How To Calibrate Your Fertilizer Spreader

If your spreader's setting is not listed on the bag, you can determine which setting to use by conducting this simple test:

1. Read all directions and precautions on the bag.
2. Weigh out enough of the fertilizer to cover 100 m² and put it in the spreader. (Bathroom scales will help you do this.)
3. Set your spreader on a low setting. (Usually one quarter of the way open is a good starting point.)
4. Spread the material you put in the spreader over 100 m2 (10 m x 10 m) [1076 sq. ft. (33 ft x 33 ft)].
5. Ideally the product will run out when you get to the end of the 100 m² area. If you have a little left over. Increase the setting slightly. If you don't have enough to cover the full 100 m², reduce the setting slightly.
6. Write the setting and product name on a piece of tape and apply to the spreader for future reference.

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