Pre-emergent herbicide time has come and gone, and if you have weeds showing their ugly little faces, the time has come for post-emergent weed control.
What is Post-emergent Herbicide?
Pre-emergent herbicides are meant to be applied before weeds germinate, or basically before you can see them. They should be applied before warm temperatures cause seeds to open and seedlings to grow. Post-emergent herbicides are meant to kill weeds after they have germinated. It is basic weed-killer.
Post-: after, following
Emergent: new or becoming visible
The name completely does the word justice as does the name for pre-emergent herbicide.
When to Apply Post-emergent Herbicide
Most weeds germinate when temperatures remain above 55 degrees Fahrenheit, so you can plan on ditching the pre-emergent herbicides once spring temperatures get warm. The best way to see if you need to apply post-emergent herbicide is to look in your grass. If there are weeds, then they need to be annihilated.
Selective Post-emergent Herbicide: Kills only certain types of plants and leaves the others alone. This can be used in situations where you want to kill weeds but not the lawn.
Non-selective Post-emergent Herbicide: Kills all leafy plants. These are really good for borders, walkways, driveways, dirt roads, alleys, and anywhere else where you want to get rid of all vegetative life.
Read the Label: In order to choose the right selective herbicide, you must read the label. Make sure your type of grass is included in the protected species, and make sure the weed you are trying to kill is listed as a target of the herbicide. If you are spraying around animals or children, make sure you know how long it takes for the yard to become safe again.
How to Apply:
The best way to apply post-emergent weed controllers is with water in a sprayer. This is because you can get good coverage, and the product will be absorbed by the leaves quickly, which makes applications more effective. Another reason to use a sprayer is that you can control the concentrations, so you can make a strong batch for stubborn weeds.
Useful tip: Use separate sprayers for different herbicides. If you mix sprayers, you risk cross-contamination and the accidental loss of your yard. Using separate sprayers, or at least well-cleaned sprayers will prevent this from happening.
There are not any easy answers for weed control, and those pesky plants need a year-round arsenal to fight against their invasion. One weapon in that arsenal is post-emergent weed control.
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