Ask A Pro: 866-581-7378 Mon-Fri 9am-5pm ET Contact Us
Fast Free Shipping On Your Entire Order*
DoMyOwn - Do It Yourself Pest Control
  • Use "Spacebar" or "Enter" to expand the My Account navigation menu.
  • Use Down or Tab key to select next menu item.
  • Use Up or Shift+Tab keys to select the previous item.
  • Use Enter/Space key to visit the menu item.
  • Use Esc key to leave the submenu.
  • Use Left/Right arrow keys to allow users to navigate within the navigation links.
  • Use Down arrow key to expand the submenu and up/down arrow keys to navigate within the submenu.
  • Use Enter/Space key to select the menu/submenu items.
  • Use Esc key to leave the submenu.

Got Pests? Our DIY Kits Make It Easy - SHOP NOW >>

Princep Liquid Herbicide - Questions & Answers

Learn more about Princep Liquid Herbicide

Ask a Question
Princep Liquid Herbicide
$143.33
Out of Stock

Free Shipping

Info / Buy Now

Displaying 41 to 60 (of 80 questions)
Sort:
  • Asked by Nancy from Wi
    05/01/2019
    Q
    How does rain affect Princep Liquid Herbicide?
    A

    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. 

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Tyler from Coldwater
    03/24/2022
    Q
    Is Princep Liquid Herbicide safe on conifer seedlings?
    A

    Princep Liquid Herbicide is labeled to be used on Christmas tree plantings and in nurseries.   One 2.5 gallon jug of can cover 5-10 acres depending on the usage (1-2 qt per acre) rate needed for your use. The product will not kill existing weeds.
     

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Zachary from El Mirage, Arizona
    11/26/2019
    Q
    Can Princep be applied on residential landscape?
    The label says it can be applied on residential lawns.
    A

    Princep Liquid Herbicide is not labeled to be used in residential landscapes. It would only be used as a tank mix with another product in commercial landscapes per the product label.

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Tony from Leland Ms
    11/04/2018
    Q
    Will Princep Herbicide control or kill Virgina button weeds?
    A

    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. 

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Lk from Snowflake, Az
    07/07/2018
    Q
    What is the application rate of Princep Liquid Herbicide?
    How many ounces of Princep for how many square feet?
    A

    You will need to use 0.75-1.5 oz. of Princep Liquid Herbicide per 1,000 sq. ft. depending on your target weed(s). 

    Was this answer helpful to you?   Yes No
    1 of 2 people found this answer helpful.
  • Asked by Peter from Omaha, Ne
    08/08/2016
    Q
    Can this Princep be used to spray under aronia berries?
    Also someone said this was organic certified.. I do not see an OMRI cert, is it?
    A

    Princep Liquid Herbicide is not OMRI registered and is not labeled to be used around anything edible.  We apologize but we do not currently carry a product labeled to be used around edible berry plants for pre-emergent weed control. 

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Sammy from Hiram, Ga
    01/13/2018
    Q
    Is Princep Liquid the same herbicide as Princep 4L?
    A

    Princep Liquid Herbicide is the same as Princep 4L.

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Josh
    09/27/2017
    Q
    Can I apply Princep once ryegrass is mature?
    I overseed annual Ryegrass over Bermuda lawns in the fall.
    A

    Princep Liquid Herbicide states on the product label: Do not seed or overseed with desirable turfgrass within 4 months before application.  So you will need to wait at least 4 months after seeding to apply the product.

    Was this answer helpful to you?   Yes No
    1 of 2 people found this answer helpful.
  • Asked by Donna from Hesperia, Ca
    06/01/2017
    Q
    Why can't I buy Princep in California?
    A

    Princep Liquid Herbicide is listed by the state of California as a restricted product and this we cannot ship it to that state. Tenacity is a similar product you may be interested in that can be shipped to California.

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Jason from Monticello,in
    04/23/2018
    Q
    After spraying my yard with Princep Liquid Herbicide, my whole yard is turning yellow. Is this common?
    A

    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.

     

    Was this answer helpful to you?   Yes No
    1 of 1 people found this answer helpful.
  • Asked by Christine from Hawkins Tx
    12/08/2022
    Q
    Can l mix princep before emerging and grazon for ones already up
    A
    While a pre emergent and post emergent herbicide can typically be tank mixed and applied at the same time without issue, there are a few things to consider. Princep is not allowed to be applied to any grazing or pasture areas, so if this was an intended use site you would not be able to use this product. Instead you may consider a pre emergent like Prowl H20 which is labeled for grazing and pasture areas. A pre emergent is typically applied in the spring or fall in a single or split treatment application (6-8 weeks after the first) to prevent weeds from germinating. A pre emergent usually requires a higher water volume or irrigation/watering in after treatment to move it into the root zone and off the leaf surface of the existing vegetation to be effective in the soil. A post emergent is often applied with less water and should have no irrigation or rain for around 24 hours at least after treatment. These use instructions for each product can mean its often better to apply a pre and post emergent separately so as to not render one ineffective or short changed in the application process. If both Prowl H20 and Grazon are both labeled for your grass type and target weeds, you can tank mix them to apply at the same time. 
    Was this answer helpful to you?   Yes No
  • Asked by John from Roanoke Rapids
    11/09/2021
    Q
    What is the time frame for mowing before or after using Princep Liquid Herbicide?
    A

    For established turfgrasses, you should not mow 2 days before or 2 days after applying Princep Liquid Herbicide.

