Weed seeds are dispersed by wind, water, animal droppings, animal feet, fur, and feathers, human shoes, tools, and equipment.

Think about the lawn care companies that go from yard to yard, spreading weed seeds and disease propagules as they go.

Every garden has weeds. Pulling them is part of the process of gardening.

In addition to seed some of the weeds you mention are spread by creeping stems and root fragments. As Tiffany says weeding is integral to gardening.

If you realize you've got something recurring from the roots, you may need a shovel instead of just pulling, or a smother if you have more time than energy.

The ones you mentioned describe our "lawn," and aren't hard to pull, when ground is soft, but do make a lot of seeds. Pulling mama plants before they drop more seeds can break the cycle, but might seem endless the first year or 2. It does work if you keep at it, then you have only the wind-blown and critter-brought seedlings, once the existing seeds in the soil have exhausted themselves.

Pray you never get Bermuda grass, St. Augustine, bahiagrass, or torpedo grass! Our "lawn" also has all of those, which don't just pull up, at least not with my hand and arm strength, and never stop trying to creep into every inch of every border of cultivated areas. A barrier like bricks, landscape timbers, or cinder blocks is necessary to separate areas if you have creeping grasses.

When mowing, aiming the chute away from bed areas can help prevent slinging more seeds into those areas.