Best Pre Emergent Herbicides
Quali-Pro Prodiamine, Pre-Emergent Herbicide, 5 Lbs, Yellow Granules
- Pre-Emergent Herbicide Quali-Pros Prodiamine 65 Wdg Provides Pre-Emergent Grass And Broadleaf Weed Control. Flexible Application Allows For Both Spring And Fall Use Providing Season Long Crabgrass Control. Available In A 5 Pound Bottle.
- Features & Benefits Excellent Tank Mix Partner With Fertilizers And Iron Solutions
- Use Sites Nurse Landscape Turf Trees Golf Courses
- Effective Against Annual Bluegrass (Poa Annua) Henbit Knotweed Chickweed Spurge Foxtail Goosegrass
- Active Ingredient Prodiamine 65%
The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control – Covers Up To 5,800 Sq Ft (18 Lb)
- Apply This Product Only In Early Spring And Fall
- Barricade Professional-Grade Pre-Emergent Weed Control Is Designed To Prevent Weeds And Will Not Aid In Eliminating Existing Weeds.
- Contains 0.48% Of The Active Ingredient Prodiamine – Labeled To Prevent Over 30 Grass And Broadleaf Weeds
- Trusted By Top Turf Care Professionals To Prevent Problem Weeds Without Harming Desirable Plants
- Dg Pro Formulation Allows For More Particles Per Square Inch Of Chemical – Leads To Better Control Of Weeds
Yard Mastery Prodiamine 65 Wdg Professional Pre Emergent Weed Killer Herbicide For Crabgrass, Poa Annua And Other Problem Weeds – 5Oz Bottle – Water Dispersible Granule
- 5Oz Bottle – Professionally Formulated For Diyers Who Want Small Quantities Of Pre Emergent. Enough For 1 Entire Season On A 10000 Square Foot Yard.
- Stop Crabgrass – Use This In Spring And Fall To Stop Crabgrass And Poa Annua As A Pre Emergent But This Also Stops Other Listed Weeds. See Full Product Description Below.
- Water Dispersible Granule (Wdg) – Mix In Water And Sprayed Out As A Liquid Via Pump Or Battery Sprayer. Product Must Be Watered In.
- Spring And Fall Applications – Mix .183Oz Or 5.2 Grams Of Prodiamine 65 Wdg In 1 Gallon Of Water And This Spray Mix Can Cover 1000 Sq Ft.
- For All Grass Types – Ok On Kentucky Bluegrass Perennial Rye Turf Type Tall Fescue Bermuda Zoysia St Augustine Centipede And Bahia Grasses.
Best Pre Emergent Herbicides
Pre-Emergent Pesticides: The Correct Way To Kill Your Lawn’s Weeds
This is the story about how pre-emergent herbicides can be used to control weeds in your lawn. You must apply it correctly.
All summer you’ve stared angrily at those patches of crabgrass. It’s still spring and you aren’t over it.
You vow to never again and head to your local garden shop for weed killer, only to discover a wide array of confused herbicide options.
We’ll be introducing you to one of two types of weed-killing chemicals, the pre-emergent herbicides. Pre-emergent herbicides can be applied on your lawn to fight weed seeds. (If you already see weeds in your grass, see our discussion of the other major class, in the story ” Applying Post-Emergent Herbicides to Your Lawn Pre-emergence herbicides form the backbone of weed control programs,” says the University of Georgia Extension Service’s guide to weed control. “They do not control all weeds that may be present in a lawn, but they are effective for many of the most common lawn weeds.” Looking for the best pre-emergent for your lawn? We have compiled a list of our top picks.
Spring Herbicide Application
Pre-emergent herbicides are applied in spring to control summer annual weeds. These summer annual weeds can be either grassy or broad-leaf. To get the best results, apply herbicides to soil temperatures between 55 and 72 degrees Celsius for at most 36 to 72 hours. This should occur two weeks before seed germination. The majority of the USA experiences these soil temperatures from March to April. Check with your local county extension to find the latest soil temperatures. The map below will help you determine when and where to apply depending on which part of the country it is.
You can apply herbicides in two ways: liquid or granules. If you use granular pre-emergent herbicide it is very important to water the chemical into the ground because the active ingredient needs to penetrate the soil. The granule traps the herbicide until it’s activated by water. Liquid pre-emergent products are also affected by this because other plants and grass may trap the active ingredient, preventing it from reaching the soil.
Application of fall herbicide
Winter annual weeds can be prevented by applying fall pre-emergents. These weeds can germinate in fall. Timing is just as important for winter annual weed prevention. You can apply pre-emergent herbicides fall in mid to late summer depending on where your yard is located.
The most frequent winter annual weed is the Annual Bluegrass, also known as Poa Annua. It is an extremely hardy weed and can require several applications in consecutive years to be controlled. Fall weeds being to germinate when soil temperatures starts to dip below 70 degrees (soil temperatures about 50 degrees). For three to five consecutive days, apply when temperatures are in the middle of the 70s.
