, tussock-forming grass valued for its upright habit and narrow, purple flowering panicles. The blooms appear in the UK between July and September. It originates from the Molinia genus within the grass family Poaceae and suits moist, acidic ground. Plants form neat clumps that give vertical structure through summer and into autumn.

Molinia caerulea 'Karl Foerster' belongs to the Molinia genus in the grass family Poaceae and originates from regions where moorland and wet heaths occur. In cultivation it behaves as a herbaceous, tussock-forming perennial, producing narrow purple panicles in the UK from July to September that add late-summer height and texture. Site choice should favour open, preferably sunny positions with reliably moist, acidic soils; the species is well adapted to peaty or humus-rich ground and tolerates exposure typical of upland and moorland settings. Avoid very dry, alkaline soils if you want the clumps to remain vigorous. Plants establish as distinct clumps, so allow space for their upright form when planting in groups or drifts. Use 'Karl Foerster' to create vertical lines in mixed herbaceous borders, alongside bog gardens and pond margins, or in naturalistic schemes where seasonal structure matters. The purple panicles make effective late-summer colour and, when planted in small groups, the upright tussocks read clearly against lower perennials and evergreen backdrops. Positioning a few clumps where their seedheads can catch the light will extend their interest beyond the main flowering months.

Molinia caerulea 'Karl Foerster' is a perennial, tussock-forming grass valued for its upright habit and narrow, purple flowering panicles. The blooms appear in the UK between July and September. It originates from the Molinia genus within the grass family Poaceae and suits moist, acidic ground. Plants form neat clumps that give vertical structure through summer and into autumn.

Molinia caerulea 'Karl Foerster' (Purple Moor-grass) produces narrow purple panicles July to September and forms upright tussocks for moist, acidic soils.

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