Managing self-seeding flowers can be a challenge, especially when you want to control weeds without harming your desirable plants. After evaluating various options, I find that The Andersons Barricade stands out for large-area prevention, Preen Garden Weed Preventer offers long-lasting coverage around established plants, and Miracle-Gro Shake ‘N Feed combines feeding with weed prevention for more versatile gardeners. Each product presents tradeoffs: some excel at broad coverage but lack in targeting specific weeds, while others may require more frequent reapplications or aren’t suitable for all garden types.
Key Takeaways
- Pre-emergent herbicides like Andersons Barricade excel at large-area weed prevention but don’t kill existing weeds.
- The Preen Garden Weed Preventer offers long-lasting control and is safe around established plants, though it needs reapplication every 3 months.
- Miracle-Gro Shake ‘N Feed combines plant feeding with weed prevention, making it suitable for gardeners seeking multi-purpose products.
- Fast-acting sprays like Ortho Weed & Grass Killer are effective for spot treatment but aren’t suitable for broad lawn or garden use.
- Tradeoffs include reapplication frequency, suitability for specific plantings, and whether the product targets existing weeds or prevents future growth.
| The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control – Covers up to 5,800 sq ft (18 lb) |  | Best for Large-Scale Prevention | Coverage Area: 5,800 sq ft | Weight: 18 lb | Active Ingredient: Prodiamine 0.48% | VIEW LATEST PRICE | See Our Full Breakdown |
| Miracle-Gro Shake ‘N Feed All Purpose Plant Food + Weed Preventer, 4.5 lb |  | Best for Versatile Gardeners | Weight: 4.5 lb | Prevents: Crabgrass, chickweed, purslane, foxtail, pigweed, others | Coverage: 135 sq. ft | VIEW LATEST PRICE | See Our Full Breakdown |
| Ortho GroundClear Weed & Grass Killer with Comfort Wand, 1 gal. |  | Best for Spot Treatment | Volume: 1 gallon | Application: Ready-to-use spray | Rainproof Time: 2 hours | VIEW LATEST PRICE | See Our Full Breakdown |
| Preen Garden Weed Preventer 16 lb. Drum, Covers 2,560 sq. ft. |  | Best for Continuous, Established Plantings | Coverage: 2,560 sq ft | Weight: 16 lb | Application: Apply and water thoroughly | VIEW LATEST PRICE | See Our Full Breakdown |
| self-seeding flower control product | Weight | Application | Coverage |
|---|---|---|---|
| The Andersons Barricade Profes | 18 lb | — | — |
| Miracle-Gro Shake ‘N Feed All | 4.5 lb | Sprinkle, rake, water | 135 sq. ft |
| Ortho GroundClear Weed & Grass | — | Ready-to-use spray | — |
| Preen Garden Weed Preventer 16 | 16 lb | Apply and water thoroughly | 2,560 sq ft |
More Details on Our Top Picks
The Andersons Barricade Professional-Grade Granular Pre-Emergent Weed Control – Covers up to 5,800 sq ft (18 lb)
This product is ideal for gardeners needing to cover large areas with effective weed prevention. Its use of prodiamine provides reliable control of grassy and broadleaf weeds like crabgrass and poa annua. Compared with liquid options, its granular form dissolves quickly with patented DG Technology, ensuring the soil absorbs the active ingredients rapidly. However, it cannot eliminate existing weeds and requires early application in spring and fall for best results. It’s best suited for landscape beds, large lawns, or areas where weed prevention is the primary goal.
Pros:- Effective at preventing a wide range of weeds
- Rapid soil absorption thanks to patented DG Technology
- Large coverage area for the size
Cons:- Does not kill existing weeds
- Requires early application for optimal results
Best for: Large gardens or landscape beds requiring broad weed prevention
Not ideal for: Controlling existing weeds or small garden beds
- Coverage Area:5,800 sq ft
- Weight:18 lb
- Active Ingredient:Prodiamine 0.48%
- Application Seasons:Spring and Fall
- Made in:USA
Our verdict“Best suited for gardeners needing broad, reliable weed prevention over large areas with minimal concern for existing weeds.”
