You could potentially kill the desired turf if you exceed the amount of Prodiamine 65 WDG listed on the product label.
On Bermuda grass you can use up to 2.3 lbs of Prodiamine 65 WDG per Acre per year, which breaks down to 0.83 oz per 1000 sq ft. You can split up this amount into as many applications as needed. So if you are doing applications in Spring and in Fall, then your maximum rate at those times is 1.15 lbs/A (0.415 oz/1000 sq ft). You want to apply in late Summer or early Fall before soil temperatures dip below 70 degrees for poa annua prevention. In late Winter/early Spring, apply before soil temperatures reach 55 degrees to prevent crabgrass. In a warm place like Texas, you wil probably want one applcation in late Feb or March and then a second application 6-8 weeks later. If you are doing this, then you would lower that Spring rate to 0.2 oz per 1000 sq ft.
You can use this online tool to check soil temperatures for your area at any time.
Prodiamine 65WDG or Dimension 2EW are great pre-emergent herbicides to use. Be sure to refer to the product labels of each to see which meets your needs for your lawn type and the weeds you are trying to control.
In general, it is fine to mix a pre-emergent herbicide like Prodiamine 65 WDG and a post-emergent like Trimec as long as neither product label prohibits this mixture. Be sure you use the correct rates for each product. We also recommend a small jar test for compatability before mixing a larger tank. You also will need to activate the Prodiamine with irrigation or rainfall after at least 24 hours but within 14 days of the application, per the product label.
If you are going to be planting in the area you would like to use Prodiamine 65 WDG it would be best to plant first then apply the product so that you are not disturbing the barrier in the soil but applying before planting. It will only prevent seeds from germinating and is actually labeled to be used in landscape planting. The label states: Delay application to newly transplanted ornamentals until soil has settled around transplants.
You can use Prodiamine 65 WDG anytime during the year as long as the ground is not frozen or covered with snow or ice and the air temperatures are above freezing. Keep in mind that most spring weeds will start to germinate when soil temperatures reach about 55 degrees, so you do not need to apply if soil temperatures are below that threshold. You will probably need to rotate pre-emergent herbicides throughout the year in Florida since you have an almost constant growing season. This will help you avoid annual maximum application rates of any one herbicide.
Prodiamine 65 WDG (Generic Barricade) is not labeled for dallisgrass. Dimension 2EW would be a good choice for a pre-emergent for dallisgrass.
Prodiamine 65 WDG (Generic Barricade) does not list hairy bittercress on the product label. Dimension 2EW is a pre-emergent herbicide labeled for hairy bittercress as a better option.
When doing a split application of Prodiamine 65 WDG you should wait 6 weeks between applications.
Since Prodiamine 65 WDG is not labeled for use where animals graze or around animal facilities, we would not recommend using this in areas where the chickens will roam or feed. We would recommend waiting at least one year before allowing animals to graze in areas treated with this product.
The first thing you need to know when using an herbicide such as Prodiamine 65 WDG (Generic Barricade) is that the exact amount of water you dilute it with is not important. It is only important to make sure you are using the correct amount of product per 1,000 sq ft of lawn. Use too much and you risk damaging your lawn, use too little and you will not get adequate results. You will need to use 0.185-0.55 oz (1.1 tsp-3.3 tsp) per 1,000 sq ft . To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area note how much water it took you to spray that area, and that is the amount you will want to mix 0.185-.055 oz (1.1 tsp-3.3 tsp) of product with for each 1,000 sq ft area that needs to be treated.
Prodiamine 65 WDG (Generic Barricade) would need to be agitated if the mix is left to sit for 30 minutes or so and would need to be used on the same day of first mixing.
MSMA is a strong product and it's labeled for commercial use only, if not used appropriately it can burn any type of grass. We would not recommend to mix MSMA with Prodiamine; instead, spot treat with MSMA and you can do a broadcast application with Prodiamine 65 WDG.
Prodiamine 65 WDG (Generic Barricade) is not labeled to control clover or dandelions. We would suggest Isoxaben 75 WG for control of those weeds. You can tank mix this product with your Prodiamine and it is safe to use on all grass types. Please read and follow all of the label instructions.
Prodiamine 65 WDG is safe for use around azaleas; however, it is not labeled for use around roses.
Yes, Prodiamine 65 WDG can be applied to mulch beds to get keep weeds from coming up. Be sure to apply the product to the soil and water it in adequately so that it can get down into the soil to prevent the weeds.
The mixing ratio of Prodiamine 65 WDG is 0.36-0.83 oz. per 1000 square feet for St. Augustine grass. Be sure the irrigate the area after the product has been applied to activate it.
Prodiamine 65 WDG is a great pre-emergent for crabgrass as well as some other grassy and broadleaf weeds.
Hi-Yield Weed & Grass Stopper with Dimension is another option in a granule form.
For post emergent control, Ferti-Lome Weed Out with Crabgrass Killer is a good option or for a more professional grade product Drive XLR8.
Prodiamine 65 WDG (Generic Barricade) is applied at 0.185-0.55 oz (1.1 tsp-3.3 tsp) per 1,000 sq ft, this is usually mixed at 1 to 2 gallons of water. To decide how much water you want to use, you should mark a 1,000 sq ft area, fill your sprayer with water ONLY, and start walking and spraying just as if you were doing the actual application of herbicide. When you are done walking and spraying the 1,000 sq ft area notes how much water it took you to spray that area, and that is the amount you will want to mix 0.185-.055 oz (1.1 tsp-3.3 tsp) of the product for each 1,000 sq ft area that needs to be treated.
Prodiamine 65 WDG (Generic Barricade) is non-staining and is safe when used as directed around ornamental plantings.
