Carnation Farming in India 2026
A long stemmed polyhouse cut flower with excellent vase life, grown in standard and spray types for bouquets.
Overview
Carnation (Dianthus caryophyllus) is among the most important cut flowers grown under protected cultivation in India, prized for its long, strong stems, wide colour range and exceptionally long vase life. It is grown in two main forms: standard or single type, which carries one large bloom per stem, and spray type, which carries several smaller blooms per stem. Because carnation needs cool nights and steady conditions, it is almost always grown in naturally ventilated or climate controlled polyhouses, with major production around Pune in Maharashtra and parts of Karnataka, Tamil Nadu and the hills. A crop usually flowers for about two years from a single planting. Carnation demands disciplined fertigation, regular pinching, netting to keep stems straight, and tight disease control, so it suits growers ready to invest in a structure and intensive management. Returns can be attractive but depend heavily on quality, season and market price, so all figures should be treated as indicative ranges and verified locally before investing.
Climate
Carnation prefers cool, mild conditions with day temperatures around 18 to 25 degrees Celsius and night temperatures around 10 to 15 degrees Celsius, with bright light and low humidity. High temperatures cause weak stems, split calyx and poor colour, while excess humidity invites disease. A polyhouse is used to hold these conditions in the plains, and cool hill climates suit it naturally.
Soil
Carnation needs a light, well drained, porous and well aerated root medium because it is very sensitive to waterlogging and root rot. Beds are prepared from a mix of soil, well rotted farmyard manure, cocopeat, sand and rice husk, with a slightly acidic to neutral pH of about 6.0 to 6.5. Beds are usually sterilised by solarisation or chemical treatment before planting to reduce soil borne wilt.
Planting & Spacing
Disease free, tissue culture or rooted cutting plantlets are planted on raised beds, commonly at about 15 by 15 centimetres or 20 by 20 centimetres spacing, giving roughly 25 to 30 plants per square metre. Plant shallow so the crown sits at the surface to avoid stem rot, and lay support netting in layers as the crop grows to keep stems straight. Drip irrigation and fertigation are standard.
Varieties
Carnations are grouped into standard or single types with one large bloom per stem and spray types with several blooms per stem, in a wide colour range of reds, pinks, whites, yellows, purples and bicolours. Most commercial varieties in India are imported hybrids selected for stem strength, colour and yield. Choose proven, locally tested varieties from a reliable nursery to match the demand of your target market.
Care & Management
Carnation needs regular balanced fertigation including calcium to prevent stem weakness and calyx splitting. The plants are pinched once or twice early on to encourage more flowering stems, and disbudding is done on standard types to leave one bloom per stem while spray types are left with side buds. Support nets are raised as the crop grows, old and diseased leaves are removed, and humidity and ventilation are managed to limit fungal disease.
Pests & Diseases
Common pests are thrips, aphids, red spider mite, two spotted mite and caterpillars, while major diseases include Fusarium wilt, bacterial wilt, rust, Alternaria leaf spot and Botrytis on flowers. Soil borne wilts are the most damaging, so bed sterilisation, good drainage, a dry crown and clean planting material are essential. Use sticky traps for monitoring and follow local integrated pest management advice, rotating any plant protection products and following label and safety guidance.
Yield & Harvest
Flowering usually starts about four to five months after planting and continues for around two years. Standard carnations are cut when the outer petals are nearly perpendicular to the stem and spray types when one or two flowers have opened, cutting the stem in the cooler hours and putting it straight into water. A well managed crop can yield roughly 200 to 300 flowers per square metre per year, though actual yield varies with variety, type, climate and management. Stems are graded by length and packed in bunches.
Cost & Profit
Carnation needs a protected structure, so the main investment is the polyhouse plus planting material and drip fertigation, and it demands high initial investment. A naturally ventilated polyhouse costs a substantial amount per 1000 square metres depending on design, location and material, with tissue culture or rooted plants adding to the first year cost. Because the crop yields for about two years, returns spread over multiple years and published benefit cost ratios for carnation under polyhouse are often favourable when quality and market are good. These figures vary widely with market price, season and management, so treat them as a planning guide and prepare a project report with current local quotations before investing.
These are indicative ranges. Actual cost and income vary by region, market and management, so verify locally.
Market & Demand
Carnation is sold through wholesale flower markets, florists, event and wedding decorators and online flower platforms, with major markets in Pune, Bengaluru, Mumbai and other metros. Demand is strong for weddings, events and gifting, and red and pink shades sell especially well around festivals. Long, straight stems with strong colour fetch the best prices, so growers often tie up directly with florists, decorators or auction centres for steadier rates.
Subsidy & Support
Protected cultivation of flowers like carnation is supported under the Mission for Integrated Development of Horticulture, which gives assistance for polyhouses, shade nets and planting material, usually as a percentage subsidy with limits per area. The National Horticulture Board and state horticulture departments also run schemes for commercial floriculture. Subsidy rates, ceilings and eligibility change over time and differ by state and category, so check the current MIDH guidelines and apply through your district horticulture office.
Where to grow it in India
Frequently asked questions
What is the difference between standard and spray carnation?
Can carnation be grown in open field in the plains?
Why is pinching done in carnation?
How long does a carnation crop keep producing?
What causes calyx splitting in carnation?
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