The answer to 'why is my garden weeds' is that weeds can grow rapidly and take over a garden for several common reasons. Weeds thrive in nutrient-rich, moist soil, and they often outcompete desirable plants for water, sunlight, and nutrients. Improper mowing, lack of mulch, and poor soil health can all contribute to a weed-filled garden.
To get your garden back on track, you'll need to address the underlying causes. This may involve improving soil quality, using the right mulch, mowing at the proper height, and hand-pulling or using herbicides on persistent weeds. Calling a professional landscaper can also help diagnose and treat the problem if you're unsure of the best approach.