I want to preface this by saying I have searched the forums, but the answers seem to be all over the place and I wanted some more direct answers. I'm also a new homeowner and new to any sort of gardening/landscaping.
What tool do you typically use to make your trench? How long/wide?
How wide and how deep do you make your trench?
How do you keep your lawn mower wheel from going into the trench and cutting at an uneven angle? If your answer is filling with mulch or rock, how is this any different then the mulch/rock you already have in the bed? Wont the grass just grow right into this like it does the bed?
How do you make straight or curved lines?
What's the easiest way to remove any grass that may currently be growing where you want the bed to go (I have St. Augustine)?
Any other tips would be greatly appreciated!