Complete Farming Guide
Tea Farming Guide
Camellia sinensis
6.8 million tonnes produced globally — the world's most consumed beverage after water
Tea is grown in over 50 countries across the tropical and subtropical belt, with China, India, Kenya, and Sri Lanka dominating production. The tea plant is a perennial evergreen shrub that can live for over 100 years and is commercially harvested for 30-50 years. All types of tea (black, green, oolong, white) come from the same species — the processing method determines the type. Tea estates employ some of the largest agricultural workforces in the world, with plucking still done primarily by hand to ensure quality.
Quick Facts
Growing Season
Perennial — harvested year-round in tropics, seasonal in temperate areas
Growth Period
3-5 years to first commercial harvest, then continuous
Optimal Temp
18-30 degrees C (65-86 degrees F)
Water Needs
1200-2500mm annually, well-distributed
Top Producer
China
Yield / Acre
600-1,200 kg made tea/acre/year (well-managed)
Tea Growth Stages — What to Do at Every Stage
Nursery & Planting
Months 0-12 (nursery) + TransplantingWhat to do
Propagate from leaf cuttings (vegetative) or seed. Place single-node cuttings in sand beds under 50% shade. Transplant rooted cuttings at 12-18 months. Field spacing: 3-4 ft between plants, 4-5 ft between rows (3,500-5,000 plants/acre). Plant at the start of the main rainy season.
Watch for
Nursery diseases: blister blight on young leaves, root rot from overwatering. Transplant mortality from drought stress in the first dry season. Mulch heavily (10cm) around young plants.
Young Tea (Years 1-3)
Years 1-3 after field plantingWhat to do
Shape the bush framework through "tipping" — remove the apical bud at 18-24 inches to encourage lateral branching. Apply NPK at 50% of mature bush rates. Maintain ground cover or mulch to control weeds and conserve moisture. No commercial plucking in years 1-2.
Watch for
Helopeltis tea mosquito bug damage on young shoots. Red spider mite in dry periods. Weed competition — keep 60cm weed-free radius around each bush.
Mature Bearing Tea
Year 3+ (continuous production)What to do
Pluck every 7-14 days during the growing season — take only the bud and top 2 leaves ("two leaves and a bud"). Apply 150-200 kg N/acre/year in 4-6 split doses. Prune to "plucking table" height (60-90cm) every 3-5 years to rejuvenate the bush.
Watch for
Over-plucking (taking too many leaves) weakens the bush. Under-plucking allows leaves to mature past prime quality. Monitor for blister blight, grey blight, and mite damage which all reduce made-tea quality.
Pruning & Recovery
6-12 weeks after pruningWhat to do
Prune every 3-5 years, removing 12-18 inches to bring the plucking table back to 50-60cm. Apply heavy mulch (15cm) and increase fertilizer by 25% in the pruning year. Tipping of new shoots at the desired plucking table height resumes at 8-10 weeks.
Watch for
Shot-hole borer attack on freshly pruned wood. Dieback of cut branches from Botryodiplodia. Ensure clean, sharp cuts angled away from the center of the bush.
Common Tea Diseases — Identification Guide
Blister Blight
Exobasidium vexans
What you will see
Small, translucent spots on young leaves that enlarge into raised, convex blisters on the upper surface. Blisters are pale green to white, becoming velvety on the underside with fungal spores. Infected leaves are deformed, brittle, and produce poor-quality made tea.
Conditions that favor it
Cool temperatures (15-20 degrees C), high humidity, and misty or foggy conditions common at high altitude. Most severe during the southwest monsoon in India and Kenya highlands. Only affects actively growing young shoots.
Grey Blight
Pestalotiopsis theae
What you will see
Large, irregular grey-brown patches on mature leaves, starting from the leaf margin or tip. Concentric rings visible within the lesion. Tiny black fruiting bodies (acervuli) are scattered across the grey area. Causes premature leaf fall.
Conditions that favor it
Warm, humid conditions (25-30 degrees C). More severe on stressed, weakened, or old bushes. Often follows mechanical damage from plucking or hail. Poor drainage worsens severity.
Root Disease (Brown Root Rot)
Fomes noxius
What you will see
Progressive yellowing, poor flush production, and eventual death of the bush. Reddish-brown mycelial crust covers the root surface. Soil around the root collar smells musty. Adjacent bushes die in expanding patches.
Conditions that favor it
Waterlogged soils, poorly drained areas, and land cleared from forest with remaining tree roots. Spreads through root contact between adjacent bushes. Can persist in dead roots for years.
Red Rust (Algal Leaf Spot)
Cephaleuros virescens
What you will see
Raised, velvety, orange-red circular spots on the upper surface of mature leaves and on stems. Not actually a fungus but a parasitic alga. Weakens branches and reduces photosynthetic area. Stems may become girdled.
Conditions that favor it
Stagnant, humid air with poor bush spacing. More common on neglected, shaded, and poorly pruned bushes. Does not affect young, actively growing shoots.
Common Tea Pests — Identification & Damage
Tea Mosquito Bug (Helopeltis spp.)
Damage
Adults and nymphs feed by piercing young shoots and leaves, injecting toxic saliva that causes dark brown, necrotic spots surrounded by a lighter halo. Severely damaged shoots wither and die. Continuous feeding creates a "scorched" appearance across the plucking table.
