Saunf (Fennel)
Foeniculum vulgare
A long-duration rabi seed spice grown across Gujarat, Rajasthan and Uttar Pradesh, sown a full month earlier than coriander or cumin because it needs so much longer in the ground — and the one job new growers get wrong is cutting the whole crop at once, when fennel's umbels ripen in stages and want picking two or three times, ten to twelve days apart.
Quick Summary
The key points from this page in about two minutes — read it or have it read aloud.
Quick Summary
Saunf (fennel) is a cool-season rabi spice grown across Gujarat, Rajasthan and Uttar Pradesh for its aromatic seed, sown in September–October and needing five to eight months in the field — much longer than its umbelliferous cousins coriander and cumin. The crop can be sown directly or raised as nursery seedlings and transplanted, and either way its defining trait is that the umbels on one plant do not all ripen together.
Because of that uneven ripening, fennel is not a one-day harvest. Growers pick the ripest umbels — seed fully formed but still greenish-yellow, at its highest oil content — and come back two or three times over the following weeks for the rest, rather than cutting the whole plant at once and losing the umbels that were not ready. Get this step wrong and both yield and the volatile-oil content that sets fennel's price take a hit.
Through its long season, fennel wants steady but not excessive moisture, with irrigation timed to branching, flowering and seed-filling, and stays vulnerable to Ramularia leaf blight and powdery mildew in cloudy, humid weather, plus the same aphid that troubles coriander and cumin. The page below carries the exact seed rate, the direct-sow-versus-transplant choice, fertiliser split, irrigation schedule, the full list of blight-tolerant varieties, and expected yields.
- Crop type
- Spice (seed)
- Season
- Rabi
- Suitable states
- Gujarat, Rajasthan, Uttar Pradesh
- Growing duration
- 150–200+ days
- Water requirement
- Medium; 6–10 irrigations
- Temperature
- 20–25°C, cool & dry
- Soil type
- Well-drained loam
- Difficulty level
- Moderate (long season)
- Expected yield
- 15–22 q/ha
- Key practice
- Pick umbels in stages, not all at once
Overview
Fennel (Foeniculum vulgare), known as saunf, is a long-duration seed spice grown mainly in Gujarat, Rajasthan and Uttar Pradesh, valued for its sweet, aromatic seed used both as a spice and, chewed whole, as a mouth-freshener and digestive.
The crop's defining trait is uneven ripening: unlike coriander or cumin, fennel's umbels do not mature together, so harvest is a staggered process of two or three pickings ten to twelve days apart rather than a single cut. Getting this timing right, picking each umbel while the seed is fully formed but still greenish-yellow, is what protects both yield and the volatile-oil content that sets the crop's price.
Fennel also takes far longer in the ground than its umbelliferous relatives — five to eight months against coriander's three — and can be grown either by direct sowing or by transplanting nursery-raised seedlings. This guide follows the crop with that long season, the direct-sow-versus-transplant choice, and the staggered harvest in mind.
Crop timeline, sowing to harvest
A quick visual map of the season — jump to any section below for the detail behind each stage.
- Day 0
Sowing / transplanting
Direct-sown seed drilled 1–2 cm deep in rows 45–60 cm apart, or 5–6 week old nursery seedlings transplanted at the same spacing.
- Day 7–20
Emergence & establishment
Direct-sown seed germinates in about a week to ten days; transplanted seedlings need careful evening planting and a settling irrigation to avoid stress.
- Day 20–80
Vegetative growth & branching
The plant builds a tall, branching frame over an extended period — this stage alone takes much longer than in coriander or cumin.
- Day 80–130
Flowering
Umbels of small yellow flowers open in succession rather than all together, the first sign of the staggered ripening to come; cloudy, humid weather now brings on blight and mildew.
- Day 130–170
Seed set & fill
Seeds set and fill through the cool weather; because umbels flowered at different times, they will also ripen at different times.
- Day 150–200
Staggered harvest
Pick the ripest umbels — seed formed but still greenish-yellow — and return two or three more times at 10–12 day intervals for the rest, rather than cutting everything at once.
Suitable states
States where this crop is grown at scale, highlighted below. Your local Krishi Vigyan Kendra is still the final word for your specific block.