    Was this answer helpful to you?   Yes No
  • Asked by James from Augusta, Ga
    02/27/2022
    Q
    Will Princep control chamberbitter in lawn grasses? Or is Atrazine the only answer to control of chamberbitter?
    A

    Princep Liquid Herbicide is a pre-emergent herbicide that will not target actively growing weeds. Crew would be a great product to use for pre-emergent control of listed weeds.  Contains dithiopyr and isoxaben as its two active ingredients. Research from several extension pages do suggest the use of Atrazine for this weed, but we are not able to guarantee its effectiveness as the product is not labeled specifically for this weed. Atrazine is labeled for use only on St Augustine and Centipede established turfgrasses. Also, keep in mind given how persistent and pesky chamberbitter is, there is no one and done solution to take care of the weed so repeat applications may be necessary. 

    Was this answer helpful to you?   Yes No
  • Asked by Richard from Tyler, Tx
    03/01/2022
    Q
    Can Princep Liquid Herbicide be applied with an Ortho Hose End Sprayer?
    A

    A hose end spray is not recommended for applying Princep Liquid Herbicide or any other herbicide as these sprayers make it difficult to measure the volume of water that it puts out. When applying fungicides and herbicides, it is important that a sufficient volume of water is being used to adequately cover each 1000 sq ft as water is only acting as a carrier to distribute the active ingreident. Using too much of the active ingredient in not enough water, you risk damaging your lawn, use too little and you will not get adequate results.

    View our How to Calibrate Your Sprayer Video for a quick tutorial on how to do this process. 

    Princep Liquid Herbicide is applied at 0.75-1.5 fl. oz./1,000 sq. ft depending on your turfgrass type and program you are following.  Please refer to the product label for complete instructions.  
    Was this answer helpful to you?   Yes No
  • Asked by Jim from Chino Valley, Arizona
    03/11/2024
    Q
    Tumble weeds, is Princep Liquid Herbicide effective?
    Will Princep stop Russian Thistle from emerging? I would like to use it on my yard.
    A

    Yes, Princep Liquid Herbicide is labeled to control annual weeds such as Russian Thistle prior to germination. It can be applied to established warm season turfgrass only as directed.

    Was this answer helpful to you?   Yes No
  • Asked by Joe from Silver City, Ia
    03/02/2023
    Q
    Can I spray Princep early March with switch grass seeding? I read to spray simazine with switch grass seeding
    A
    Princep Liquid Herbicide does not list switchgrass as tolerant on the product label. Unfortunately, we are not aware of a pre emergent with simazine as the active ingredient labeled for switchgrass. 
     
    Please view the article by the University of Wisconsin Extension Office on Establishing and Managing Switchgrass for recommendations. 
    Was this answer helpful to you?   Yes No
  • Asked by Cliff from Pontotoc,ms
    03/14/2022
    Q
    If applying Princep Liquid Herbicide in the fall, how long do I need to wait for a spring application?
    A
    Princep Liquid Herbicide can be applied in either spring or fall for pre emergent control of listed weeds however since this cannot be applied more than 1 application per calendar year, this would not be recommended to apply in fall and then again in spring. The maximum rate is 3 quarts (96 fl oz)/per acre per application per calendar year. 

    Because timing varies from region to region, we suggest contacting your county extension office for information on timing in your area. 

    Was this answer helpful to you?   Yes No
  • Asked by Larry from Branford, Ct
    03/18/2022
    Q
    Can Princep Liquid Herbicide be applied to the soil before planting a garden?
    If so, how long after applying can garden be planted
    A

    You should not use Princep Herbicide where you have planted or where you are planning to plant edible vegetation. If you are planning to re-seed or overseed an area where you have sprayed Princep Herbicide, then you generally must wait at least 6 months after application before seeding. 

    Was this answer helpful to you?   Yes No
  • Asked by Tyler from Coldwater
    03/24/2022
    Q
    Is Princep Liquid Herbicide safe on switchgrass?
    A

    Princep Liquid Herbicide is not labeled specifically for switchgrass.
     

    Was this answer helpful to you?   Yes No
    0 of 2 people found this answer helpful.
  • Asked by Joe from Kirby, Arkansas
    12/07/2022
    Q
    I added grass clippings from my neighbor to my mulch pile. I later found out it had been sprayed with Princep
    If I use the mulch on my garden will it harm my plants?
    A
    The grass clippings from an area treated with Princep Liquid Herbicide should not be used in a vegetable garden or in areas not listed on the product label.
    Was this answer helpful to you?   Yes No
Displaying 41 to 60 (of 80 questions)