A preemergent application won’t last the following summer. Make a late spring or early-summer pre-emergent (see Spring Herbicide Aplicaiton Map).
These are some suggested herbicides to use in fall
The best pre-emergent herbicides:
Due to its low application rates, Prodiamine (an equivalent of Barricade) is the most cost-effective and long-lasting.
Isoxaben, a Gallery equivalent to Isoxaben, prevents the growth of a large number of Broadleaf Weeds. A great tank mix with other Pre-Emergents that prevent mostly Grassy Weeds.
Oxadiazon (Ronstar equivalent), is an excellent granular alternative that’s safe for all ornamentals and turf.
The Best Herbicides Post-Emergent:
Roundup ProMax offers reliable down-to-the root killing of both perennial and annual weeds. It is fast in raining 30 minutes.
Roundup QuikPro is a powerful and fast product that delivers visible results in as little as 24 hours, even in very cold conditions.
Speedzone Southern Speedzone Southern Speedzone Southern is a great control for Broadleaf Weeds. It’s safe to use in turfgrass.
If you’re looking for an all-in-one solution, TurfGro Combo Fertilizers allow you to feed your turf AND control weeds in one step! Horizon also offers formulas with Barricade Dimension Viper Atrazine Trimec.
For assistance with choosing pre-emergents or post-emergents for fall, visit your nearest Horizon store. You can also review many of the herbicides we have in stock by downloading our Product Catalog Free Landscape Maintenance Guide
How does Pre-Emergent Herbicide work?
To get a better idea of how pre-emergent works, let’s look at 3 key principles of pre-emergent weed control.
Principle 1: Pre-emergent herbicides can be used to kill germinating seeds.
Pre-emergent, as the name implies, is designed to kill weeds still in the soil. For best results, the weeds must not be visible above ground during application.
Important: Preemergent can not be used to kill existing weeds.
It will be killed only when the weed sprouts from the seed. The pre-emergent herbicide can be applied to seeds and they will not be affected if the seed remains dormant. This is why weed control is a constant process. It will always have seeds underneath the surface, and some may germinate each season. To significantly decrease large infestations, it is important to apply annually.
Remember, pre-emergent herbicide can affect desirable plants. Turf is included. You should be careful if pre-emergent is being applied to the turf and then seeded the next season. Seed first, then apply pre-emergent at least 6 weeks later to allow for lawn establishment. Seed at the latest 3 months following application of pre-emergent.
Principle #2: For best results, the pre-emergent needs to be correctly mixed and spread evenly across the targeted area.
The correct mixing of pre-emergent herbicides is necessary to ensure that the spray solution has the right strength. Read the label and calibrate the sprayer.
Careful coverage is crucial. Think of pre-emergents like a blanket – you need to cover an entire area through which the weed seeds cannot germinate. The open area allows weeds through, so spot spraying will not achieve anything. Instructions from the manufacturer will specify how much product is needed “per 1000′ or “per 14”. This information determines how much herbicide you must use for every gallon. For 1000 sq. feet of coverage, you will need 1 to 2 Gallons of spray solution.
Principle #3: It is important to water in pre-emergent herbicides.
Best Pre-Emergent Herbicides For Lawns- How To Apply Pre-Emergents
Weeds regardless of which type are a nightmare for any lawn or garden, and can create havoc in even the most meticulously maintained lawns! These unwanted weeds will not grow if you apply a preemergent herbicide to your lawn at the proper time.
Below I’ll introduce what a pre-emergent does as well as list out some of the best pre-emergent herbicides on the market today (along with best use cases).
To me, weeds are like cockroaches. The visible ones are but a small part of the entire iceberg. Many more are hidden and waiting to be discovered. They have natural characteristics that allow them to spread quickly.
They also compete for the space and water of your plants, which can lead to weeds becoming a nuisance.
You can let weeds take away your good plants and make it worse.
Getting rid of weeds after an infestation isn’t easy, and the best way to prevent them is by applying the right solutions before they even take root. Pre-emergent.
Pre-emergent herbsicides provide a way to control weed growth.
Crabgrass Preventers – The Top 5 Crabgrass Preventions (Crabgrass PRE-Emergent Hisbicides).
Crabgrass is a pesky annual weed that needs to be prevented early in the season. While there are many options for killing crabgrass, it is best to apply two applications of pre-emergent herbs as part of your early spring care and then again in late spring/early fall. That’s why controlling crabgrass is one of the first things we cool-season lawn care nuts to do to establish a healthy lawn.
After three consecutive days of soil temperatures at 55 degrees Celsius, crabgrass seedlings will begin to grow. A good rule of thumb is when you see the forsythia in bloom, the crabgrass is germinating. The ground temperatures approach 70° and crabgrass will germinate as long as there are no pre-emergent herbicides. It is important to know the exact time you should apply a crabgrass control. Apply prodiamine early in the spring in New England and then a second, pre-emergent herbicide application early in June. The vapor barrier created by these pre-emergent herbicides prevents crabgrass from rooting.
