Dianthus caryophyllus ‘Grenadin King of the Blacks’ have the darkest of purple-red coloured flowers, blooming from late spring through midsummer & will provide a continuous harvest of blooms for cutting. Hardy, tough and very easy to grow, they can be grown in a sunny aspect in rich, well-drained soil.
Dianthus caryophyllus ‘Grenadin King of the Blacks’ Seeds can be sown at any time but are best sown in winter or early spring. Cover seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks put the damp seed tray in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.
It requires full sun in neutral to alkaline soil that drains well. Dianthus do not tolerate wet soil well, particularly in winter so don’t plant them in a low spot where water collects and keep mulch away from the plants.