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Mentha pulegium

Pennyroyal

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does flower in July

Plant does flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Mentha pulegium
  • Common name: Pennyroyal
  • Family: Lamiaceae
  • Plant Type: Bog, Herb, Marginal, Perennial, Pond
Flower colour:

Purple

Foliage colour:

Green

Creeping pennyroyal, Mentha pulegium, is a traditional cottage garden plant in the mint family. Typically found in marshy soils, ditches and around the edges of ponds, it’s a moisture-loving plant, and does best when grown in damp conditions.

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Its dark green leaves have a strong peppermint aroma, and release their fragrance when rubbed or crushed underfoot. Spreading by adventitious roots, pennyroyal will quickly cover the ground, making it a great alternative to the traditional grass lawn, particularly in damp, shady gardens. Let the plants spill over pathways so you release their heady aroma as you walk along.

From mid to late summer, pretty lilac-blue flowers appear on stout stems, which attract bees and other pollinators.

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Despite its traditional uses as a medicine and culinary herb (often used as a seasoning for pork dishes), pennyroyal is rarely used as such today. Its flavour is considered far too strong for our palates. However, the leaves may be infused in hot water to make a strong mint tea.

How to grow Mentha pulegium

  • Plant size

    10cm height

    60cm spread

  • Aspect

    South facing, west facing

  • Position in border

    Front, middle

  • Sun exposure: Dappled shade, full sun
  • Hardiness: Hardy
  • Soil type: Clay / heavy / moist

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow
Sow

Do not Sow in January

Do not Sow in February

Do Sow in March

Do Sow in April

Do Sow in May

Do not Sow in June

Do not Sow in July

Do not Sow in August

Do not Sow in September

Do not Sow in October

Do not Sow in November

Do not Sow in December

Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does flower in July

Plant does flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do Divide in March

Do Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do Divide in September

Do Divide in October

Do Divide in November

Do not Divide in December

Take cuttings
Take cuttings

Do not Take cuttings in January

Do not Take cuttings in February

Do not Take cuttings in March

Do not Take cuttings in April

Do not Take cuttings in May

Do Take cuttings in June

Do Take cuttings in July

Do not Take cuttings in August

Do not Take cuttings in September

Do not Take cuttings in October

Do not Take cuttings in November

Do not Take cuttings in December

Prune
Prune

Do not Prune in January

Do not Prune in February

Do not Prune in March

Do not Prune in April

Do not Prune in May

Do not Prune in June

Do not Prune in July

Do not Prune in August

Do Prune in September

Do Prune in October

Do Prune in November

Do not Prune in December

Harvest
Harvest

Do not Harvest in January

Do not Harvest in February

Do not Harvest in March

Do not Harvest in April

Do Harvest in May

Do Harvest in June

Do Harvest in July

Do Harvest in August

Do Harvest in September

Do not Harvest in October

Do not Harvest in November

Do not Harvest in December

Mentha pulegium and wildlife

Mentha pulegium is known for attracting bees and other pollinators. It has nectar/pollen rich flowers.

Attractive to Bees

Does not attract Beneficial insects

Does not attract Birds

Does not attract Butterflies​/​Moths

Attractive to Other pollinators

Is Mentha pulegium poisonous?

Mentha pulegium can be toxic.

Toxic to:

Toxic to Cats

Toxic to Dogs

Toxic to Horses

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Mentha pulegium