Best Selective Weed Killer for Flower Gardens: Our Top Picks

Best Selective Weed Killer for Flower Gardens: Our Top Picks

Everyone seemed to agree that weeds growing in their flower gardens was a bad thing. And this makes you sad because it might destroy the beauty of the flower garden. Most Gardeners remove weeds at their root and perhaps the stem as well since it takes time and there’s no guarantee they won’t return. A Selective Weed Killer is a weed killer that targets only certain plants in your flower garden while leaving the blooms unharmed. If you want quick results, add some Non-Ionic Surfactant to boost penetration and coverage. It’s most efficient when the weed is actively growing in your flower garden, such as during the rainy season. Because the rain may wash away your herbicides, you can’t promise how many applications you’ll get in the rainy season. For optimum efficiency, 1-2 applications a week during the sunny season is sufficient.

If you are looking for a Selective Weed Killer for Flower Gardens, then this article is for you. We review different brands of Selective Weed Killer for Flower Gardens to help you find out which one is for you. We also include a quick buying guide, so you have an informed decision before buying.


Selective Weed Killer for Flower Gardens: Buying Guide

What is selective weed killer and how does it work?

There is a common misconception that all weed killers are “selective”. This means they only target certain types of weeds, instead of everything. The Selective Weed Killer is a more accurate term since it kills specific types of weeds without killing other desirable plants. It’s not really selective, but it does a good job at killing your weeds without harming your flowers or vegetables in the flower garden. Not many people know this, but there are two types of herbicides: contact and systemic. Contact Herbicides kill by destroying the plant directly after application to the surface area where the herbicide came in contact with. However, Systemic Herbicide works by being taken up inside the weed’s vascular system (inside stem), where they then take over the plant’s internal system and kill it from within.

How to use a selective weed killer for flower gardens

Step-by-step instructions 1. You can apply the weed killer on weeds and grasses that are actively growing, such as during the rainy season, or when they first sprout in spring. 2. If you do so, always wear protective clothing and safety equipment such as goggles, masks, and gloves to ward off any accidents that may occur while using your herbicide. 3. Be sure not to spray it on plants that you want to keep alive. 4. When spraying the area where your weeds grow, target only those weeds/grass without worrying about damaging other plants nearby since it’s a selective herbicide meant for killing these hard-to-eliminate weeds. 5. Use your hose to wash it down or use a watering can with the herbicide already mixed in solution for plants that you don’t want to kill. 6. Water your plants after spraying since this helps prevent any residual soapiness from the herbicide, which may damage the future growth of flowers and vegetables nearby your desired plants.

Benefits of using a selective weed killer for flower gardens

First, it is a better alternative to the manual removal of weeds. Second, it can kill more than just a few types of weed without affecting your nearby flowers and vegetables. Third, the herbicide is widely available at local garden centers near you. Forth, it’s easy to apply, Fifth, it works well, is safe to use, and can be reapplied as needed.


Selective Weed Killer for Flower Gardens: Our Recommendation


Ortho 0438580 Grass B Gon Garden Grass Killer

Ortho 0438580 Grass B Gon Garden Grass Killer

The Ortho 0438580 Grass B Gon Garden Grass Killer is the perfect selective weed killer for your flower garden has full of weeds. It has active ingredients of Fluazifop-P-Butyl that can help you kill existing weedy grasses such as Foxtails, Crabgrass, Bermudagrass, Goosegrass, Quack grass that can’t harm your flower landscape or ornamental plants. In Crabgrass, it takes a longer time to kill than the other herbicides; but after a few weeks, it seems to all be killed. It doesn’t require mixing another chemical; it’s ready to use and easy to apply.


Dismiss Turf Herbicide

Dismiss Turf Herbicide

Dismiss Turf Herbicide B is a professional selective weed killer for the rainy and sunny season. Control difficult weeds for as little as 24 to 48 hours. No other than weed killer on the market, the visible result can give you as little as Dismiss Turf Herbicide B from FMC Corporation. You can apply to the top of the flowers but most effectively spray directly toward the base of that flower where the grass is near. It has active ingredients of Sulfentrazone 39.6% that can control the growth of dandelion, puncture weed, chickweed, carpetweed, yellow nutsedge, bedstraw, and other weed pests. In the application for the container; 4 to 12 ounces per 20 to 175 gallons of water per acre. Otherwise, 0.5 to 4 gallons per 1,000 square feet.