- Jammu and Kashmir
- Himachal Pradesh
- Punjab
- Uttarakhand
- Haryana
- Delhi
- Uttar Pradesh
- Rajasthan
- Bihar
- Jharkhand
- West Bengal
- Sikkim
- Assam
- Arunachal Pradesh
- Meghalaya
- Nagaland
- Manipur
- Mizoram
- Tripura
- Gujarat
- Madhya Pradesh
- Chhattisgarh
- Maharashtra
- Odisha
- Goa
- Telangana
- Andhra Pradesh
- Karnataka
- Kerala
- Tamil Nadu
- Puducherry
- Ladakh
- Chandigarh
Grown here
Climate requirements
Because fennel spends so long in the field, it passes through more weather risk than a shorter-duration spice. Cloudy or humid spells at any point from flowering onward can trigger blight or mildew, so the crop needs watching right through to the staggered harvest, not just at one critical stage.
Ideal temperature
20–25°C, cool and dry, suits the crop through its long season; a spell of frost or heat stress at flowering or seed fill damages yield
Rainfall
A dry rabi season on scheduled irrigation is ideal; rain or heavy dew at flowering brings on blight and mildew
Humidity
Low humidity is best; a cloudy, humid spell at flowering is the trigger for Ramularia blight and powdery mildew together
Sunlight
Full sun in cool, dry weather through the long branching and flowering period for good seed fill and aroma
Soil requirements
Choose a deep, fertile, well-drained field, since fennel occupies it for five to eight months. Avoid land with a history of waterlogging or wilt, and where powdery mildew or Ramularia blight have shown up before, favour a tolerant variety.
Suitable soil
Well-drained loam and sandy loam; deep, fertile soil suits the crop's long growth period and tall frame better than very light soil
pH range
6.5–8.0
Drainage
Good drainage is important — waterlogging over such a long season brings on root rot and Fusarium wilt
Organic matter
Medium to high; a well-manured field (25 t/ha FYM is a commonly recommended dose) supports the crop's long growth and heavy branching better than residual fertility alone
Land preparation
Same four steps whichever region you are in — only the timing shifts with the sowing window.
- 1
Deep, fine seedbed
Two to three ploughings and planking to a fine, deep tilth suited to a long-season, deep-rooted crop; clear old stubble that can carry disease inoculum.
- 2
Heavy basal farmyard manure
Work in around 25 t/ha of well-rotted farmyard manure ahead of sowing — fennel is a heavier feeder over its long season than coriander or cumin.
- 3
Nursery bed, if transplanting
For transplanted fennel, raise seedlings on a well-prepared, mulched nursery bed (about 2.5–3.0 kg seed per 1,000 m² covers one hectare of field), keeping it watered until 7–8 day germination.
Seed information
How the main varieties compare, so you can pick by duration, yield, disease pressure or what you are growing for.
| Variety | Duration | Yield | Disease resistance | Best state | Suitable for |
|---|---|---|---|---|---|
Released 1973 — an early foundational release that Co-1 was later reselected from; still grown and the historical basis of much of India's fennel breeding. | 160–180 days | Medium | Not specifically bred for disease resistance | Tamil Nadu, wider India | General cultivation, older growing tracts |
Released 1984 by Gujarat Agricultural University — tall, bushy plants with bold, dark green seed, tolerant of sugary disease (ergot) and leaf-spot, and noted for standing up to drought. | ~255 days | ~16.3 q/ha (6.6 q/acre) | Tolerant to sugary disease (ergot) and leaf-spot | Gujarat | Long-season, drought-prone tracts |
Developed by Tamil Nadu Agricultural University, Coimbatore, released 1985, through reselection from PF-35 for southern growing conditions. | 160–180 days | Medium | Moderate | Tamil Nadu | South India |
From Rajasthan, released 2002 — a tall, erect variety with stout stems and long, bold grain, highly resistant to Ramularia blight, the crop's major leaf disease. | 145–160 days | ~16.0 q/ha (6.5 q/acre) | Highly resistant to Ramularia blight | Rajasthan | Blight-prone fields |
From Haryana Agricultural University, Hisar, released 2004 — a selection from indigenous germplasm; spreading, late-maturing, and notably resistant to lodging and seed shattering. | Late-maturing (long) | ~17.0 q/ha (1,700 kg/ha) | Not specifically documented; valued instead for lodging and shattering resistance | Haryana | Lodging-prone, windy fields |
Released 2018 by ICAR-NRCSS, Ajmer, after multi-location trials across 27 sites — semi-erect and compact, moderately resistant to Ramularia blight, with reduced aphid susceptibility and high (1.9%) essential-oil content. | Medium | 17.9 q/ha | Moderately resistant to Ramularia blight; less prone to aphids | Rajasthan, Gujarat, Madhya Pradesh, Uttar Pradesh, Punjab | Wide adaptability, compact plant type |
The newest release, also from ICAR-NRCSS, Ajmer, selected over three seasons of trials for higher yield and genuine Ramularia blight resistance — currently the highest-yielding named variety on this list. | Medium | ~21.4 q/ha (2,143 kg/ha) | Resistant to Ramularia blight | Rajasthan and wider fennel belt | High-yield, blight-prone fields |
- Seed rate
- 10–12 kg/ha for direct sowing; about 2.5–3.0 kg seed for a nursery to raise transplants for one hectare
- Certified seed
- On a field with a Ramularia blight history, RF-101 or AF-3 offer the strongest resistance; AF-2 is the more moderate, broadly adapted option. Fresh, certified seed is worth the cost given how long the crop occupies the field.
