Persicaria runcinata ‘Purple Fantasy’

Common Name : knotweed 'Purple Fantasy'Family : PolygonaceaeType : Herbaceous PerennialHabit : SuckeringSpread : 10-50 cmFlower colour : White& PinkFlowering from : Juneto SeptemberFoliage : Semi-evergreenFoliage colour : Siver-green& PurpleHardiness : H6
Hardy in all of UK and northern Europe -20° to -15°
Sunlight : Full Sun / Part ShadeMoisture : Moist but well-drainedSoil : Acid / Neutral / AlkalineSeason of interest : Summer - Autumn

‘Purple Fantasy’ is a perennial plant with low mounds of upright stems, creeping vigorously from stout rhizomes. Triangular leaves emerge maroon-purple in spring, turning green and developing purple markings, with leaf undersides tinged pink; these are held on short winged stalks. Tiny pink or white flowers in 1cm pompoms bloom in profusion and are borne on stem tips of slender stems to 60cm high from midsummer to autumn.

See How to grow Persicaria runcinata ‘Purple Fantasy’ on Jack Wallington’s blog.


2019.-Totally gone in winter. Begins to emerge, very extensive, at the beginning of March. In great condition early April, but damaged by the frost of April 12. First flowers early May. Some ends damaged by the cold weather again early May.

2018.- Purchased 3 plants at the nursery ‘Les jardins d’en face’ – Pleurtuit at their open door in May. Planted in south-western border. Does not like the full sun too much. Spreads nicely in June-July. Foliage tired in September (heat?).

See on garden plan - Coordinates: B19