How much work it is depends on what you plant for the climate you live in.* Planting natives will require less work.* How you prepare the soil will also determine how much work will be required to maintain your garden.* Using plants that grow in clumps instead of by runners will make maintenance easier when it comes to controlling the plants, but will allow for more space for weeds until the plants fill in and cover the ground.* Mother nature doesn't like blank spaces.* Generally only 15 minutes a week of weeding for the average garden should be all that is needed if you plan and prep well.
Newt
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.