Barricade 4FL can be applied to newly transplanted plants or established plants as directed on the label.
Apply before or after bulbs emerge but before bulbs bloom and weeds emergeNo, the Barricade 4FL Herbicide does not contain a dye. You will have to purchase one separately if you choose to add.
Yes, Barricade 4FL Herbicide is safe to be used in perennial ryegrass and bermudagrass.
You can typically apply a pre emergent such as Barricade 4FL Pre-Emergent Herbicide (Prodiamine) the same day or the following day as a fertilizer application as long as they do not have competing use instructions regarding watering in after treatment and they do not contain the same active ingredient as a pre-emergent.
When applying a product like Barricade 4FL Pre-Emergent Herbicide (Prodiamine) you should inspect the lawn and see if the soil is still saturated or not. Sometimes an inch of rain is absorbed well into the soil, and other times the soil may already have a lot of moisture and that could cause runoff and uneven weed control. If it was only a light rain and the soil is not saturated it should still be okay to apply. You do need to be sure to water in with irrigation or rainfall after application as directed on the label
You will need to use 0.5 – 1.1 oz of Barricade 4FL per 1,000 sq. ft. for ornamental type areas, the amount of water you will need depends on the amount of water it takes to irrigate that area. If you're unsure, you will need to calibrate your sprayer. Please read the product label for complete application instructions.
You would just squeeze the bottle to get the needed amount into the measuring chamber on Barricade 4FL Pre-Emergent Herbicide Following the instructions for the "squeeze and pour" bottle in this video should help. It says for "insecticides", but it will work for this too.
We always recommend using products exactly as directed on the product label for several reasons. First, a product label has been reviewed and approved by the EPA and, therefore, provides the legally allowed uses for a product such as an insecticide or herbicide: The Label is the Law. Second, lots of time and money goes into developing and testing products, which means the label rates are what have been proven scientifically to be effective for treating the pests/weeds/diseases on that label. Using more is not necessarily going to be better. In fact, using too much Barricade 4FL Pre-Emergent Herbicide can cause undesired effects on your turfgrass and on the environment, and simply wasting your time and money.
Ideally watering in is done right after application of Barricade 4FL Pre-Emergent Herbicide but can be within 7 days of application. Timing your treatment with the rainfall is the best way to go as long as not too much! It only needs to be watered in ½ inch.
As with any pre-emergent you do have to water in after application to get down into the soil to create the barrier. Per the product label: Weed control is most effective when Barricade 4FL is activated by at least 0.5 inch of rainfall or irrigation or shallow incorporation (1-2 inches) before weed seeds germinate and within 14 days following application.
Yes, once you apply Barricade 4FL Pre-Emergent Herbicide (Prodiamine) in February, you can apply fertilizer at or around the same time. The only time we don't recommend applying a fertilizer is if it already contains a pre-emergent. If it is only a fertilizer, you can apply it at any time.
Barricade 4FL Pre-Emergent Herbicide (Prodiamine) does not list Ajuga reptans on its label. For a complete list see the label here. The Dimension product label states that ajuga carpet bugle is tolerant to applications as an alternative.
Barricade 4FL Herbicide can be applied once or twice per year as long as you don't go over the 1.1 ounces per 1000 sq. ft per year(21 oz per acre/per year) for Turf Type Tall Fescue.
Doing a split application 60-90 days following the 1st application will give you longer residual control as opposed to a single application. We would recommend doing a second application at the 0.5 oz rate per 1000 sq ft to get the longer monthly residual.
Please review the charts of page 12 & 12 of the product label for more information.
Yes, Barricade 4FL Pre-Emergent Herbicide can be applied to creeping juniper and other listed varieties of juniper as directed.
You should not apply Barricade 4FL Pre-Emergent Herbicide (Prodiamine), or any pre-emergent, if you are planning to seed within the same season. Also applying a top layer of soil over a pre-emergent application would be above the barrier it creates so will not offer full protection. You should apply any top layer of soil before applying a pre-emergent for the best barrier to prevent weeds..
Yes, you are correct. As with most herbicides the exact volume of water is not very important, you just need to be sure you are getting the correct amount of product on a specific area, such as 1,000 sq. ft. What you are referring to on the label is the total amount of active ingredient that is in each gallon of product.
There should be no issue if applied at the product label rates. The shelf life of Barricade 4FL Pre-Emergent Herbicide (Prodiamine) is 3-5 years if kept in a cool dry area.
Barricade 4FL Pre-Emergent Herbicide (Prodiamine) is not labeled for prevention of dandelion. You could use Dimension 2EW or Gallery 75 DF as a pre-emergent for dandelion in the fall.
Barricade 4FL Herbicide is not specifically labeled to be used around clover, so we cannot advise on this. For the best time to apply a pre emergent in your region to get the most effectiveness, we would recommend reaching out to your Master Gardener at your county extension office for a recommendation.
