Apply Weed Killer and Herbicides

Apply Weed Killer

Using chemicals on your lawn should be performed with caution. Run off from over spraying or on the wrong days may cause more damage to surrounding vegetation than the actual weed killing. Following the manufacturers instructions for the weed killer along with the sprayer should go hand in hand. Understanding the type of weeds you are wanting to get rid of is another important factor. You should also be aware of the type of grass you are growing as some weed killers may adversely affect the growth.

Time of Year
Weed killers are most effective when the growth is strong in late spring and early summer. The stronger and more vigorous the growth the more effective the chemical is on the errant plants. A good nitrogen fertilizer is also recommend to be applied 10 to 14 days before the application of the weed chemical. Hot, dry weather should be avoided as this can leave large bare patches from the dead plants. New grass growth will quickly fill in these areas when strong growth is occurring. Do not spray when rain is in the forecast as the chemical can run off and be diluted. This will weaken the effectiveness of the spray.

Spray or Granule
Sprays are more effective for concentrated areas that may need heavier treatments. Of course they should only be used on calm days. The wind can carry over spray to other growing vegetation and could be adversely affected. Care should also be taken that the chemical does not drift into any landscape water features that contain fish. Not only could the chemical kill any aquatic plants, but the toxins may also cause a fish kill. Granules can be used for most applications following the manufacturers instructions. This type of application may require a watering in period. Heavy rains can flush the chemical granules away before they have a chance to dissolve. Some granules may also contain a fertilizer which will feed the plants left behind for a quick fill in bare areas.

Seeding Bare Spots
After the weed killer has done its job, there may be small to large areas of bare spots. Obtain a mixture of fast germinating seed for your climate along with the type of grass that is growing in the majority of the lawn area. The fast seed will quickly take root and allow the other seed to germinate. Apply a recommend fertilizer to the new plants and keep plenty of water on the new growth. Do not allow the area to dry out as young seedlings will quickly die in dry weather.