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.
Princep is a pre-emergent herbicide only; it will not control the weeds that have already emerged in your yard. It is used before weeds emerge or after already emerged weeds have been removed.
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.
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.
Princep Liquid Herbicide should be watered in with either rainfall or irrigation within 10 days of application.
Yes, you can mix Trimec 992 and Princep together to treat for broadleaf and prevent broadleaf and grassy weeds.
Princep Liquid Herbicide is not labeld to be used on pastures where livestock will graze. The label states: Do not graze or feed turf clippings to animals or illegal residues may result. Please see our Range and Pasture Page for products that can be be used in pastures.
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.
Princep Liquid Herbicide should not be used in aquatic areas or where runoff could enter waterways. Please visit our Aquatic Herbicides page for products that can be use near and in these areas.
Princep Liquid Herbicide is only labeled to be applied to warm season grasses and would not be recommended on fescue. We do have many other pre-emergent herbicides that could be used instead depending on the type of weeds you are trying to prevent.
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.
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.
When using Princep Liquid Herbicide 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
Princep Liquid Herbicide is only labeled to be used on warm season grass and would not be safe on tall fescue.
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. There is not a specific temperature but if it gets close to 85-90 degrees it is possible that those seeds have already germinated.
Rain after an application of Princep Liquid Herbicide is okay. According to the product label, this product should be watered in with either rainfall or irrigation within 10 days of application.
No, Pricep Liquid Herbicide is not labeled for Virginia Buttonweed. We have found that EndRun works great to treat VA Buttonweed when applied per label. Blindside is labeled to suppress VA Buttonweed.
Princep Liquid Herbicide is not labeled to be used on granite drives or like areas so would not be recommended. Surflan would be a better option.
Per the product label, St. Augustinegrass, Bermudagrass, Centipedegrass, and Zoysiagrass species can experience yellowing after application of Princep Liquid Herbicide under certain circumstances.
The product label suggests the following reasons to help avoid turf injury: (1) Use only on turfgrass reasonably free of infestations of insects, nematodes, and diseases. (2) Do not use north of NC (except in the VA Coastal Plains) or on soils with a pH above 7.8. (3) Do not use on muck or alkaline soils. (4) Do not apply over the rooting area of trees or ornamentals not listed on this label. (5) Do not seed or overseed with desirable turfgrass within 4 months before or 6 months after treatment. (6) Do not apply this product to newly seeded grasses until they have overwintered and have a well-developed rhizome system. (7) Do not exceed 2 qt/A of Princep Liquid within 12 months of seeding grasses.
