Common name: Purple loosestrife. Créachtach.
Perennial. Beautiful tall flower spikes, with a multitude of purple flowers, up to 1.5m tall. Once established will give years of flowering.
Not only astounding to look at but the many flowers provide for insects in mid to late summer.
This will be happiest beside your wild life pond or stream. Prefers full sun.
Sow late autumn or early spring into a seed tray, prick out when large enough to handle and plant out when big enough. Dies back over winter to re-emerge from May to flower in July.
Not so much a wound herb as the Irish name suggests but used to cure diarrhoea and dysentry in past times.