Six Hills Giant Catmint

Six Hills Giant Catmint (Nepeta x faassenii 'Six Hills Giant') is one of the most beloved and widely planted perennial catmints available — a magnificent, large-growing cultivar producing a spectacular mass of soft lavender-blue flower spikes above a generous, billowing mound of fragrant silver-green aromatic foliage that creates an unforgettable, cloud-like display in mixed perennial borders, cottage gardens, and low-water landscape plantings from late spring through summer. Named after the celebrated Six Hills Nursery in England where it was first selected, this outstanding cultivar is prized for its exceptional size, prolific flowering, irresistible fragrance, and extraordinary drought and heat tolerance that has made it a cornerstone perennial in organic gardens across North America and Europe for generations.

Grown from certified organic heritage stock, each plant arrives with a Professional Grade root system — deep, fibrous, and fully established for vigorous first-season performance. Six Hills Giant thrives in full sun with excellent drainage and is highly drought tolerant once established, excelling in water-wise, Mediterranean-style, fire-resistant, and low-maintenance organic landscapes. Its large, billowing silver-green mound pairs beautifully as a border edge plant, mass planting, rose garden companion, and pollinator garden anchor — while its soft lavender-blue flower spikes are among the most productive and attractive blooms available for bees, butterflies, and beneficial insects throughout the long summer bloom season.

• Spectacular Large-Scale Lavender-Blue Display — Produces an extraordinary mass of soft lavender-blue flower spikes above a generous billowing mound, creating one of the most beautiful and impactful large-scale perennial displays available in the organic garden.
• Exceptional Drought Tolerance — Among the most drought tolerant catmint cultivars available, Six Hills Giant thrives with minimal supplemental irrigation once established, making it essential for water-wise, xeriscape, and fire-resistant organic landscapes.
• Premier Bee & Pollinator Plant — Soft lavender-blue flower spikes are among the most attractive and productive blooms available for honeybees, bumblebees, native bees, butterflies, and beneficial insects throughout the long summer bloom season.
• Fragrant Silver-Green Aromatic Foliage — Intensely aromatic silver-green foliage releases a clean, herbaceous fragrance when brushed or disturbed, providing sensory garden interest throughout the entire growing season beyond the bloom period.
• Outstanding Rose Garden Companion — Billowing silver-green mounds and soft lavender-blue blooms are the classic, time-honored companion for roses in cottage and formal garden settings, softening borders and complementing every rose color palette.

These 4" healthy live plants thrive in full sun with excellent drainage — plant in well-drained soil and water moderately until established, after which minimal supplemental irrigation is needed. Hardy in USDA zones 4–8, growing 24–36" tall with a spread of 24–36". Soft lavender-blue flower spikes bloom late spring through midsummer (May–July); shear by one-half immediately after peak bloom to encourage a vigorous, compact second flush of flowers in late summer and maintain an attractive, tidy mound form.