A carmine carpet for the rock garden.
At a glance
- Height: 10–15 cm
- Flower colour: carmine red
- Flowering: June – August
- Position: sunny
- Sowing: April – May (in trays / plug trays)
- Planting out: July – August
- Difficulty: easy – a plant for beginners
- Number of seeds per packet: approx. 900 (0.30 g)
What makes this variety stand out
Dianthus deltoides differs from sweet william in its habit and longevity: it is a true perennial that spreads year after year into an increasingly wide, flat carpet of small, dark green leaves. The flowers are only 1.5–2 cm in diameter, but they appear in such abundance that at the height of flowering the cushion is almost entirely red. This variety has a carmine colour, deeper and warmer than the pink forms of the species.
The plant is fully frost-hardy, tolerates drought, poor and stony soil, and even light foot traffic. After the main flowering period, if it is trimmed back, it often flowers again in late summer.
Step-by-step cultivation
Sowing (April – May, under cover): sow the small seeds in trays or plug trays, covering them only lightly with compost or sand. At a temperature of 15–18°C, seedlings emerge after 7–14 days. You can also sow directly outdoors in May–June, in a well-prepared, weed-free bed.
Pricking out: when the seedlings develop their first pair of true leaves, prick them out into pots or a nursery bed at approximately 8 × 8 cm spacing. They grow slowly – do not worry if little seems to happen during the first few weeks.
Planting out (July – August): plant the young plants in their permanent position at 20 × 25 cm spacing, in well-drained, rather poor soil – sandy or gravelly, with added lime. In heavy soil, add coarse sand or fine gravel. The first flowers will appear the following year.
Care: virtually none: no fertiliser is needed, and water only during prolonged drought. After flowering, it is worth shortening the stems by 1/3 – the plants become denser and often flower again. Every 4–5 years, the clumps can be divided and rejuvenated.
Uses
A classic for rock gardens and dry-stone walls, for planting bed edges, gaps between paving slabs and slopes, and as a ground cover plant in sunny, dry places where grass will not grow. It also grows well in pots, bowls and green roofs. The flowers provide valuable forage for butterflies and wild bees; the dotted pink is partially protected in Poland in its natural habitats, so sowing it in the garden is the best way to enjoy it at home.
Gardener’s tip
The dotted pink does not die from cold, but from excess moisture. If you want to grow it in a pot or in a bed with ordinary soil, mix the growing medium with one third gravel or coarse sand and never mulch it with bark – use gravel instead, which drains water away from the root collar.
Specifications
| Latin name | Dianthus deltoides |
| Flower colour | carmine red |
| Height | 10–15 cm |
| Position | sunny |
| Seasonality | perennial |
| Sowing period under cover | April – May |
| Direct sowing period | May – June |
| Planting-out period | July – August |
| Flowering period | June – August |
| Spacing | 20 × 25 cm |
| Net weight | 0.30 g (~900 seeds) |
| Series | Traditional |
| Producer | W. Legutko |
| EAN code | 5903837123001 |