Geraniums: Here are the key fertilizing tips

 🌿 Fertilizer Type & Frequency

• Use a balanced fertilizer (e.g., 10-10-10 or 20-20-20) early in the season to support foliage and root growth.
• Switch to a bloom booster (e.g., 15-30-15 or 5-10-5) once flowering begins to encourage more blooms.
• Liquid fertilizers: Apply every 1–2 weeks during active growth.
• Granular fertilizers: Apply every 4–6 weeks.
• Slow-release fertilizers: Apply every 2–3 months; some last up to 6 months.

🪴 Container vs. In-Ground Geraniums

• Container geraniums need more frequent feeding (every 2–4 weeks) due to nutrient leaching from frequent watering.
• In-ground geraniums can be fertilized every 4–6 weeks.
• Use half-strength fertilizer for containers to avoid root burn.

🌱 Newly Planted Geraniums

• Wait 2–4 weeks after planting before first feeding.
• Use diluted liquid fertilizer or a small amount of slow-release fertilizer.
• Avoid fertilizing stressed or recently transplanted plants until they show new growth.

💧 Watering & Fertilizer Application

• Always water before and after fertilizing to prevent root burn and help nutrient absorption.
• Apply fertilizer to the soil, not leaves or stems.
• Flush the container soil every 4–6 weeks to prevent salt buildup.

📅 Seasonal Schedule

• Start feeding in early spring after frost.
• Continue regular feeding through the summer.
• Taper off feeding 6–8 weeks before the first frost.

• No fertilizing during winter dormancy.

🧪 Product Recommendations

• Liquid: Jack’s Classic 20-20-20, ALGOplus 4-6-8, Miracle-Gro Bloom Booster 15-30-15.

• Granular: 10-10-10 or 5-10-15 for garden beds.
• Slow-release: Osmocote Smart-Release (feeds up to 6 months), Miracle-Gro Shake ’n Feed.
• Organic: Compost, fish emulsion, Espoma Flower-tone, seaweed extract.