Often confused with cultivators, garden tillers serve a very different purpose and therefore having both of these tools in your garden arsenal is key to achieving the best results for your garden. Where a cultivator can be used for spreading fertilizer and weeding etc, Tillers are designed for more heavy duty which require actively breaking the ground. Generally petrol powered, tillers are made with heavier duty, longer tines which can deeply penetrate and work the soil and tend to be much more powerful machines than cultivators.