How to identify
Slender, orange-red bugs (6-8mm) with a distinctive long, knobbed antenna. Most active in early morning and late evening. Feeding marks are angular, dark brown patches on young leaves. Threshold: more than 10% of pluckable shoots showing damage.
Red Spider Mite (Oligonychus coffeae)
Damage
Mites suck sap from the upper surface of mature leaves, causing them to turn bronze or reddish-brown. Severely infested leaves become brittle and fall. Reduces photosynthetic area and weakens the bush, lowering flush production for months.
How to identify
Tiny (0.3mm), dark red mites on the upper leaf surface. Fine webbing may be visible. Use a hand lens — look for moving red dots. Leaves appear bronzed. Shake a leaf over white paper to see dislodged mites. Most severe during dry weather.
Shot-Hole Borer (Euwallacea fornicatus)
Damage
Beetles bore into woody stems and branches, creating tunnels for fungal gardens they feed on. Infested branches show dieback, yellowing, and reduced flush production. Can kill branches or entire bushes over time.
How to identify
Tiny (1.5-2mm), dark brown beetles. Look for small, round entry holes on stems and branches, often with sawdust-like frass. Most severe on stressed, old, or recently pruned bushes. Remove and burn infested branches.
Tea Nutrient Management — NPK Guide
Nitrogen
150-200 lb N/acre/year, split 4-6 applications
Phosphorus
25-35 lb P2O5/acre/year
Potassium
60-100 lb K2O/acre/year
Application Timing
Apply nitrogen in 4-6 equal splits during the growing season (aligned with plucking rounds). P and K applied in 1-2 doses at the start and middle of the main growing season. Tea requires acidic conditions — use ammonium sulfate as the nitrogen source (also supplies sulfur). Avoid lime, which raises pH above the optimal 4.5-5.5 range.
Tea Irrigation Schedule
Total Water Requirement
48-100 inches (1200-2500mm) annual rainfall needed
Critical Stages
Flush growth periods and the first 2 years after planting are most water-sensitive. Tea cannot tolerate waterlogging but also suffers in prolonged drought. A dry period of 30+ days causes "banjhi" — dormant shoots that do not yield.
Irrigation Frequency
Most tea is rainfed. Where irrigation is used, drip or micro-sprinkler at 5-10mm/day during dry spells is optimal. Overhead irrigation increases blister blight risk. Mulching is critical to conserve soil moisture.
Tea Economics — Cost, Yield & Profit
Cost per Acre
$1,500-3,000/acre/year (established estate)
Yield per Acre
600-1,200 kg made tea/acre/year
Revenue per Acre
$1,800-6,000/acre at $3-5/kg (auction price)
Profit per Acre
$300-3,000/acre
Regional Context
Tea economics vary enormously by region and quality. Kenya CTC tea sells at $2-3/kg at Mombasa auction, while premium Darjeeling or Assam orthodox teas sell at $5-15/kg. Specialty teas can fetch $20-100+/kg. Labor is the largest cost (50-60% of total), making mechanization key to profitability in high-labor-cost regions. Smallholders in Kenya supplying factories typically receive $0.50-0.80/kg green leaf. Establishment cost for a new plantation is $3,000-6,000/acre with no income for 3 years.
Frequently Asked Questions — Tea Farming
How often should I pluck tea?
Plucking frequency depends on growth rate and quality goals. In tropical regions (Kenya, Sri Lanka, South India), pluck every 7-10 days during the peak growing season. In subtropical areas (Assam, Darjeeling), pluck every 10-14 days. For high-quality tea, pluck only the bud and top 2 leaves (fine plucking). For higher volume, coarse plucking takes the bud and 3 leaves but produces lower-quality tea. During dormant periods (winter in North India, dry season in East Africa), plucking stops or is reduced to maintenance plucks. Never let shoots grow beyond 5 leaves between plucks — this weakens the bush.
What is the best altitude for growing tea?
Tea grows from sea level to 2,500m, but altitude affects quality and type. Low-grown tea (below 600m) produces strong, thick liquor suitable for CTC (crush-tear-curl) production. Medium-grown tea (600-1,200m) balances yield with quality. High-grown tea (above 1,200m) produces the most prized, complex flavors — Darjeeling (2,000m), Ceylon Highlands (1,800m), and Kenya Highland (1,500-2,200m) teas command premium prices. Higher altitude means slower growth, lower yield, but more concentrated flavors. However, high-altitude plantations are more affected by blister blight and frost.
How do I improve tea quality?
Tea quality is determined by four factors: (1) Plucking standard — always pluck two leaves and a bud; coarse leaf degrades quality. (2) Timing — pluck in the morning when leaves have the highest concentration of flavor compounds. (3) Nutrition — balanced NPK with adequate potassium improves liquor quality; excess nitrogen produces lush but flavorless leaves. (4) Processing — deliver green leaf to the factory within 2-3 hours of plucking to prevent over-fermentation. For smallholders, quality premiums can increase income by 30-50% compared to bulk leaf. Cropple.AI can help monitor canopy health through satellite imagery, ensuring optimal plucking timing.
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