- Spacing
- Direct-sown: 45–60 cm between rows. Transplanted: 45–60 cm rows with 20 cm between plants, or 60 × 30 cm.
- Seed treatment
- Treat seed with Carbendazim or Thiram (2 g/kg) before sowing to protect against seed-borne wilt and damping-off, especially important for nursery-raised seedlings.
Sowing guide
Fennel's sowing calendar runs earlier than its umbelliferous relatives precisely because the crop needs five to eight months, not three, to finish. Transplanting is common where growers want an even earlier start or better field-stand control, at the cost of the extra nursery labour.
- Best time
- Mid-September to mid-October for direct sowing — a full month earlier than coriander or cumin, since fennel needs so much longer to mature. Where nursery-transplanted, raise seedlings from July and transplant in August for an early-season crop.
- Row spacing
- 45–60 cm
- Plant spacing
- 20 cm within the row (transplanted); direct-sown crops are thinned to a similar spacing
- Sowing depth
- 1–2 cm
- Method
- Drill treated seed shallow into a moist, fine, deep seedbed; or transplant 5–6 week old nursery seedlings in the cool of the evening to avoid transplant shock on a hot day
Fertilizer schedule
A split dose beats one large dose applied at sowing — nitrogen especially is lost to the air and to leaching if it all goes in on day one.
- 1
Basal (at sowing/transplanting)
Day 0
Part of the nitrogen with full phosphorus, on top of the 25 t/ha farmyard manure already worked in — roughly 30 kg N and 45 kg P₂O₅ per hectare as a starting basal split.
- 2
First top-dressing
~30 days after sowing
A further split of nitrogen (about 30 kg N/ha) during active vegetative growth, with an irrigation.
- 3
Second top-dressing
~60 days after sowing
The remaining nitrogen (about 30 kg N/ha) — the total programme runs to roughly 90 kg N and 45 kg P₂O₅ per hectare across the season.
Irrigation schedule
1. Establishment
Day 0–20
A settling irrigation at sowing or transplanting, then light irrigations every 15–20 days while the crop is young.
2. Branching, flowering & seed fill
80–170 days
The three critical irrigation stages — branching, flowering and seed-filling — where water timing has the biggest effect on final yield.
3. Late season (March–April)
As the crop finishes
Interval tightens to 12–15 days as temperatures rise, typically totalling 6–10 irrigations for the whole season depending on soil and weather.
Critical stages
- Branching
- Flowering
- Seed filling
Water-saving tips
- Fennel needs more water over its season than coriander or cumin simply because it is in the field for so much longer, but each individual irrigation should still be light, not heavy.
- Time irrigation around branching, flowering and seed-fill for the biggest yield effect per litre applied.
- Good drainage matters as much as irrigation timing — standing water over such a long season is a bigger risk than in a short-duration crop.
Weed management
Common weeds
Organic control
- Two to three hand weedings spread across the extended vegetative period, since fennel takes much longer to close its canopy than a short-duration spice.
- Keeping the crop weed-free longer than usual matters here simply because the growing period itself is longer.
Chemical control
- A pre-emergence herbicide such as Pendimethalin, applied on moist soil after sowing, controls early weeds through the crop's slow, extended establishment.
- One or two hand weedings during the long vegetative period back up the pre-emergence spray, since the crop takes far longer than most to canopy over and shade weeds out.
Nutrient deficiency identification
What a shortage of each nutrient actually looks like on the plant, so you can tell a deficiency apart from a disease before you spray the wrong thing.
Nitrogen
Visible symptom
Pale, small older leaves and a thin, weak plant with poor branching over the long season.
Phosphorus
Visible symptom
Stunted plants with dull, dark leaves and delayed flowering.
Zinc
Visible symptom
Small, pale, interveinally chlorotic new leaves and stunted growth on light or calcareous soils.
Boron
Visible symptom
Poor seed set and hollow, cracked stems, especially in a deficient soil under the crop's long flowering period.
Diseases to watch for
Symptoms, likely cause and what actually treats it — not just a spray name.