Just note the direct application of Dismiss Turf Herbicide B to actively growing foliage can cause unacceptable injury to the desirable plant.


Gordons Ornamec Over The Top Grass Herbicide

Gordons Ornamec Over The Top Grass Herbicide

Gordons Ornamec Over-The-Top Grass Herbicide is a selective systemic weed killer that is an “over the top” application for shrubs, trees, landscapes bed, flower gardens, ground covers, wildflowers, and grower nursery fields. It has specialized liquid herbicide ingredients of Fluazifop-P-butyl 6.75% that can control unwanted annual grasses and perennial grasses. Such as crabgrass, goosegrass, foxtail, sandbur, barnyard grass, Bermuda grass, quack grass, torpedo grass, and Johnson grass. It can use on and around newly emerging ornamentals as well as transplants.

 Just note the direction of Gordons Ornamec Over-The-Top Grass Herbicide does not apply in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. And always add a nonionic surfactant that contains at least 75% surface wetting agent at 0.25% volume of finished spray.


Scotts Halts Crabgrass & Grassy Weed Preventer

Scotts Halts Crabgrass & Grassy Weed Preventer

If you have already established a flower garden that won’t kill or harm them, Scotts Halts Crabgrass & Grassy Weed Preventer can target pre-emergent weeds. It has a different selective weed killer other than weed killer in the market. It can prevent seed germination and is an active ingredient of Pendimethalin. Pendimethalin is an herbicide of the dinitroaniline class used in applications to control annual grasses and certain broadleaf weeds. With this selective weed killer and preventer, you can’t plant any ornamental plants in 4 months because the soil will prevent the growth of the grass.

Many gardeners choose this on the market it indicates effectiveness and fast weed killer all years in their garden. The feature is you can apply this in the spring season; it won’t affect the product performance due to the cold or raindrops. Each bag of this product can cover 5,000 square feet up to 10,000 square feet of your garden.

 For your other information about this product, you read the instruction carefully, and not applicable in any lawn type.


Gordon’s Ornamec 170 Grass Herbicide

Gordon's Ornamec 170 Grass Herbicide

Another useful option of selective weed and grass killer by Gordon’s is the Ornamec® 170 Grass Herbicide. It’s a selective herbicide that can maintain the weed and grass over your flower garden, trees, landscape beds, ground covers, and other ornamental plants. With the active ingredients of Fluazifop-P-butyl 1.7%, it can help to control unwanted weeds and grass such as Barnyard grass, Bermuda grass, Crabgrass (large & smooth), Foxtail, Goosegrass, Wild oats, Witch grass, and more.

 Ornamec® 170 Grass herbicide is an “Over-the-top” application that can define as a spray pattern delivered to the upper portion of the target weeds and grass. The application can reduce the risk of flower injury; it surely fasts at effective action. In the application of plants that provide food, do not apply if they’re near to harvest.

In coverage of application per square feet for annual and perennial grass species, 6-9 fl. oz. of Ornamec® 170 Grass herbicide can spray 1000 square feet of your flower garden. Mix the Ornamec® 170 Grass herbicide with water according to the amounts shown in the table below: For safety storage and disposal of Ornamec® 170 Grass herbicide, you must store in the original container only and keep it closed when not in use. In case of spill or leaking of chemicals in your surroundings. Don’t put near to food or feeds.


Fusilade II Turf and Ornamental Herbicide

Fusilade II Turf and Ornamental Herbicide

Fusilade II Herbicide is a selective post-emergent weed killer that can control many annual and perennial grass weeds in landscapes, flower gardens, trees, nurseries, parks, sports fields, golf courses, and ornamental plants. A fast and effective weed killer that can stand up to rain within 1 hour. It can be a washout, but the smell of the chemical will remain in the grass weeds. Also, it can use to remove Bermuda grass from tall fescue and zoysiagrass. The application of Fusilade II Herbicide is also “over-the-top” that can apply as a spot treatment without damaging the flowers or ornamentals plants because of active ingredients of Fluazifop-P-butyl 24.5%.

