Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta faassenii Six Hills Giant - Catnip
Nepeta x faassenii Six Hill s Giant
Faassen's catnip, Catmint
Very well flowered, at the foot of a columnar plum tree, in full sun and drought. Perfect.
Gazz., 24/09/2025
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Description
Robust and easy to grow, Nepeta 'Six Hills Giant' blooms from May to October with regular deadheading.
This variety has a mildly suckering growth habit and forms bushes that can grow up to 50cm (19.7 in) tall and 60cm (23.6 in) wide. It produces many lavender-blue flowers, each 5cm (2 in) in length, on its inflorescence, which attract bees and butterflies. The grey leaves, resembling mint, give off a delightful aroma that is known to attract cats.
A versatile plant, Nepeta 'Six Hills Giant' thrives in sunny, rocky, and nutrient-poor soils. While it prefers moist soil, it adapts to summer drought by reducing its flowering.
Nepeta faassenii Six Hills Giant - Catnip in pictures
Flowering
Foliage
Plant habit
Botanical data
Nepeta
x faassenii
Six Hill s Giant
Lamiaceae
Faassen's catnip, Catmint
Cultivar or hybrid
Planting and care
The Nepeta, 'Six Hills Giant', is a plant that can thrive in any terrain. It grows best under sunlight, even in light, poor and stony soils. Although it prefers moist soils, it can adapt to the summer drought by reducing its flowering. If planted in heavy soils, it's recommended to dig a hole that is three times larger than the volume of the bucket and mix 1/3 gravel and 1/3 sand with your topsoil to lighten the soil. This will prevent water stagnation in winter. To ensure the plant stays healthy, you should cut back the faded inflorescences in the middle of summer to a height of 20cm (7.9 in) using shears. This will make the plant more compact and flower again in autumn.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
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In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.