There are a few schools of thought when it comes to whether or not you should till your lawn before seeding. Some people believe that if you till the soil before you seed, it will help the seeds to take root and grow better. Others believe that if you don’t till the soil, it will be harder for weeds to take hold and compete with your new grass plants.
The best way to decide whether or not to till your lawn is to do some research on your specific type of soil and climate. In general, though, tilling can help break up clumps of dirt, mix in organic matter like compost or manure, and get rid of any large rocks or other obstructions that might prevent new grass from growing properly. If you have a lot of weeds in your yard already, tilling may also make it easier for herbicides to reach them so they can be killed off before seeding.
However, tilling can also damage the structure of the soil if done too often (or if done incorrectly), which could lead to problems with drainage or erosion later on. It’s also important not to over compact the soil by walking on it too much after tilling – this will keep air pockets from forming underground which are necessary for healthy plant growth. Soil compaction can also be a problem when trying to establish a new lawn from scratch – in this case using a roller instead of walking on the area may be helpful until things start taking root.