You will need to use 0.75-1.5 fl. oz./1,000 sq. ft depending on your target weed. Most folks use the higher usage rate.
The first thing you need to know when using an herbicide such as Princep Herbicide 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 0.75-1.5 fl. oz 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 0.75-1.5 fl. oz of product with for each 1,000 sq ft area that needs to be treated.
According to the product label, the manufacturer does not recommend folks use Princep Herbicide on Zoysia that far north. If you are looking for a pre-emergent for broadleaf weeds that can be used on Zoysiagrass, Surflan Pro would be an excellent option.
One 2.5 gallon jug of Princep Liquid Herbicide can cover 5-10 acres depending on the usage (1-2 qt per acre) rate needed for your use.
If Princep was applied a year ago, you should be fine to plant or seed the area now. Generally, you would wait between 4-6 months.
Princep Liquid Herbicide is a pre-emergent weed control product and it will not control the weeds that have already emerged in your yard. According to the Princep product label: Apply Princep Liquid after September 1 (after October 1 for annual bluegrass) before emergence of winter annual weeds. Fall applications of Princep Liquid will control annual bluegrass, burclover, lawn burweed, common and mouseear chickweed, corn speedwell, henbit, hop clover, spurweed, and parsley-piert. Princep Liquid will also control these weeds soon after emergence. For control of summer annual weeds listed in the Product Information section of this label, apply Princep Liquid in late winter before the weeds emerge. Apply in a minimum of 15 gallons of water per acre. Irrigate with 1/2 inch of water if rainfall does not occur within 10 days after preemergence treatment. Where annual bluegrass is the major weed, use 1 qt. of Princep Liquid per acre (22 ml or 0.75 fl. oz./1,000 sq. ft.). Use 1-2 qt./A Princep Liquid (22-44 ml or 0.75-1.5 fl. oz./1,000 sq. ft.) for control of other weeds. However, do not exceed 1 qt./A of Princep Liquid per treatment on newly sprigged turfgrass or on hybrid bermudagrass.
For control of summer annuals which emerge after the initial application, apply an additional 1 qt./A Princep Liquid at least 30 days after the initial application, but not after June 1. However, do not make more than 2 applications per year.
Both Princep Liquid Herbicide and Dimension 2EW have henbit and many other weeds and grasses on the label for control so either would work well for your needs. We do not recommend mixing the two together as it would not give you any extra control. We contacted several of our experts in the herbicide field and reps at the manufacturers of the products we carry and they all came to use with the same answer. There are no pre-emergent herbicides that will control Crown Vetch. The only way to control it is post-emergent form or by taking the area to bare ground and reseeding with which ever grass you choose. We apologize we could not be of more help for your situation but some weeds like Crown Vetch and also Nutsedge just cannot be controlled prior to germination. Please let us know if you have any other questions.
We do not recommend mixing Trimec 992 and Princep Liquid Herbicide because they have different modes on action. You want to apply the Trimec earlier in the season and then when/if other weeds start growing, you can apply Princep Liquid Herbicide. Be sure that your type of turf is labeled for application of both products.
Yes, Princep Liquid Herbicide can be used under mature trees and should pose no harm to them. Please refer to the product label for complete mixing and application instructions.
Princep Liquid Herbicide works as a pre-emergent herbicide to kill a variety of grass and broadleaf weeds. It is not labeled for blueberries. Can you tell us more about what you are treating for on or around blueberries so that we can offer you another product that will be effective?
Princep Liquid Herbicide is a pre-emergent that we carry labeled for knawel which is listed as german moss. Surflan is our most popular pre-emergent for sandburs/spurs if that is more what you are treating for.
Princep Liquid Herbicide is a pre-emergent weed control product and it will not control the weeds that have already emerged in your yard. According to the Princep product label: Apply Princep Liquid after September 1 (after October 1 for annual bluegrass) before emergence of winter annual weeds. Fall applications of Princep Liquid will control annual bluegrass, burclover, lawn burweed, common and mouseear chickweed, corn speedwell, henbit, hop clover, spurweed, and parsley-piert. Princep Liquid will also control these weeds soon after emergence. For control of summer annual weeds listed in the Product Information section of this label, apply Princep Liquid in late winter before the weeds emerge. Apply in a minimum of 15 gallons of water per acre. Irrigate with 1/2 inch of water if rainfall does not occur within 10 days after preemergent treatment. Where annual bluegrass is the major weed, use 1 qt. of Princep Liquid per acre (22 ml or 0.75 fl. oz./1,000 sq. ft.). Use 1-2 qt./A Princep Liquid (22-44 ml or 0.75-1.5 fl. oz./1,000 sq. ft.) for control of other weeds. However, do not exceed 1 qt./A of Princep Liquid per treatment on newly sprigged turf grass or on hybrid Bermuda.
For control of summer annuals which emerge after the initial application, apply an additional 1 qt./A Princep Liquid at least 30 days after the initial application, but not after June 1. However, do not make more than 2 applications per year.
We do not recommend applying RoundUp to the area because it is a non-selective herbicide that will eradicate anything that is sprayed with the product. Including the desired vegetation.
Princep Liquid Herbicide is a pre-emergent that will prevent weeds from germinating in the soil and will last about 4-6 months in the soil. It will not kill any actively growing weeds. Timing is always key when applying pre-emergents and will vary by region and the best person to ask about application timing is your local master gardener who works at your local cooperative extension office.
Yes, you can add a dye indicator such as Turf Mark Blue to Princep Liquid Herbicide.
Yes, it not actually recommended to use a hose end sprayer with Princep Liquid Herbicide or any other herbicide as they are no where near as accurate for application or even as a backpack sprayer. Using a backpack sprayer like you mentioned would be the ideal form of application and just follow the product label instructions for mixing.
You will need to use 0.75-1.5 fl. oz./1,000 sq. ft depending on your target weed.
The first thing you need to know when using an herbicide such as Princep Herbicide 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 0.75-1.5 fl. oz 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 0.75-1.5 fl. oz of product with for each 1,000 sq ft area that needs to be treated.
The Princep Liquid Herbicide will be a light tan color once mixed with water.
Princep Liquid Herbicide works as a pre-emergent herbicide so application timing is crucial and varies from region to region and current weather conditions. We would recommend contacting your local Master Gardener for recommended application timing.
Princep Liquid Herbicide can be mixed with any of the liquid fertilizers found here. Which you choose would depend on what nutrients your lawn is lacking at the time of application. We recommend to contact your cooperative extension office and speak with the Master Gardener on duty. The Master Gardener will be able to assist you with a soil analysis.
Princep Liquid Herbicide is a professional grade product and not sold retail. We can ship it to you with our Fast Free Shipping!
The application rate for Princep Liquid Herbicide will vary from 1-5 pints in a minimum of 20 gallons of water per Acre, depending on where you are applying it. For all application directions and restrictions, see the section "Application Procedures" on page 7 of the product label. It is always most important to use the correct amount of product applied evenly over the area; the exact amount of water will vary depending on your equipment and speed of application. If you plan on mixing other chemicals with Princep, then you will need to do a compatibility test and then calibrate your mixture according to the section "Mixing Procedures" on page 8. We generally do not make recommendations on fertilizers since the needs of your turf will vary. You can browse all our Liquid Fertilizers here.
