I doubt there is anyone who enjoys pulling weeds, though now at the end of the season is a great time to do some preventive measures to prevent new growth next season.
Kill your weeds early: The sooner you pull your weeds the easier it is to keep up with them. In addition, if you pick the weeds before the mature and flower and drop seeds you will save a ton of time pulling weeds for every one of those seeds that drop. Call me old fashioned but I normally skip the whole herbicide method and just pull the weeds by hand. Not only does your lawn or garden immediately look better, there is no coming back to see if the weeds need another dose of spray and the whole environmental part of keeping some chemicals out of our water system.
Mulch: This is one I didn’t completely understand until I had been gardening for a while. I for one never have found “beauty bark” beautiful and have always preferred the more natural look and benefits of fertile soil. But that is entirely why you want to use a mulch such as ground bark, straw, pine needles, leaves, newspaper, rubber bark, or even some old carpet. This helps prevent weeds in twp ways. First, it blocks light from the potential little weed seedlings to make their way to the surface. Second, they are not fertile mediums to grow seeds, which is exactly what you are looking for for your large flower beds which like to create good crops of weeds. As a final benefit they help insulate and hold water down for the plants you want to thrive having great growth and eventually shading out those “poor” weed seedlings. just 3-4 inches during the fall and your back should be bending over much less next spring.
If you are thinking, “What about my vegetable garden? I want seeds to be able to grow in there next year.” For your vegetable garden I highly recommend chopped leaves and a vegetable garden mulch. If you happen to have a leaf blower/vacuum that will chop them up all you need to do is empty those bags in a thin 1-2 inch layer across your garden. I used to have one of these though accidentally sucked up a rock which didn’t “chop” well and broke it so the alternate method I use is the following. Bag your leaves throughout the fall and once the leaves stop falling dump them out in a long row in your yard. Then use you lawnmower with bagger attachment and run them over until they are all chopped up. You can also do this more frequently during the fall but I find this a good time to use all the gas in the lawnmower before the end of winter feeling more like I am doing something more meaning other than just letting the mower sit there until it burns off the remaining fuel. With these leaves on the surface you smother any weed seeds and also block out all light to the soil. When spring time comes you simply work in the decomposed leaves into the soil and your garden has a head start with some good organic matter.
Pre-emergent weed control: For some parts of your yard like your lawn mulching is not really an options so to protect against pesky weeds like one of my personally loathing weed, annual bluegrass. Which grows and seeds so close to the ground it is nearly impossible to pull the plants to prevent the spreading. Pre-emergent herbicides is the solution to this problem. Pre-emergent herbicides work by preventing weed seeds from germination by inhibiting cell division in their tiny root system. Given these plants are annuals a successful application can rid you yard of these weeds until they eventually blower over from a neighbors. Pre-emergent herbicides can be purchased as a chemical or the organic method is applying glutton corn meal which normally can be purchased from your local feed store. One thing to remember is that this also will prevent you normal grass seed from germinating as well so be sure to time your application after with with enough lead time to allow the pre-emergent from wearing off.
Grow a cover crop: Growing a cover crop has two major benefits to your garden. Various legumes, grasses, and buckwheat make good options for for cover crops to plants while you garden is empty. First it creates a natural shade from the sun making it hard (or impossible) for seedlings are the surface to survive under their great shadows. Second it provides organic mater as “green manure” to add nutrients to your soil. One recommendation is to make sure you do a little research on the plant you choose as a cover crop, if you accidentally wait too long to “harvest” your cover crop it could go to seed and you may have an entirely new weed problem on your hands.
Cook the soil: When all else fails apply some black plastic (thicker the better) covering to your planting beds and let them “cook” throughout the fall/winter. Like mulch this will prevent any light and most water from entering the areas covered. This will essentially cook the soil killing any weeds, seeds, fungi, or anything else living in that area. Though this is very effective in eliminating weeds and disease from your soil it also kills everything else including good bacteria that your friendly worms like to visit your garden, so you soil may take sometime to recover and return to becoming living soil. I would recommend this method as a last result when the previous methods have proven to be completely unsuccessful.
Just for some positive outlook, you can also think of weeds as green manure assuming you are adding these to your compost, so even out of control they still can decompose and help your garden…