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Medieval herb garden blog 55: Cinquefoil

Thursday, January 29, 2026

Week 55 volunteer update

Another cold, dank and dreary day.  The ground was still saturated. Caroline and Louis swept up more leaves from the sallyport. Meanwhile Carole, Helen and Kim weeded the rosemary wall. Weeding in cold, wet soil meant we had to take it in turns to go run our hands under hot water to get the feeling back in them!

Despite the weather, we had a lot of visitors to Pontefract Castle. One lovely couple had come from Lichfield in Staffordshire. We chatted with them about All Saints Church, which can be seen from the castle. They proudly informed us that Lichfield Cathedral is the only one in the country with three spires!

Plant of the week: Cinquefoil (potentilla reptans)

'Potentilla reptans' comes from the Latin 'Potentilla', a diminutive of 'potens'. This means 'powerful'. 'Reptans' comes from 'repere', meaning 'to creep'.

The common name 'cinquefoil' ('cinqfoil' in Old French) refers to the typically five leaflets on its leaves. It comes from 'cinq' (five) and 'foil' (leaf).

Its other names are creeping potentilla, five-leaf grass, five-finger blossom, synkefoyle and sinkfield.

Cinquefoil is native to Europe, Asia and Africa. It is a common, low-growing, stoloniferous, perennial plant. It will grow in any well-drained soil of any acidity level. It grows in any aspect, as long as it is in full-sun to partial-shade.

Dark red / brown stems with green leaves featuring five leaflets growing along it

Cinquefoil growing in the Medieval Herb Garden

Cinquefoil has low-lying stems, 4 to 6 inches (10 to 15cm) high. It has trailing, hair-like runners. These often grow up to 5 feet (1.5 m) long. They can root at the nodes, which allows the species to spread uncontrollably.

Cinquefoil grows palm-like leaves, which are 1.5 inch (4 cm) long. The leaves are attached to long stalks and are divided into five to seven leaflets. They have small green leaf-like stipules at the base. The edges of the leaflets are very serrated (jagged).

Cinquefoil flowers between June and September. The yellow flowers are up to 0.5 inches (1.2 cm) wide, with five notched petals.

A large green cinquefoil plant with runners hanging over the drystone wall on the edge of the Medieval Herb Garden

Cinquefoil runners hanging down the Medieval Herb Garden wall

Each plant puts down a taproot. This can easily reach a depth of 1 ft (30 cm). New plants are able to grow from small sections of broken taproot. This, when combined with the plants’ runners, make it the most insidious "weed" in the Medieval Herb Garden.

Just before the Covid lockdowns in 2020, cinquefoil had taken a toehold in the MHG. It 'hid' in the wild strawberries, as it looks very similar. No gardeners were allowed into the MHG during this time and the cinquefoil ran amok! By the time the lockdown restrictions had been lifted, cinquefoil had run rampant through the entire MHG. In the end, everything in half of the lower portion of the garden had to be chemically treated (herbs and all) in order to try and destroy it.

To date, we are still struggling to eradicate this pernicious thug.

The Medieval Herb Garden having been overtaken by cinquefoil, creating a carpet of green leaves that stopped anything else growing

The quarter of the Medieval Herb Garden which was totally destroyed by cinquefoil

Culinary uses of cinquefoil

The young leaves of cinquefoil have a “slightly sour-to-bitter aromatic” taste. They are often described as having a 'herby' flavour. The leaves are best used finely-chopped in salads or cooked into purees. They can also be cooked as a leafy green, similar to spinach.

The raw roots can be bitter. When cooked (boiled or roasted), the roots can taste nutty and starchy. The cooked roots are often compared to parsnips or sweet potatoes.

The dried rhizome is used for teas. It has an earthy, slightly woody flavour with a mild astringency.

The bright yellow flowers are said to have a pleasant sour-sweet taste. They are used as a garnish.

Use of cinquefoil as a dye plant

The roots of cinquefoil produce a red or reddish-brown dye. This was traditionally used for colouring leather.

Before the introduction of synthetic dyes, this natural red dye was important economically.

Folklore and other facts about cinquefoil

Cinquefoil was a popular feature in church architecture. It was often used in windows and arches in Normandy and Brittany throughout the 1400s.

It was believed to protect travellers. It was hung above doorways to ward against witches and evil. It was also thought to bring luck in love, health, power and wisdom. Cinquefoil was used in medieval love potions and for romantic divination.

In heraldry, the five-fingered leaf represented strength, power, honour and loyalty. Only medieval knights who had achieved “self-mastery” were permitted to use the five-leaf emblem on their shield.

In the Victorian language of flowers, it signified 'beloved daughter'.

It was thought that frogs liked to sit on cinquefoil, whilst toads preferred to sit under sage.

Cinquefoil is a good plant for pollinators. The grizzled skipper butterfly (Pyrgus malvae) uses it as food for its caterpillars.

Medieval medicinal uses of cinquefoil*

Cinquefoil was used for all inflammations and fevers whether “infectious or pestilential”. It was also a remedy for wounds, sore mouths, toothache, ulcers, cancers, diarrhoea, running sores and St Anthony’s Fire. It was used for jaundice, shingles and stopping bleeding. It “comforteth the stomach and liver”.

Once boiled in wine, it was applied to painful joints. This was drunk as a cure for gout and sciatica.

*As always, this isn't to be considered medical advice today. Please don't use any plants mentioned in these blogs as medicine without advice from a doctor.

Medieval herb garden blogs

Browse all blogs by our dedicated team of volunteer gardeners at Pontefract Castle. Discover a different 'Plant of the Week'.

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