Organic fertilizer in the Philippines gives gardeners a natural way to feed plants without synthetic chemicals. The tropical climate and abundant organic waste materials make the Philippines ideal for organic gardening. From kitchen compost to commercially produced vermicast, Filipino gardeners have access to a wide range of organic fertilizer options at every price point. This guide covers the most effective organic fertilizers and how to use them.
What Is Organic Fertilizer?
Organic fertilizer comes from natural plant, animal, or mineral sources. Unlike synthetic fertilizers made in factories, organic options break down slowly and feed the soil ecosystem along with the plants. They add beneficial bacteria, fungi, and organic matter that improve soil structure over time.
The key advantage is sustainability. Organic fertilizers build healthier soil with each application. Synthetic fertilizers feed the plant directly but contribute nothing to long-term soil health. After years of organic fertilizer use, your garden soil becomes darker, more crumbly, and holds moisture better.
How to Use Organic Fertilizer
Solid Organic Fertilizers
Mix solid organic fertilizers like vermicast or compost into the top 10 to 15 centimetres of soil before planting. For established plants, spread a 2-centimetre layer around the base and water thoroughly. Apply every 4 to 6 weeks during the growing season. Solid organics release nutrients slowly as soil organisms break them down further.
Liquid Organic Fertilizers
Dilute liquid organic fertilizers like fish emulsion or fermented plant juice according to label directions. Apply to moist soil around plant bases or use as a foliar spray in the early morning. Liquid organics deliver nutrients faster than solid forms. Apply every 2 weeks for active-growing plants.
Best Organic Fertilizer Options in the Philippines
- Vermicast (worm castings) . The most nutrient-dense organic option. Rich in beneficial microbes. P80 to P150 per kilogram. Best for potted plants, seedlings, and premium gardening.
- Compost . Affordable bulk soil amendment. Improves structure, drainage, and water retention. P30 to P80 per kilogram. Best for garden beds and large-scale planting.
- Fish emulsion . Liquid nitrogen source with NPK of approximately 5-2-2. Strong smell but highly effective for leafy vegetables and rapid growth.
- Banana peel fertilizer . Free potassium source from kitchen waste. Supports flowering and fruiting. Easy to make at home in 2 days.
- Fermented plant juice (FPJ) . Made by fermenting fast-growing plant shoots with brown sugar. Provides growth hormones and micronutrients. Popular in Korean natural farming methods practised in the Philippines.
- Coco coir . Not a fertilizer but an excellent organic soil amendment widely available in the Philippines from coconut processing. Improves aeration and water retention.
- Chicken manure (dried) . High-nitrogen organic fertilizer. Must be fully composted before use to avoid burning plants. Affordable at P20 to P50 per kilogram from poultry farms.
- Bone meal . Slow-release phosphorus source for root development and flowering. Apply at planting time for long-lasting nutrient supply.
DIY Organic Fertilizer Options
- Rice water. Save the water from washing rice and use it to water plants daily. Provides mild nutrients and beneficial bacteria. Free and available in every Filipino kitchen.
- Eggshell powder. Crush dried eggshells into fine powder. Mix into soil for slow-release calcium that strengthens cell walls and prevents blossom end rot in tomatoes.
- Coffee grounds. Add used coffee grounds to compost or sprinkle around acid-loving plants. Provides nitrogen, potassium, and improves soil structure.
- Seaweed extract. Soak dried seaweed in water for 2 days. Dilute and use as a foliar spray for micronutrients and growth stimulants.
Where to Buy Organic Fertilizer in the Philippines
- Agricultural supply shops. Every municipality has shops carrying vermicast, compost, and bone meal at wholesale prices.
- Weekend plant markets. Saturday markets in Manila, Quezon City, and Tagaytay often sell organic fertilizers from local producers.
- Online (Shopee, Lazada). Wide selection with delivery. Read reviews and check product expiry dates.
- Local farms and composting facilities. Buy direct for the freshest product at the lowest price.
- Urban Goes Green shop. Quality soil and gardening supplies delivered across Metro Manila.
Frequently Asked Questions
What is the best organic fertilizer in the Philippines?
Vermicast is widely considered the best organic fertilizer in the Philippines for its nutrient density and beneficial microorganisms. It provides a balanced, slow-release feed that suits most plants without risk of burning. Compost ranks second for its affordability and soil-improving properties. For liquid feeding, fermented plant juice and fish amino acid made from local ingredients offer excellent results. The best choice depends on your specific plants, budget, and whether you need a soil amendment or a concentrated nutrient boost.
How do I make organic fertilizer at home in the Philippines?
Filipino gardeners make organic fertilizer at home using several methods. Composting kitchen scraps and garden waste produces usable compost in 2 to 4 months. Vermicomposting with African nightcrawler worms creates nutrient-rich vermicast in 2 to 3 months. Banana peel fertilizer takes just 2 days by soaking chopped peels in water. Fermented plant juice uses plant cuttings fermented with brown sugar for 7 days. Rice water collected from washing rice provides mild nutrients for daily watering. All methods use materials freely available in any Filipino household.
Is organic fertilizer better than synthetic in the Philippines?
Organic fertilizer improves soil health over time by adding beneficial microorganisms and organic matter. Synthetic fertilizer delivers nutrients faster but does not improve soil structure and can cause salt buildup with repeated use. For long-term garden health, organic fertilizers produce better results. For quick nutrient correction, synthetic fertilizers work faster. Many Filipino gardeners use both, applying organic fertilizers as a base and synthetic fertilizers as a targeted supplement when plants show specific deficiency symptoms.
