Garden Fertiliser Calculator
Garden Fertilizer Calculator
Area Dimensions
Fertilizer Details
Fertilizer Application Results
Total fertilizer needed: 0 g
Nutrients applied:
N: 0 g
P: 0 g
K: 0 g
P: 0 g
K: 0 g
Apply fertilizer evenly across the area. Water thoroughly after application. Always follow package instructions and local regulations.
Understanding Garden Fertiliser Applications
Master your garden's nutrition with our precise fertiliser calculator. Whether you're maintaining a lawn, growing vegetables, or nurturing flowers, this tool helps you apply the right amount of nutrients for optimal plant growth.NPK Ratios Explained
| Nutrient | Role | Deficiency Signs |
|---|---|---|
| Nitrogen (N) | Leaf growth, green color | Yellowing leaves, stunted growth |
| Phosphorus (P) | Root and flower development | Poor flowering, purple-tinged leaves |
| Potassium (K) | Overall plant health, fruit quality | Brown leaf edges, weak stems |
Common NPK Ratios by Plant Type
| Garden Type | Recommended NPK | Application Rate |
|---|---|---|
| Lawns | 20-5-10 | 25-35g/m² |
| Vegetables | 5-10-5 | 30-40g/m² |
| Flowers | 3-5-3 | 20-30g/m² |
| Fruit Trees | 7-4-10 | 40-50g/m² |
| Tomatoes | 4-7-4 | 30-40g/m² |
SEASONAL APPLICATION TIP
- Spring: Higher nitrogen for leaf growth
- Summer: Balanced feed for maintenance
- Late Summer: Higher potassium for winter hardiness
- Autumn: Low nitrogen to prevent soft growth
Best Application Practices
- Water the soil before applying fertiliser
- Spread evenly across the target area
- Keep fertilizer away from plant stems
- Water lightly after application
- Apply during cool parts of the day
- Follow local regulations and guidelines
Common Fertiliser Types
- Granular: Slow-release, good for base dressing
- Liquid: Fast-acting, ideal for foliar feeding
- Organic: Slower release, improves soil health
- Controlled-release: Season-long feeding
- Water-soluble: Quick absorption, good for containers
CONVERSION GUIDE
Quick conversion references:- 1 kg/100m² = 0.2 lbs/1000ft²
- 1 g/m² = 0.2 lbs/1000ft²
- 1 oz/yd² = 33.906 g/m²
- 1 teaspoon ≈ 5g granular fertiliser
Signs of Over-Fertilising
- Leaf burn or browning edges
- Crusty fertiliser build-up on soil
- Wilting despite adequate water
- Extremely rapid, soft growth
- Yellowing or dropping leaves
SAFETY FIRST
- Store fertilizers in original containers
- Keep away from children and pets
- Wear gloves during application
- Follow local water protection guidelines
Environmental Considerations
- Test soil before applying fertilisers
- Use slow-release options when possible
- Avoid application before heavy rain
- Consider organic alternatives
- Protect water sources from runoff
- Follow local regulations