Container plants need regular feeding to thrive. Learn about N-P-K ratios, organic options, and feeding schedules for healthy, productive balcony gardens.
Every fertilizer has an N-P-K ratio that indicates the percentage of three key nutrients: Nitrogen (N), Phosphorus (P), and Potassium (K).
A fertilizer labeled "10-10-10" contains 10% each of nitrogen, phosphorus, and potassium. The remaining 70% are filler materials.
High nitrogen for lush leaf growth
20-10-10 or higher nitrogen content
Every 2-3 weeks during active growth
Half-strength of package directions
Balanced nutrients with higher phosphorus
10-10-10 or 5-10-10 for fruit production
Change fertilizer as plants mature
Tomatoes, peppers, eggplants need frequent feeding
Lower nitrogen to prevent leafy growth
5-10-10 or similar low-nitrogen formula
Side-dress around plants, avoid direct contact with roots
Apply when roots begin to form, then monthly
Light feeding since they fix their own nitrogen
Beans and peas fix atmospheric nitrogen in soil
Use balanced fertilizer at half strength
Plant beans to naturally enrich poor soil
Fast-acting nitrogen source from fish byproducts. Excellent for leafy greens and herbs.
Nutrient-rich liquid made by steeping compost in water. Provides balanced nutrition.
Rich in potassium and trace minerals. Stimulates root growth and stress resistance.
Rich, odorless fertilizer from worm manure. Contains beneficial microbes.
High in phosphorus and calcium. Excellent for root development and fruiting.
Provide nitrogen and improve soil structure. Use sparingly to avoid acidity.