Tracy DiSabato-Aust (Garden Designer and Author) gives expert video advice on: How do I recognize a 'weed'?; When should I start getting rid of weeds in my garden?; What is the best way to get rid of weeds in a new garden bed? and more...
When should I start getting rid of weeds in my garden?
Try to control weeds early in their growth cycle. You definitely want to prevent any seed formation on weeds because once the plants go to seed, you're going to have problems with that plant for several years, because the seed can lie dormant in the soil. So getting weeds out early will be your best defense.
Should I use a chemical weed control in an established garden?
It's difficult to use a chemical weed control in an established bed because of the risk of damage to the plants - the desirable plants that are there. You can come in and just touch the tips with a non-selective herbicide and that will sometimes work. What you can do is wear plastic gloves as the first layer. Come in with a layer of cloth glove overtop and have the herbicide on the cloth glove, then go in and just touch the tips of the weeds.