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Nepeta, the catgrass plant

Nepeta with cat
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Crumple a leaf and a soft aniseed scent rises from foliage much like mint’s, topped from May to October by spires of blue flowers. Nepeta, also known as catnip, catmint or catgrass, feeds bees, flavours infusions and sends cats into euphoria; give it full sun and well-drained soil and it returns every spring.

Nepeta at a glance
Name Nepeta
Family Lamiaceae
Type perennial
Height 16 to 32 inches (40 to 80 cm)
Exposure full sun
Soil light, well-drained
Blooming May to October

Also called catgrass, catnip and even catmint because its leaves look like those of mint, it makes our feline friends a bit tipsy.

Planting Nepeta

How to plant nepeta

You can plant your nepeta starting in October and all the way to May-June, keeping a distance of 10 to 12 inches (25 to 30 cm) between plants.

  • Nepeta likes full sun but it also tolerates part sun.
  • It appreciates well drained soil, even poor.
  • Being planted in the sun is when nepeta is at its best in terms of flavor.

Propagating nepeta

Nepeta is propagated through sowing at the end of winter, in a crate and at a T° of more or less 65°F (18°C).

  • Maintain the substrate a little moist.
  • Good light but no direct sunlight.
  • Transplant once in nursery pots sometime in April.
  • Transfer to the ground starting from the month of May.

You can propagate nepeta in spring or fall through crown division.

Nepeta task by task, and when to do it

Nepeta asks for very little, but each job has its own window in the year. Here is what to do, when, and how to go about it.

Nepeta task by task, and when to do it
Task When How to go about it
Planting October through to May–June Space plants 10 to 12 inches (25 to 30 cm) apart in well-drained soil
Sowing End of winter In a crate at around 65°F (18°C), substrate kept slightly moist, good light but no direct sun
Transplanting seedlings April, then May Pot on into nursery pots in April, move to the ground from May
Crown division Spring or fall Lift and divide established clumps to make new plants
Harvesting leaves Spring and summer, in the morning Pick during the growth phase, once the plant carries plenty of leaves

Dried leaves keep for several months, so a summer harvest will see you through to the following season.

Watering nepeta

This plant copes well with having a lot of sun, but must be watered in case of elevated temperatures or extended dry spell.

If growing it in pots, don’t wait for the soil to be completely dry before watering again; simply water often but in moderate amounts.

  • Newly planted nepeta needs regular watering until its roots take hold; once established, a clump in open ground gets by on rainfall alone.
  • Nepeta is drought-tolerant but prone to root rot in waterlogged soil, so plant it in well-drained conditions and empty the saucer beneath a potted specimen after each watering.

Harvesting nepeta leaves

Nepeta, catnip leaves
Pick leaves in the morning for infusions

Nepeta cataria leaves are preferably collected in the morning during its growth or vegetation phase.

Spring and summer is often when the harvest takes place, but it can also be conducted as long as your nepeta are densely furnished to prepare delicious nepeta infusions and herbal teas

  • Wait for the plant to have grown quite a bunch of leaves before harvesting for the first time.
  • Dried nepeta leaves keep very well, they can last several months.

Note that when you crumple nepeta flowers and leaves, they produce a soft aniseed-like fragrance that is very pleasurable.

Which nepeta to choose: the main varieties compared

From knee-high border workhorses to compact mounds for pots and the true herbal catnip, nepetas differ mainly in flower colour, size and what you want them for. The table below sets the widely sold varieties side by side.

Which nepeta to choose: the main varieties compared
Variety Flower colour Habit Flowering Best for
‘Six Hills Giant’ Lavender-blue Tall, vigorous Early summer to autumn Large borders, informal path hedging
‘Walker’s Low’ Lavender-blue Medium, arching Early summer to autumn Underplanting roses, long edging
‘Purrsian Blue’ Periwinkle blue Dwarf, rounded Summer Neat low edging, small gardens
‘Blue Wonder’ Deep blue Low, spreading Summer Ground cover, easy from seed
Lemon catnip ‘Citriodora’ White, pink-flecked Tall, upright Summer Lemon-scented leaves for tea
‘Little Titch’ Lavender-blue Dwarf, cushion Summer Rockeries, troughs, balcony boxes
‘Dropmore’ Lavender-blue Medium Summer Bee borders, cold gardens
‘Snowflake’ White Low, spreading Summer White and pastel schemes
‘Junior Walker’ Lavender-blue Dwarf, compact Summer to autumn Front of border, no self-seeding
‘Cat’s Pyjamas’ Deep indigo-blue Dwarf, dense mound Summer to autumn Containers and tidy edging
‘Dawn to Dusk’ Soft pink Medium to tall Summer Cottage borders, cut flowers
‘Souvenir d’André Chaudron’ Large violet-blue Medium to tall, spreading Mid to late summer Bold colour in roomy beds

All there is to know about nepeta

Nepeta flower
Suits the back of beds, edges and rockeries

Nepeta is also called Catnip or, more frequently still, Catgrass. It indeeds has the power of attracting cat folk because it induces euphoria.

About 2 out of 3 cats are sensitive to the euphoria-inducing effects of nepeta. Whether it simply rubs against it, rolls over in it, chews it or licks it, for sure it gives the cat a few minutes of excitement and joy that transport it to a better world! Purring and meowing illustrate this situation that luckily doesn’t have any side effects.

Also very ornamental and simply of a high value as a spice, this plant is also used simply to decorate the garden and cook delicious flavorful meals, infusions and herbal teas.

A honey-bee plant, nepeta will be fine at the back of a flower bed or along edges, in a rocky pile or sand patch, and even fit right into a garden box on your balcony or terrace.

Smart tip about nepeta

It is quite a good replacement for lavender in regions where the climate is damp and cold.

It’s more hardy than both lavender and French lavender, in that its root system will always enable it to grow back from scratch in spring.

 


Credits for images shared to Nature & Garden (all edits by Gaspard Lorthiois):
Cat with nepeta (also on social media) by CatCrazy under Pixabay license
Nepeta leaves by Rebeck96 under Pixabay license
Nepeta flowers by Martina under Pixabay license

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