Most people would agree that Autumn and Spring are both good times for tilling, you can take advantage of the natural life cycle of plants, trees, and even weeds by turning their dead remnants over with the soil and allowing them to break down into helpful nutrients. Spring tilling is also very helpful, but you have to get the timing right. If the weather is still too cold, as it often is in very early spring, you shouldn’t be tilling your soil. A minimum of 16 degrees Celsius is required for effective tilling.