There’s a number of different crabgrass preventers on the market, from granular to liquids. After many years of trial and error, here are my Top 5 crabgrass pre-emergent herbicides.
Anti-crabgrass medication Prodiamine reigns supreme. It weighs 50 lb. Howard Johnson’s bag 0-0-7 of Prodiamine 0.37% covers 12,500 sq. ft. This product does not contain any other fertilizer than 7% Potassium. It is only used for transportation.
Apply this best crabgrass pre-emergent herbicide in the early spring as soil temperatures approach 50 degrees. Water this in with 1/2” of water immediately for best results. This product has been great for me over the past three seasons. I used it once in April, and my lawn was totally free of crabgrass. Personally, I don’t recommend applying a crabgrass preventer and fertilizer (N–P-K), this is because your turf may not be ready for pushing. This is especially true if you have prepared your lawn for winter by using a winter fertilizer application. These are great for your second and third split applications (more information below).
You should note the annual Prodiamine limit. So if you plan on using this in early April to prevent crabgrass, and in the fall to control poa annua , keep this chart handy (cool-season grasses listed only):
GRASS TYPES – LBS./ 1,000 SQ. GRASS TYPES LBS./ 1,000 SQ.
Tall Fescue 9.3 lbs./1,000 s. ft
Creeping Red Fescue 4.6 lbs.
Creeping Bentgrass 40. lbs.
Pre-emergent Synthetic Herbicides
Synthetic herbicides also called non-organic herbs are designed chemically to eliminate weeds. The active ingredients in synthetic herbicides are oxadiazon and dithiopyr.
These weeds can be controlled with synthetic pre-emergents.
Chemical preemergents should be reviewed and evaluated by the EPA
Less expensive
Possible to harm the environment
Could affect your soil’s fertility
Common Chemicals In Synthetic Pre-Emergent Herbicides
Chemicals used in synthetic pre-emergent herbicides are important. Each chemical is better for different types of weeds.
Certain contain Prodiamine that can stop weeds like chickweed and Dandelion, while others may have Dithiopyr to keep goosegrass from growing.
Some common ingredients that are found in preemergents are:
Prodiamine: Prevents grassy and broadleaf weeds like chickweed, witchgrass, clover, thistle, crabgrass, creeping bentgrass, and dandelion. The prodiamine is unable to manage nutsedge.
Dithiopyr, Prevents chickweeds, Oxalis clovers dandelion bittercress, clovers, Dandelion, Clovers, Dantoil, Clovers, Dantoil, Dandelion, Clovers, Dandelion, Crabgrass, Goosegrass and Annual Bluegrass. Dithiopyr struggles to control broadleaf and spurge weeds.
Benefin (aka Benfluralin): Prevents crabgrass, ryegrass, carpetweed, chickweed, annual bluegrass, sandbur, pigweeds, foxtails, goosegrass, and knotweed.
Trifluralin: Prevents Summer grass, annual bluegrass, chickweed, redroot, and red-dead nettle. Trifluralin may not be the best option if you want to control thistle and clover as well as wild turnip.
Isoxaben, which prevents the growth of dandelion. Thistle., clover., and chickweed. For controlling grassy, invasive weeds like carpetgrass, annual-ryegrass, or crabgrass, it is not your best bet.
Oxadiazon: Thistle, clover, dandelions, crabgrass, and thistle are all protected by Oxadiazon. It is possible to use other methods to control chickweed, spurge and pearlwort.
These ingredients can be found in pre-emergent herbicides. Which one you choose will depend on whether your herbicide is selective or nonselective.
How do you choose the most effective pre-emergent?
The longest lasting, most cost-effective and economical Prodiamine equivalent (Barricade equivalent), is Isoxaben equivalent (Gallery equivalent). It prevents the spread of a large number of Broadleaf Weeds. … Oxadiazon (Ronstar equivalent) is a great granular option – safe in all turf and ornamentals.Aug 1, 2013
What Month Should I Apply Pre Emergent?
The best times to use pre-emergent herbsicides are in spring and autumn. A pre-emergent herbicide is a preventative against seeds sprouting. The best times to use it, however, are in the spring as well as in the fall.
How do I choose a good pre-emergent for my lawn?
- The herbicides dinitroaniline (napamide), napropamide, dichlobenil, and metolachlor will destroy invasive grasses.
- Not all, but some
- broadleaf weeds. … Augustine grass). Dithiopy
- Dithiopyr, which is effective against approximately 45 grassy and broadleaf herb weeds.
Are We to Kill Weeds?
Use Pre-emergent. Pre-emergent Herbicide: These products eliminate weeds from the soil before they can grow. The timing is critical! Pre-emergent should be applied before soil temperatures reach 55+ degrees. This will ensure that seeds germinate. Jan 29, 2019.
.Best Pre Emergent Herbicides