Calculate how much fertilizer your lawn or garden needs, based on area and type of fertilizing.
The calculator multiplies the area by the recommended fertilizer amount per square meter for the selected type:
Spring fertilizing is typically nitrogen-rich and gives vigorous growth as the lawn wakes up after winter, while fall fertilizing is more potassium-rich and strengthens the grass before winter, for better winter hardiness.
Spring fertilizer is usually nitrogen-rich and promotes fast growth and green color, while fall fertilizer is more potassium-rich and strengthens the grass's roots and cell walls so it survives winter better.
Yes. Too much fertilizer can burn the grass, cause vigorous but weak growth, and increase the risk of runoff into groundwater and waterways. Always follow the recommended dosage.
Yes, light watering after fertilizing helps the granules dissolve and reach the root zone, while also reducing the risk of scorching the grass.