Only a drop-type spreader confines the pre emergent for lawns. Broadcast type spreaders can fling out an herbicide in a dangerous manner, getting into areas where you don’t want or don’t need the protection.
- If you find yourself dealing with this as a likely issue, and need to keep it out of a flower bed where you want to plant seeds or annuals, have someone walk along with you and hold a large sheet of cardboard or heavy tarp that can deflect the granules so they spread into the desired area only.
- If you have a relatively small area that needs to be treated, especially just a few bare spots here and there, some manufacturers as Lawn Care Birmingham AL of lawn and garden products offer a shaker can or shaker bag that is quite handy. You may be able to create one from a coffee can, by drilling properly sized holes in the top.
In all cases, the intent is NOT to cover the ground completely. You just want an even, consistent dispersal. In a square inch, you might only need a couple of granules, since typical application rates allow 1 pound to cover from 200 – 500 square feet. Read the Label Again! Calculate how large is your area! Plan your approach! and then start.
Some brands offer a Liquid Pre emergent in either a ready-to-use-spray bottle that attaches to your hose, or a concentrate to mix in your own tank sprayer. These are very convenient — a very quick way to apply the product to a large area. They are often more economical as well.
When to apply pre-emergent
So when to apply pre emergent? this is very important question. Be very careful, however, if the lawn area that you spray abuts any location where you will be planting soon. And even though it is liquid, it will not work if it remains on the grass blades.
Whichever method you select, it is imperative that you water the product adequately to get it into the top soil layer. This does not have to be done immediately, but within the time indicated on the label, usually 1-3 days. Waiting too long exposes the chemical to light and/or heat that will diminish its potency.
You can irrigate the lawn area, or allow rain to water it in, as long as it will be a sufficient amount. In most cases, you need not worry about using too much water. The exception is with the organic corn gluten pre-emergent which can get over-diluted, unlike the chemical products.
Some brands offer a pre emergence liquid in a ready-to-use bottle that connects to the hose, or a concentrate to mix your own tank sprayer. These are very convenient – in a very quick way to apply the product in a large field. They are often cheaper.
Be careful if the lawn area that spuitt is a place where you can plants quickly. And while it is liquid, it will not work if it stays on the grassy leaves.
Lawn Service Birmingham AL can help you more but whichever method you choose, it is important that you properly drain the product to get into the top layer of soil. This may not happen immediately, but within the time stated on the label, usually 1-3 days. If you wait too long, the chemical is exposed to light and / or heat will reduce the force.
To water the lawn, rain or get out for as long as is going to be enough. In most cases, you do not have to worry about using too much water. The exception is with pre-emergent organic corn gluten that may be in overheating, in contrast to chemicals.