Description
I have become increasingly fond of persicarias. I suppose it is not so much that I like them as admire them – for being generally good-natured, easy, reliable, long-flowering and attractive. As a group they generally prefer moist soil, can deal with our heavy, clay soil and do not suffer from any major pests and diseases. They are good for cutting too and their leaves are dull and weed-suppressing at worst and attractive at best.With spikes of intense blood-red flowers that open over a long period from even darker buds, Persicaria amp. Blackfield not only looks great, but it will help attract beneficial insects including bees. Even when not in bloom, the relatively large (to 10cm in length) oval to heart shaped foliage offers interest.
Position: Sun or part shade
Soil: Deep retentive is best
Rate of growth: moderate
Flowering period: Mid – late summer
Hardiness: Hardy
Pot size; 2L
Eventual height & spread : 1m x 60cm