Why choose organic gardening? (Benefits)

• Healthier food — no harmful chemical residues.
• Better soil — compost and manure improve soil structure and fertility.
• Lower cost — use household waste, animal manure and local seeds.
• Protects water and wildlife — fewer chemicals end up in rivers and lakes.
• Supports local varieties — grows Kenyan vegetables like sukuma wiki, managu and terere.

Basic principles of organic gardening

1. Feed the soil — use compost, animal manure and green manure (cover crops).
2. Use local seeds and good varieties adapted to your area.
3. Rotate crops to reduce pests and keep soil healthy.
4. Encourage beneficial insects and birds (e.g. bees and ladybugs).
5. Use water wisely — mulch and collect rainwater.

How to start an organic garden (step-by-step)

1. Choose a site: Sunny place (at least 5–6 hours sun), near water and safe from stray animals.
2. Decide size: Start small (1–3 m²). Small beds are easier to care for.
3. Prepare the soil: Remove weeds and loosen the soil with a fork or hoe. Mix in compost or well-rotted manure (2–4 buckets per m²).
4. Plan crops: Grow fast leafy vegetables (sukuma wiki, spinach), tomatoes, onions, beans and herbs like dhania (coriander).
5. Planting: Sow seeds or transplant seedlings at the right spacing. Keep a simple planting calendar based on rains.
6. Care: Water, mulch, remove weeds and watch for pests. Add compost regularly.

Making compost (simple methods)

Compost turns kitchen and garden waste into rich soil food. Use a compost heap, pit or bin.

Soil and water management

• Mulching: Cover soil with dry leaves or straw to keep moisture and stop weeds.
• Watering: Water early morning or late afternoon to reduce evaporation. Use a watering can or drip if available.
• Rainy seasons: Plant during long rains (March–May) and short rains (October–December).
• Water harvesting: Use jerrycans, barrels or simple drains to collect rainwater from roofs.

Pest and disease control (organic methods)

Use a mix of prevention and natural controls. Avoid synthetic chemicals.

• Crop rotation: Do not grow the same crop in the same place every season.
• Companion planting: Plant marigolds or garlic near vegetables to repel pests.
• Handpicking: Remove caterpillars or beetles by hand.
• Homemade sprays: Neem extract, ash or hot pepper + soap water spray (test on a few leaves first).
• Traps and barriers: Use light traps for moths, nets for birds and sticky traps for flying insects.
• Healthy plants: Strong plants from good soil resist pests better.

What to grow in Kenya (good choices)

• Sukuma wiki (kale), spinach, and sukumawiki varieties — fast and nutritious.
• Indigenous vegetables: managu, terere, onjera.
• Tomatoes, onions and green peppers — marketable and common.
• Legumes: beans and cowpeas — fix nitrogen and improve soil.
• Herbs: dhania (coriander), mint, basil.
• Fruit trees: pawpaw (papaya), mango and avocado (plant seedlings at the edge of the garden).

Planting calendar (simple): Plant leafy veg before the rains or with the start of long rains (Mar–May) and short rains (Oct–Dec). Use seedlings or plant directly after the first rains.

Tools and safety

• Basic tools: trowel, hoe, watering can, rake and a bucket.
• Protective gear: gloves and gumboots when needed. Wash hands after handling manure.
• Store tools safely and keep the area tidy to avoid accidents.

Classroom or home activities

1. Make a small compost bin from a used jerrycan or wooden box. Record temperature changes each week.
2. Grow sukuma wiki in a 10-litre bucket and observe growth in 4 weeks.
3. Test two plots: one with compost and one without. Compare plant health after 6 weeks.
4. Make a simple neem spray: soak 2 cups crushed neem leaves in 4 litres of water overnight, strain and add a teaspoon of soap. Spray in the evening.

Quick checklist before planting

• Site gets sun and has easy access to water.
• Soil loosened and mixed with compost.
• Seeds or seedlings ready and labelled.
• Mulch and simple tools are available.

Key terms (glossary)

Compost

Decomposed organic material used to improve soil.

Mulch

Material (leaves, straw) placed on soil surface to retain moisture.

Crop rotation

Changing the crop type grown on a piece of land each season to reduce pests.

Green manure

Plants grown and then turned into the soil to add nutrients.

Short test (answer in class)

1. What are two benefits of organic gardening?
2. Name three materials you can use to make compost.
3. Why is mulching important in Kenya?
4. Give one natural method to control pests.