My garden: fertilizer calculator
Calculate fertilizer quantities for your lawn, flowers, vegetables and trees. Save your zones and measurements, choose a shopping period and find pack sizes for each growing space.
How it works
My garden helps you calculate how much fertilizer each zone needs, choose pack sizes and prepare one basket for your garden.
Add your zones
Choose your plants: lawn, flowers, vegetables or trees. Give each zone a name.
Set sizes and dates
Enter the area or number of plants and select the months you are planning to buy for.
Calculate the fertilizer
Choose a product and application method. The instruction rate and zone measurements determine the required amount.
Prepare your basket
Choose a pack size, review the number of packs and total cost, then add the calculated products to your basket.
Opening your garden…
Calculate fertilizer for your garden zones
Save the lawn, flower beds, vegetable beds and fruit trees as separate zones. Choose a crop, fertilizer and application method for each one. The calculator uses the selected product’s instruction rate and your zone measurements to help you work out pack quantities and purchase costs.
How do I work out how much fertilizer to buy?
Enter the measurement required for your chosen application method: area, plant count or another value specified in the instructions. Check the rate and number of applications. After calculating, choose a pack size and review the total fertilizer quantity, number of packs and cost before adding them to your basket.
Does the selected period mean I should fertilize every month?
The selected months help you plan a seasonal purchase. Set the number of applications separately according to the product instructions. Consider the weather and plant condition; choosing a period does not mean applying fertilizer every month.
How do I save my garden for the next purchase?
Without signing in, your zones are saved in this browser. Sign in to add the garden to your account and access it on other devices. For your next purchase, change the period, check zone measurements and recalculate the amount you need.