Carnation (Dianthus caryophyllus) is one of the world's most popular cut flowers, valued for its ruffled, clove-scented blooms and excellent vase life. Though a short-lived perennial in its Mediterranean homeland, it is mostly grown as a cool-season annual across India, planted after the monsoon for winter and spring flowering.
In India it thrives in the hills of Himachal Pradesh, Uttarakhand and the Nilgiris, and is widely cultivated under polyhouse conditions in Maharashtra, Karnataka and Tamil Nadu for the commercial bouquet trade. Compact spray and dwarf types also make rewarding container and balcony plants in the plains during the cooler months.
Flowers come in a wide colour range, often with fringed or picotee edges, and last well over a week once cut, making carnation a mainstay of gifting bouquets, weddings and floral decor.
Specifications
| Family |
Caryophyllaceae |
| Native region |
Mediterranean region |
| Mature height |
30-80 cm |
| Mature spread |
20-30 cm |
| Growth rate |
Moderate |
| Foliage |
Slender, grey-green, grass-like leaves on jointed stems |
| Flower colour |
Pink, red, white, yellow, purple and bicolour (often fringed) |
| Flower season |
Winter to spring (Dec-Apr in the plains) |
| Climate zone |
Cool to temperate; cool-season annual in subtropical India |
Care guide
| Sunlight |
Full sun to bright light; at least 5-6 hours of direct sun for strong stems and flowering. |
| Watering |
Keep soil evenly moist but never waterlogged; water at the base and let the top layer dry slightly between waterings. |
| Soil / mix |
Light, well-drained, fertile loam enriched with compost; slightly alkaline pH 6.5-7.5 is ideal. |
| Temperature |
Prefers 10-22 C; growth and flowering suffer above 30 C, so it is grown in the cool season or hills. |
| Humidity |
Moderate; good air circulation needed as high humidity encourages fungal disease. |
| Fertilizer |
Feed every 2-3 weeks during growth with a balanced or bloom (high-potash) fertiliser; avoid excess nitrogen. |
| Pruning |
Pinch young shoots to encourage branching; for large blooms, disbud side buds. Deadhead spent flowers regularly. |
| Repotting |
If grown in pots, repot or refresh soil at the start of each cool season; use a 20-25 cm pot with good drainage. |
| Propagation |
From seed sown in autumn, or from stem cuttings of non-flowering shoots; named cultivars are grown from cuttings. |
| Pests & problems |
Aphids, thrips, red spider mites and caterpillars; fungal rust, fusarium wilt and botrytis in damp conditions. |
| Toxicity / safety |
Mildly toxic to cats and dogs; can cause mild stomach upset and skin irritation. Generally low risk to humans. |
| Difficulty |
Moderate |
Uses
<p>Carnation is mainly grown for its long-lasting, fragrant cut flowers used in:</p><ul><li>Bouquets and gift arrangements</li><li>Wedding decor, garlands and stage decoration</li><li>Balcony, terrace and container gardening in the cool season</li><li>Garden borders and beds in hill stations</li></ul>
Growing tips
<p>In the Indian plains, sow or plant carnations from September-October so plants flower through the cool winter and spring months; avoid the hot, humid summer.</p><p>Choose a spot with morning sun and good airflow. Stake taller stems to keep them upright, pinch growing tips early for bushier plants, and feed with a high-potash fertiliser as buds form. In hill stations they can be grown for a longer season.</p>