Ramularia blight
- Symptoms
- Small angular brown spots on older, lower leaves first, enlarging and covered with greyish-white growth; in a severe attack the spots merge into linear patches on stems and umbels and the whole plant browns and dries.
- Cause
- Ramularia foeniculi, favoured by cloudy, humid weather, worsening as the long season gives the fungus more time to build up.
- Treatment
- Spray Mancozeb (Dithane M-45) at 0.25% concentration at first appearance, repeated through the risk period.
- Prevention
- Grow a resistant variety (RF-101 or AF-3 offer the strongest resistance, AF-2 moderate), use treated seed, rotate crops, and avoid dense, poorly-ventilated stands.
Powdery mildew
- Symptoms
- A white powdery coating on leaves and stems, worst in cloudy, humid weather, weakening the plant over its long season and shrivelling the seed.
- Cause
- Leveillula taurica, favoured by warm days and cool, humid nights.
- Treatment
- Spray wettable sulphur or a systemic fungicide at first sign.
- Prevention
- Sow on time, avoid dense stands, and grow a tolerant line where the field has a history of the disease.
Fusarium wilt
- Symptoms
- Yellowing, wilting and death of plants in patches, at any point in the long season; roots and stem base rot.
- Cause
- Fusarium oxysporum f. sp. funiculi, soil-borne and worse on wet, poorly-drained soil.
- Treatment
- No effective in-crop cure; remove affected plants.
- Prevention
- Use treated seed, ensure good drainage, and rotate away from fennel on a field with a wilt history.
Damping off
- Symptoms
- Seedlings collapse and die at or just below soil level, most damaging in the nursery bed.
- Cause
- Pythium aphanidermatum, favoured by overwatering a dense nursery bed.
- Treatment
- Drench affected nursery beds with a recommended fungicide and reduce watering.
- Prevention
- Treat seed before sowing, avoid over-watering the nursery, and do not sow too densely.
Pests to watch for
What to look for before the damage is visible, and organic options before you reach for a chemical.
Aphids
- Identification
- Small green or grey soft-bodied insects clustering on tender shoots, flowering umbels and developing seed — the same coriander aphid that troubles cumin and coriander.
- Damage
- Heavy colonies at flowering and seed-fill suck sap, cut seed set, and foul the crop with honeydew that invites sooty mould, cutting both yield and grade.
- Organic control
- Neem oil sprays and conserving natural predators like ladybird beetles by avoiding early broad-spectrum insecticide use.
- Chemical control
- A recommended insecticide such as Imidacloprid once colonies cross a damaging threshold, timed to spare pollinators during the crop's long flowering period.
Thrips
- Identification
- Tiny, slender insects in the flowers, causing silvering of petals and poor seed set.
- Damage
- Reduced seed set and blemished seed under heavy attack, worse given how long fennel stays in flower.
- Organic control
- Blue sticky traps and neem sprays; keep field borders clean of alternate host weeds.
- Chemical control
- A recommended insecticide if thrips numbers are high, ideally combined with the aphid spray round.
Common mistakes to avoid
The mistakes that cost growers the most, ranked by how often they show up in the field — not in the order you might expect.
- 1
Cutting the whole crop at once, like coriander or cumin.
Why it hurts
Fennel's umbels ripen in stages, not together — cutting everything at once catches some umbels too early and loses value on the seed and oil content of others that were not yet ready.
- 2
Sowing on a coriander or cumin calendar (October–November).
Why it hurts
Fennel needs five to eight months, not three — sowing too late leaves the crop still filling seed when hot weather arrives, cutting both yield and quality.
- 3
Under-manuring the field for such a long-season crop.
Why it hurts
Fennel is a heavier feeder over its extended growth period than coriander or cumin — skimping on the basal farmyard manure and fertiliser dose shows up as weak, poorly-branched plants.
- 4
Over-watering a nursery bed.
Why it hurts
Damping off (Pythium) kills seedlings at the base in an over-wet, dense nursery — water carefully and do not sow the nursery bed too thickly.
- 5
Ignoring cloudy or humid weather anywhere from flowering onward.
Why it hurts
Because the crop stays in this risk window for so long, Ramularia blight and powdery mildew get more chances to take hold than in a short-duration spice — watch the crop right through to harvest, not just at one stage.
- 6
Growing a susceptible variety on a field with a Ramularia blight history.
Why it hurts
Blight can brown and dry the whole plant in a severe attack — RF-101 and AF-3 carry the strongest resistance and are the safer choice on such a field.
- 7
Sun-drying picked umbels for too long.
Why it hurts
More than a day or two of direct sun changes seed colour and lustre and cuts quality — dry briefly in sun, then finish in shade for 8–10 days.
