🌱 A Complete Guide to Planting SL28 & SL34 Coffee Seedlings in Kenya

By Kenya Coffee School & Barista Mtaani

Kenya’s world-renowned SL28 and SL34 coffee varieties are celebrated globally for their exceptional cup quality. However, achieving this excellence begins long before harvest—it starts with proper planting and disciplined early-stage management.

This guide provides a complete roadmap on what to do immediately after planting and how to manage your coffee throughout the year for optimal yield, plant health, and bean quality.


☕ 1. Before You Plant (Preparation is Everything)

Successful coffee farming starts with proper land and soil preparation.

✔ Site & Soil Selection

  • Choose deep, well-drained, fertile soils
  • Ideal pH: 5.5 – 6.5 (slightly acidic)

✔ Hole Preparation

  • Dig holes: 2 ft x 2 ft x 2 ft
  • Separate topsoil and subsoil

✔ Soil Enrichment

Mix topsoil with:

  • 20–30 kg well-decomposed manure
  • Phosphate fertilizer (DAP or TSP)

✔ Spacing Guidelines

  • 2m x 2m → intensive farming
  • 2.5m x 2.5m → recommended (better airflow & disease control)

✔ Planting Time

  • Best done at onset of rains:
    • March–May
    • October–December

🌿 2. Immediate Care After Planting

The first few weeks are critical for survival and root establishment.

💧 Watering

  • Water immediately after planting
  • Continue 2–3 times per week if rainfall is inadequate

🌱 Mulching

  • Apply dry grass or leaves around the base
  • Benefits:
    • Moisture retention
    • Weed suppression
    • Soil temperature regulation

🌳 Shade Management

  • Provide temporary shade using:
    • Banana leaves
    • Shade nets
  • Prevents heat stress and transplant shock

🚫 Early Pest & Disease Prevention

  • Apply preventive copper-based fungicides
  • Monitor for:
    • Aphids
    • Leaf miners

🪴 Staking & Protection

  • Use stakes to support against wind
  • Protect from livestock and physical damage

🌾 3. First 3–6 Months (Establishment Phase)

During this phase, your goal is strong root and vegetative growth.

✔ Field Maintenance

  • Weed every 2–3 weeks
  • Maintain consistent mulch cover

✂️ Light Pruning

  • Remove:
    • Dead shoots
    • Weak or diseased growth

🧪 Early Feeding

  • Apply CAN (Calcium Ammonium Nitrate) after 3 months
  • Rate: ~50g per plant
  • Apply in a ring around the plant (avoid stem contact)

🌳 4. Year-Round Coffee Management Calendar

🌦️ Rainy Season (March–May / Oct–Dec)

🌱 Fertilization

  • Apply:
    • NPK (17:17:17 or 20:10:10) for growth
    • Organic manure for soil health

🌿 Weed Control

  • Keep farm clean to reduce nutrient competition

🦠 Disease Control

  • Prevent and manage:
    • Coffee Leaf Rust
    • Coffee Berry Disease (CBD)

☀️ Dry Season (Jan–Feb / June–Sept)

💧 Irrigation

  • Critical for young plants—water regularly

🌿 Mulching (Highly Critical)

  • Increase mulch thickness to conserve moisture

✂️ Pruning & Training

  • Establish single stem system
  • Remove:
    • Suckers
    • Unwanted shoots

🧪 5. Simplified Feeding Program

StageFertilizerFrequency
0–3 monthsManure + DAPOnce (at planting)
3–12 monthsCAN / NPKEvery 3–4 months
1 year +NPK + Manure2–3 times per year

👉 Always apply fertilizer after rainfall or irrigation


🐛 6. Spraying & Pest Control

Common Pests:

  • Coffee Berry Borer
  • Aphids
  • Leaf Miners

Common Diseases:

  • Coffee Leaf Rust
  • Coffee Berry Disease (CBD)

Spray Routine:

  • Preventive spraying every 3–4 weeks during rainy season
  • Use:
    • Copper-based fungicides
    • Approved insecticides (only when necessary)

⚠️ Rotate chemicals to prevent resistance build-up


🌟 7. Key Success Tips for SL Coffee

✔ Always use certified seedlings
✔ Prioritize soil health and organic matter
✔ Avoid over-fertilization—balance is key
✔ Consistent pruning improves yield and structure
✔ Early-stage care determines long-term productivity


🚀 Projection

Growing SL28 and SL34 coffee is more than farming—it is a long-term investment in quality, discipline, and precision.

With proper management, your farm can consistently produce:

  • ☕ High yields
  • ☕ Premium specialty-grade coffee
  • ☕ Strong market value

Kenya Coffee School & Barista Mtaani remain committed to empowering farmers through training, innovation, and best agricultural practices—because great coffee begins at the farm. 🌱