In using the Fusilade II Herbicide for the flower gardendo not apply this product in a way that will contact workers or other persons, either directly or through drift. Only protected handlers may be in the area during application. Thorough coverage of all weed plant foliage is good activity. You can see the achievement of weed control when the young active growing weeds are treated already under stress from moisture, temperature, low soil fertility, mechanical, or chemical injury. Apply 16-24 fl oz/A (0.4 – 0.6 fl oz/1,000 sq ft) of Fusilade II Turf and Ornamental Herbicide in sufficient water along with 0.25% (1/2 pt/25 gal) of a nonionic surfactant. Here’s the spray mixing direction below: 

Spray Mixing Direction with Nonionic Surfactant

Spray VolumeFusilade II Turf and Ornamental HerbicideNonionic Surfactant
1 Gallon
0.75 Fluid Ounce½ Fluid Ounce
10 Gallon6.5 Fluid Ounce3 Fluid Ounce
25 Gallon1 Pint½ Pint
50 Gallon10 Liquid Quart1 Pint

Turf & Ornamental Weed and Grass Stopper

Turf & Ornamental Weed and Grass Stopper

This selective weed killer from Hi-Yield is different from the other weed killers in the market. It has different active ingredients of Dithiopyr – 0.125% that can inhibit root growth of susceptible weeds as well as turfgrass and thus should be used only on established turf with a well-developed root system. The Hi-Yield Weed and Grass Stopper with Dimension Herbicide can use in landscapes, flower gardens, lawns, and turf. This product provides pre-emergence control of crabgrass and control or suppression of weeds when applied before their germination. Besides, this product provides post-emergence control of seedling crabgrass after germination and emergence. Post-emergence controls are limited to crabgrass only but is effective up to 4 weeks after crabgrass has germinated. It generally corresponds to the time when crabgrass seedlings first become visible in the established turfgrass. Do not apply this product later than four weeks after crabgrass germination.

Most of the selective weed killer is mixed in the water that sprays directly in ornamental landscapes or flower gardens. But the Hi-Yield Weed and Grass Stopper with Dimension Herbicide is a granular herbicide that you can apply by using a drop or rotary spreader. In applying for a flower garden, you can spread it manually using PPE equipment for your safety from chemicals. In the application of the product, spread it to the bare ground and mulched areas in your flower garden. Also, don’t allow people or pets to enter the treated area until the dust has settled.


Agrisel Grass Out Max Liquid Herbicide

Agrisel Grass Out Max Liquid Herbicide

Another selective weed or grass killer focused on flower gardens, shrubs, broadleaves crops, and other broadleaves plants that can control many weeds or grass around. It cants affect or injure your flowers, broadleaves crops, and plants. It is the Agrisel Grass Out Max Liquid Herbicide that has active ingredients of Clethodim 26.4%. There is two application process in this product, air application, and ground application. The air application is you can spray over the top of your flower garden. Use a minimum of 5 gallons and a maximum of 40 gallons of spray solution per acre. The use of sufficient spray volumes and pressure is essential to ensure complete coverage. Otherwise, the ground application is you can spray directly near into the grass in your flower garden. Use a minimum of 3 gallons of spray solution per acre. As grass or crop foliage becomes dense, increase spray volume up to 10 gallons. Just note for additional information: Crop injury may occur when Agrisel Grass Out Max Liquid Herbicide is applied to onions, garlic, or shallots with aerial equipment.


Conclusion

Selective weed killers are a great option for flower gardens because they kill the weeds but leave your flowers and other plants untouched. This type of product is ideal if you’re looking to maintain a garden without having to do much weeding, or if you simply don’t want any chemicals left behind in your yard. The best selective weed killer will be able to get rid of even the toughest types of weeds while still being safe for children and pets who might come into contact with it. These products also won’t affect the soil quality which means that there should be no long-term negative effects on plant growth after applying them once or twice each year. As such, these herbicides can save time and money by making gardening easier while ensuring that plants don’t die over time from being poisoned.

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