Spectracide vs Roundup

Taking care of a garden or lawn requires a constant management over the weed and grass. In order to eliminate the weed and grass that you don’t want to grow in your land, you need to use a decent herbicide. Two of the most popular herbicide products on the market for dealing with weed and grass are Spectracide and Roundup. Although these two products have the same purposes, they do use different ingredients and mechanisms. Hence, Spectracide vs Roundup also deliver different results.

The Similarity
The similarity between Spectracide and Roundup is that they are both nonselective herbicides. What does that mean? That means they don’t select what they kill. They will kill most or all plants in the area. Such nonselective herbicides are best used before the lawn is planted with your favorite grasses and plants.

Before you start planting, you should first kill and remove the weeds in the area. You may also want to target specific spots such as the sidewalks. Note that young weeds are much easier to kill; herbicides become less effective if the weeds have begun to produce seeds or if the weeds are stressed by drought. So, it is wise to identify the weeds in the area so that you can plan the best time to apply the herbicide.

Spectracide’s Ingredient and Action
Despite the similarity, Spectracide vs Roundup use different ingredients and actions. The active ingredient in Spectracide is diquatdibromide, which is more commonly called diquat. This substance is used by spraying it directly onto the weeds and leaves. This substance will kill them by making them dry out quickly. It kills by a physical tough. However, it does not leave trace amounts in the soil and water.

Note that Spectracide Weed and Grass Killer is a contact herbicide. This herbicide will only kill and destroy the plants that get into contact with it. It will not kill underground rhizomes and tubers. So, it is best used for controlling the flowering of sugar cane, seed crops, potato vines, and aquatic weeds. But it is not effective for weeds with deep roots and rhizomes.

Roundup’s Ingredient and Action
On the other hand, the active ingredient in Roundup is glyphosate. This substance mimics and blocks a part of a molecule named phosphoenolpyruvate (PEP), which is vital in the metabolism of plants and animals. When absorbed, glyphosate moves within the plant to kill all parts of it.

Roundup is a systemic killer, as it can kill the weeds and plants from within. It takes a longer to kill the weeds, but it is effective for killing the larger and older weeds. It is useful for handling annual and perennial plants, broad-leaved weeds such as dandelions, sedges, weedy grasses, and woody plants.

If you are dealing with weeds that do not have deep rhizomes such as seed crops, vines, or aquatic weeds, Spectracide is quick and effective. However, for dealing with more difficult weeds that have deep rhizomes as well as older, larger weeds, Roundup should be your choice.