How deep should I dig a planting pit for fruit trees?

For most fruit trees including avocado, mango, and citrus, dig pits 60cm × 60cm × 60cm (about 2ft on every side). Smaller crops like passion fruit and Wambugu apple can use 2ft × 2ft × 2ft pits.

When should I dig pits before planting?

Dig pits at least 4 weeks before planting. This allows the soil to weather, kills pests living in the pit walls, and lets the manure-soil mix settle so seedling roots make immediate contact.

How much manure per planting pit?

Use one debe (20 litres) of well-rotted cow or goat manure per pit, mixed thoroughly with topsoil. Fresh manure burns roots — always use compost that has decomposed for 3+ months.

What is the best soil pH for fruit trees?

Most fruit trees grow best in slightly acidic to neutral soil with pH 5.5–6.5. Avocado and citrus prefer 6.0–6.5, while blueberries need much more acidic soil (4.5–5.5). Test your soil before planting.

Farming Basics

Soil Preparation Checklist for Fruit Trees in Kenya

April 04, 2026 5 min read

Most fruit-farming failures trace back to poor soil preparation. A seedling planted into a shallow, unprepared pit will struggle for years — or die. The good news: getting it right takes one weekend and pays back for the life of the tree.

Step 1 — Test your soil

Get a soil test from KALRO, Crop Nuts, or your county agriculture office. The basics you need to know: pH, organic matter, nitrogen, phosphorus, potassium, and drainage class. Most fruit trees prefer pH 5.5–6.5.

Step 2 — Choose the right site

Full sun for at least 6 hours per day.
Gentle slope — never plant in waterlogged depressions.
Wind protection on the western side helps young trees.
Access to water within 200m if drip irrigation is planned.

Step 3 — Dig pits the right size

For most fruit trees, dig pits 60cm × 60cm × 60cm. For dwarf or hedge crops like passion fruit and Wambugu apple, 2ft × 2ft × 2ft is enough. Dig at least one month before planting so the soil weathers and pests in the pit walls die off.

Separate topsoil (top 30cm) from subsoil. Topsoil goes back first when you refill.

Step 4 — Refill with the right mix

1 debe (20L) of well-rotted cow or goat manure per pit.
200–250g of DAP fertilizer per pit, mixed thoroughly.
Optional: 50g of agricultural lime if your soil pH is below 5.5.
Refill topsoil first, then subsoil on top.
Water the refilled pit and let it settle for 1–2 weeks before planting.

Step 5 — Mulch and protect

After planting, apply 5–10cm of mulch (dry grass, banana leaves, or coffee husks) around the base, keeping it 10cm away from the stem. Mulch conserves moisture, suppresses weeds, and slowly feeds the soil.

Frequently asked questions

How deep should I dig a planting pit for fruit trees?: For most fruit trees including avocado, mango, and citrus, dig pits 60cm × 60cm × 60cm (about 2ft on every side). Smaller crops like passion fruit and Wambugu apple can use 2ft × 2ft × 2ft pits.
When should I dig pits before planting?: Dig pits at least 4 weeks before planting. This allows the soil to weather, kills pests living in the pit walls, and lets the manure-soil mix settle so seedling roots make immediate contact.
How much manure per planting pit?: Use one debe (20 litres) of well-rotted cow or goat manure per pit, mixed thoroughly with topsoil. Fresh manure burns roots — always use compost that has decomposed for 3+ months.
What is the best soil pH for fruit trees?: Most fruit trees grow best in slightly acidic to neutral soil with pH 5.5–6.5. Avocado and citrus prefer 6.0–6.5, while blueberries need much more acidic soil (4.5–5.5). Test your soil before planting.

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