Miracle-Gro Shake ‘N Feed All Purpose Plant Food + Weed Preventer, 4.5 lb
This product combines plant feeding with weed prevention, making it a flexible choice for gardeners who want to nourish their plants while keeping weeds at bay. It’s easy to apply—just sprinkle and water in—and provides up to 3 months of weed suppression. Compared with granular pre-emergents like Andersons Barricade, this product is better suited for garden beds with mixed plants, including vegetables and flowers. The main tradeoff is that it isn’t designed for lawn use, and reapplication is needed every few months, especially after heavy rain.
Pros:- Feeds plants and prevents weeds for up to 3 months
- Suitable for a variety of garden plants
- Easy to apply with a simple sprinkling method
Cons:- Not recommended for lawns or flower seeds
- Requires watering after application
- Cannot be used on wet foliage
Best for: Gardeners seeking a combined feeding and weed prevention solution for flower beds, vegetables, and shrubs
Not ideal for: Lawn weed control or new plantings requiring immediate weed removal
- Weight:4.5 lb
- Prevents:Crabgrass, chickweed, purslane, foxtail, pigweed, others
- Coverage:135 sq. ft
- Application:Sprinkle, rake, water
Our verdict“A solid choice for gardeners wanting an easy, multi-purpose product that nourishes and prevents weeds in established flower beds and vegetable gardens.”
Ortho GroundClear Weed & Grass Killer with Comfort Wand, 1 gal.
This fast-acting spray excels at spot-treating weeds in walkways, driveways, and landscape beds. It provides visible results within 15 minutes and is rainproof in 2 hours, making it perfect for quick cleanups. The ergonomic Comfort Wand simplifies precise application, reducing overspray. However, it’s not suitable for use on lawns or large garden beds, and it’s less effective on large, mature weeds. Its chemical formulation might not satisfy organic gardening advocates but is effective for targeted weed removal.
Pros:- Fast-acting results within 15 minutes
- Rainproof in just 2 hours
- Easy to apply with ergonomic Comfort Wand
Cons:- Not for use on lawns
- Effective only on small, actively growing weeds
- Contains chemicals that may not align with organic practices
Best for: Spot treatment of weeds in non-lawn areas requiring quick results
Not ideal for: Broad-area weed prevention or use on lawns
- Volume:1 gallon
- Application:Ready-to-use spray
- Rainproof Time:2 hours
- Organic Listing:OMRI Listed
Our verdict“Ideal for quick, targeted weed removal in pathways and beds, but not suited for regular or large-scale prevention.”
Preen Garden Weed Preventer 16 lb. Drum, Covers 2,560 sq. ft.
This granular pre-emergent herbicide offers up to 3 months of weed prevention, making it well-suited for gardeners with well-established beds. Its convenient scoop and rain-resistant formula simplify application, and it’s safe around over 200 types of plants, including vegetables, flowers, and shrubs. Compared with Andersons Barricade, Preen is more targeted at ongoing maintenance of established gardens, but it requires reapplication every 9-12 weeks. Granular form provides broad coverage but less precision than liquid sprays, and it’s not ideal for freshly planted areas.
Pros:- Provides up to 3 months of weed prevention
- Safe around a wide variety of established plants
- Easy to apply with included scoop and rain resistance
Cons:- Requires reapplication every 9-12 weeks
- Less precise than liquid options
- Not suitable for newly planted areas
Best for: Maintaining weed-free established flower beds and vegetable gardens
Not ideal for: New plantings or sensitive seedlings
- Coverage:2,560 sq ft
- Weight:16 lb
- Application:Apply and water thoroughly
- Reapplication Interval:Every 9-12 weeks
Our verdict“Best for ongoing weed control in established gardens, balancing ease of use with reliable long-term prevention.”
