I agree and sympathize with almost all of the ideas and approaches on this feed following the first 5 days. I've lost too many hours trying various approaches, but I'm feeling good about this summer's approach. In 2019 for one of our market gardens 50' X 100', we tilled and mulched the perimeter. Grass snuck in from outside the perimeter and proliferated a bit from pieces we missed within. It always wins when you don't weed. And not weeding just leads to perennial weeds that gradually get even more established ("Succession") that outcompete your annual veg. Which is fine if you're working on a personal or I-don't-care scale. We care about minimum-disturbance and biodiversity to a great degree, but context is key. Our annual veg garden already has diversity within, and is surrounded by biodiversity with more planned. 3 years on, our last approach has graded as, um, "AIN'T GOOD 'NUFF". So, the latest twist, which I'm pretty confident about:
#1: Weed the perimeter, making sure every PERIMETER bed has at least 2-4 feet of path around it. Shovels, digging forks, whatever needed.
#2: Till the perimeter path site. Then... weed it again! Shovels, digging forks, whatever needed. Note that weeding MAY require taking out productive edge perennials that do or will harbor perennial weeds. Rake the perimeter so that it drains slightly towards the beds.
#3: Ditch the eventual exterior edge as deep as you have equipment, soil, or energy for. I'm going at 4-6".
#4: Cover perimeter ideally in post-industrial pore-free sheet goods. Too many weeds will find their way through almost all (all?) fabrics with pores. Ones we've tried with success: Rubber mats tossed away by schools and businesses because they got too nasty, pond liner roofing rescued from commercial flat roof recovering jobs, industrial belts and *controversy warning* recycled vinyl billboard signs cut and folded as needed. Do NOT bring said materials right up to the edge of the beds. Leave 1 foot or so space unless you're also using some cardboard underneath.
#5: Cover materials with mulch to protect them from UV, make prettier, and allow for mulch to break down into compost which you can push onto beds over time.
#6: Consider covering exterior edge of perimeter material (under the mulch) with some sort of edging--scrap wood, aluminum, whatever you have or can justify--to help fight edge degradation, assist in pegging it all down if needed, make any mowing easier, and retain the mulch.
#7: Maintain. But addressing weeds only within the garden is WAY easier than dealing with those AND ones sneaking in from outside.