Weeds-the number one garden anguish. Spend a week aerating and weeding your gardens. Along comes a summer rain storm and there right back in force.
What can be done to prevent them? Sadly there is no true preventative, products like preem will help if you have a small garden. A little too costly when you have many large gardens.
Mulches help but you will still need to weed.
A true gardener always has an achy back from weeding. It's a fact of life. There's no way around it.
Mega $$$$ help, you can hire a full time weeder.