How We Picked
To select the best self-seeding flower control products, I focused on effectiveness in preventing weeds, ease of use, coverage area, and compatibility with garden plants. I compared products based on their active ingredients, application methods, longevity, and potential impacts on desirable plants. Products that balance broad coverage with ease of application and minimal harm to established flowers made the cut, while considering tradeoffs like reapplication frequency and suitability for organic gardening or specific garden conditions.
| self-seeding flower control product | Application |
|---|---|
| The Andersons Barricade Profes | — |
| Miracle-Gro Shake ‘N Feed All | Sprinkle, rake, water |
| Ortho GroundClear Weed & Grass | Ready-to-use spray |
| Preen Garden Weed Preventer 16 | Apply and water thoroughly |
Factors to Consider When Choosing Best Self-seeding Flower Control Products
Choosing the best product for controlling self-seeding flowers depends on your specific garden needs, maintenance style, and whether you prefer pre-emergent or spot treatment options. Consider the size of your garden, the type of weeds you face, and your approach to plant care. Pre-emergent products like Andersons Barricade and Preen are ideal for large areas or ongoing maintenance, while quick-acting sprays are better for targeted weed removal. Balancing these factors will help you select the most effective solution for your garden.Understanding Pre-Emergent Herbicides
Pre-emergent herbicides prevent weeds from germinating, making them perfect for gardeners who want to maintain a weed-free flower bed or landscape. These products are generally granular or liquid, with granular options offering broad coverage and ease of use around established plants. However, they cannot eliminate existing weeds, so timing and application are critical for success.
Spot Treatments for Quick Results
Spot treatments like Ortho Weed & Grass Killer provide rapid results, targeting specific weeds or grasses. They are best suited for areas where weeds are already present and require immediate removal. Keep in mind that these sprays are not designed for broad prevention and are less effective over large areas, especially in flower beds or vegetable gardens.
Application Strategies and Reapplication
Granular products like Preen and Andersons Barricade often need reapplication every few months, especially after heavy rain. Liquid sprays or spot treatments may require more frequent use but can be more precise. Always follow the manufacturer’s instructions regarding timing, reapplication, and compatibility with existing plants to avoid unintended damage.
Frequently Asked Questions
Can I use these products around my existing flowers?
Yes, many of these products, such as Preen Garden Weed Preventer, are formulated to be safe around established plants when used as directed. However, granular pre-emergents like Andersons Barricade are best applied before planting or around mature, non-sensitive plants, and you should avoid applying directly on delicate or newly transplanted flowers.
How often should I reapply weed preventers?
The frequency depends on the product. Granular options like Preen typically need reapplication every 9-12 weeks, especially after heavy rain. Liquid or spray products like Ortho Weed & Grass Killer are intended for spot treatments and do not require reapplication unless weeds reappear. Always check the label for specific reapplication intervals to maintain continuous control.
Are these products safe for organic gardening?
Most conventional pre-emergents and chemical sprays contain ingredients that may not meet organic standards, such as prodiamine or glyphosate. Organic gardeners should look for OMRI-listed products or manual weed control methods. The Ortho spray, for example, is not organic, but some granular products like Preen offer formulations that are safer around edible plants when used properly.
What is the best product for controlling existing weeds?
The Ortho GroundClear Weed & Grass Killer is designed for quick, visible results on existing weeds, making it the best choice for spot-treatment. Pre-emergent products like Andersons Barricade and Preen prevent weeds from germinating but do not kill existing weeds, so they are less suitable for immediate weed removal.
Will these products harm my lawn or vegetable garden?
Pre-emergent herbicides like Andersons Barricade and Preen are generally not recommended for lawns or vegetable beds, as they can inhibit seed germination of desirable plants. The Miracle-Gro Feed & Weed product is safe for established plants but not for seeding or new plantings. Always read labels carefully to ensure compatibility with your specific garden setup.
Conclusion
If you prioritize broad, long-term prevention over large areas, Andersons Barricade offers reliable coverage, especially for landscape beds and lawns. Gardeners focused on established beds and vegetable plots will find Preen Garden Weed Preventer a practical, safe choice. For quick, spot treatment of weeds in pathways or driveways, Ortho Weed & Grass Killer delivers fast results. Each option involves tradeoffs: granular products require reapplication, liquid sprays are more targeted but less broad, and some are not suitable for all garden types. Your choice should reflect your garden size, plant sensitivity, and whether you prefer prevention or immediate weed removal.