- 8
Growing fennel after fennel repeatedly on the same field.
Why it hurts
Wilt and blight inoculum build up in the soil over successive long-duration crops — rotate to an unrelated crop between fennel plantings.
Harvesting
Fennel is not a one-day harvest. Pick each umbel once its seed is fully formed but still greenish-yellow — the stage of highest volatile-oil content — and return two or three more times at roughly 10–12 day intervals for the umbels that were not yet ready, typically starting from around 150 days and running to 200 or more depending on variety.
Signs it is ready
- Seed fully formed, greenish-yellow, not yet fully dry
- Ripe umbels picked while others on the same plant are still maturing
- Total harvest spread across two to three rounds
Tools
- Hand-picking or secateurs for individual ripe umbels
- Tarpaulin for the short initial sun-drying
- Shade for the 8–10 day final drying that preserves colour
Expected yield
Roughly 15–17 q/ha for older, local-type varieties; up to about 18–22 q/ha for high-yielding releases like AF-2 and AF-3 under good management
Post-harvest & storage
Storage
Dry picked umbels briefly in the sun (1–2 days), then finish drying in shade for 8–10 days — longer direct-sun exposure dulls seed colour and lustre and costs quality. Store well-dried seed in a cool, dry, airy godown.
Packaging
Pack clean, well-dried seed in clean bags kept off the floor, away from moisture, for a spice whose value depends heavily on colour and aroma staying intact.
Transportation
Move dry seed protected from moisture and direct sun, both of which fade colour and aroma over time.
Shelf life
Many months to about a year for correctly dried and stored seed, with gradual quality loss over time — selling within a season protects the price.
Market prices
Today's mandi price near you, pulled live from the government's own Agmarknet data.
Live daily mandi prices from the government Agmarknet dataset.
Synced from data.gov.in (Agmarknet). Rates are ₹ per quintal.
Weather
Current conditions and a 5-day outlook for your selected location, with one line of stage-aware advice.
Pick your state for current conditions and a 5-day outlook.
Live data from Open-Meteo
Profit calculator
Your own cost sheet, expected yield and selling price — not ours.
Where the money goes
Share of the total cost per acre, using the calculator’s own default cost sheet below — adjust the numbers there to match your field and this picture will no longer apply to you exactly, but the ranking rarely changes.
- Land rent34% (₹10,000)
- Labour30% (₹9,000)
- Fertiliser9% (₹2,800)
- Irrigation9% (₹2,800)
- Pesticide & weedicide6% (₹1,800)
- Machinery5% (₹1,500)
- Seed3% (₹1,000)
- Interest3% (₹900)
Official downloads
Government and ICAR documents only — everything below is hosted on an official server.
Frequently asked questions
Why does fennel take so much longer to grow than coriander or cumin?
Fennel simply has a longer biological cycle — five to eight months from sowing to the last harvest round, against roughly three months for coriander or cumin. That is why its sowing window (mid-September to mid-October) opens a full month earlier than theirs, so the crop still finishes before summer heat sets in.
Why can't I just cut the whole fennel crop at once?
Fennel's umbels do not all ripen together, even on the same plant. Cutting everything in one pass catches some umbels too early, losing yield and volatile-oil content, and lets others over-ripen. The standard practice is to pick the ripest umbels — seed fully formed but still greenish-yellow — and return two or three more times at 10–12 day intervals for the rest.
Should I direct-sow fennel or raise it in a nursery and transplant?
Both are used in India. Direct sowing in mid-September to mid-October is simpler and more common. Nursery-raising (sown from around July, transplanted about 5–6 weeks later in August) suits growers wanting an earlier start or tighter control over the field stand, at the cost of extra nursery labour and the risk of damping-off if the nursery bed is over-watered.
What is Ramularia blight and how do I protect against it?
Ramularia blight, caused by the fungus Ramularia foeniculi, is fennel's major disease — small brown spots on lower leaves that can spread to brown and dry the whole plant in a severe attack, worsened by cloudy, humid weather over the crop's long season. RF-101 and the newer AF-3 carry the strongest resistance; spray Mancozeb (0.25%) at first appearance and repeat through the risk period on a susceptible variety.
Does fennel have an MSP?
No. Fennel (saunf) has no Minimum Support Price — it is a market seed-spice crop, though an actively traded one, with Unjha in Gujarat serving as a major fennel market alongside cumin, coriander and fenugreek. Use the live mandi prices and the profit calculator on this page to plan the crop and time your sale.
Still have questions?
The FAQs above cover the common ones. For anything specific to your field and soil, your nearest Krishi Vigyan Kendra is the authoritative answer.