Is it too hot or cold to use a weed control product?
All weed control products are influenced by environmental conditions such as, air temperature and humidity levels. Herbicides are most effective when applied to growing weed plants at 70 to 85 degrees Fahrenheit. During periods of high heat and humidity, both the turf and the weeds are stressed and applying weed control products on any stressed plant can cause damage to turf as well as poor weed control (i.e., it may take much longer to see actual weed death). If you must use weed control products under these conditions, use them in the early evening when humidity and temperatures decline to help reduce injury potential. Likewise, cold temperatures will affect the rate of weed growth too and will affect the reaction of many weeds to weed control products. Generally speaking, it will take longer to see weed wilting or weed death when using weed control products in cooler weather.
With all the different types of weeds killers, how do I decide which one is right for my problem?
First, you should identify the weeds you are trying to control. Is the weed a grassy weed or broadleaf weed? Is it an annual or perennial? Does it appear in the spring, summer or fall? Answering these questions is important in deciding which weed control product to apply. The categories listed below detail the differences between herbicides:
Pre-emergent weed control products are applied to stop the weed seeds from germinating. Be aware that pre-emergent products will stop all seeds from germinating.
Post-emergent weed control products are applied to weeds that are already growing. Good leaf coverage is important.
Selective weed control products kills certain types of weeds without harming desirable plants.
Non-selective weed control products kills all types of plants.
Systemic herbicides are absorbed by the plant through the roots or leaves and spread throughout the plant.
I want to renovate my garden and install a new flowerbed. How can I do this and be able to plant in the same season?
We recommend using Bonide’s KleenUp Grass & Weed Killer. This is a non-selective systemic herbicide that will kill everything it is applied to and will allow you to plant in one week.
Weeds keep coming up through the cracks in my driveway and sidewalk. What can I use to kill the weeds that won’t harm or stain my driveway or sidewalk?
To kill these weeds, use a non-selective weed control product.
It rained 24 hours after applying a weed killer to my lawn. Should I spray again?
No, you should not reapply the herbicide. Most herbicides will have been absorbed into the lawn by then. Wait a few weeks to see if the weeds are dying. If they are not showing signs of dying (i.e. turning yellow/brown, shriveling up) then reapply.