingly in folk teas or as emergency greens.

Medicinal Benefits

Historically, Silverweed was used in folk medicine for:

Menstrual cramps and childbirth support – leaf infusions were used as a mild uterine relaxant
Digestive discomfort – the astringent properties of the plant were used to ease diarrhoea and inflammation
Wound care – mashed leaves applied as a poultice for minor skin issues

While scientific backing is limited, these uses highlight the plant’s astringent and soothing nature.

Preparation and Uses

Root Preparation:

Dig up in autumn or early spring
Wash thoroughly and remove any fibrous outer skin
Roast, boil, or slow-bake to bring out a mild, nutty sweetness
Can also be sliced thin and dried for later use

Tea:
A tea made from dried or fresh leaves is mildly astringent and can be taken in small amounts.

Foraging Tips

Best Harvesting Season:

Roots: October to March, when the plant is dormant
Leaves and flowers: May to August

Sustainability:

Harvest roots only where the plant is abundant
Always leave some plants undisturbed to allow regrowth
Only dig on private land with permission – root foraging is not allowed on public land

Pro Tip:
Look for plants growing in compacted soil along grassy tracks and gateways – these often have the largest, starch-rich roots.

Folklore & History

Silverweed was once called “traveller’s food” due to its presence along old roads and tracks. In medieval Britain, its roasted roots were eaten like potatoes. It was also known as “goosegrass” because it was favoured by grazing geese.

Folklore suggests it was planted outside cottages to protect against lightning and bring peace to the home.

Safety Precautions

Root Identification: Always confirm the plant before digging. Silverweed is low-growing and distinctive, but roots of lookalike plants (e.g., Cinquefoils or potentillas) may be too small or unpalatable.
Moderation: As with all wild plants, consume in moderation, especially if you’re trying it for the first time.

Conclusion

Silverweed is a forgotten wild food with a deep history in the British Isles. Though it no longer graces our plates as it once did, foragers can still appreciate its quiet resilience and the earthy, chestnut-like flavour of its roots.