Preen weed preventer typically costs $18-$75 per bag, with common garden formulas running about $0.02-$0.04 per square foot when bought in a size suited to the area. The best price depends on the specific formula, package size, coverage, store promotions, and whether delivery is included; Preen prevents many weed seeds from sprouting but does not kill established weeds.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Preen Garden Weed Preventer, 5.6 lb | $18 | $22 | $27 | Usually covers about 1,000 sq ft |
| Preen Garden Weed Preventer, 13 lb | $30 | $36 | $43 | Usually covers about 2,300 sq ft |
| Preen Garden Weed Preventer, 31.3 lb | $55 | $65 | $78 | Usually covers about 5,000 sq ft |
| Preen Extended Control or specialty formula | $25 | $34 | $48 | Price and coverage vary by product |
Price estimates reflect typical U.S. retail listings before tax; product labels and package coverage can change.
What Preen costs for common garden sizes
For a typical garden, the 13-pound bag often offers the practical balance of purchase price and coverage. A 5.6-pound bag generally costs $18-$27 and treats about 1,000 square feet, or roughly $0.018-$0.027 per square foot. A 13-pound bag is commonly $30-$43 for about 2,300 square feet, equal to approximately $0.013-$0.019 per square foot.
The large 31.3-pound bag usually costs $55-$78 and covers around 5,000 square feet, for about $0.011-$0.016 per square foot. These estimates assume a standard Preen Garden Weed Preventer product and the label’s stated application rate. Actual coverage depends on the formula and how evenly it is spread; the package label is the final authority.
For example, a 600-square-foot flower bed may use less than one small bag, but the remaining product only saves money if it can be stored dry and used before its stated shelf-life guidance. A 2,000-square-foot planting area may make the 13-pound package more economical than buying two small bags.
Specialty products, such as extended-control or products combined with fertilizer, may cost more per bag and have different coverage. Compare the listed treated area rather than package weight alone. A heavier bag is not automatically a better value if its formulation or application rate differs.
How granules, labor, and delivery shape the quote
The product itself is usually the main expense for a do-it-yourself application, while hired labor and delivery can change the total substantially. The table separates typical costs for a basic residential application. Rates are broad estimates, not fixed national charges.
| Cost component | Low | Average | High | What changes the charge |
|---|---|---|---|---|
| Preen granules | $0.011 per sq ft | $0.016 per sq ft | $0.027 per sq ft | Formula, package size, and coverage |
| Spreader purchase or rental | $0 | $10-$25 | $45 | Handheld, push, rental, or existing equipment |
| Professional application labor | $45 | $75-$125 | $180 | Minimum service fee, bed access, and site size |
| Delivery | $0 | $6-$15 | $25 | Retailer, order total, and delivery distance |
| Bed cleanup or weed removal | $25 | $50-$100 | $200 | Existing weeds, debris, and time required |
Professional services may impose a minimum visit charge even when a small bed takes little time. Labor estimates can be expressed as ; for instance, 1.5 hours at $60-$90 per hour equals $90-$135 before any minimum fee or cleanup charge.
Preen is generally applied to prepared soil or mulch according to its label, so removing visible weeds and debris may be a separate task. Do not assume a landscaper’s weed-control visit includes Preen: ask whether the quote includes the product, application, watering if required by the label, and any cleanup.
Why coverage, formula, and bed size change the price
Compare cost per treated square foot, because package size alone can mislead. A 5.6-pound package at $24 costs about $0.024 per square foot if it covers 1,000 square feet. A 31.3-pound bag at $66 costs about $0.013 per square foot at 5,000 square feet. The larger bag saves roughly $11 per 1,000 square feet at those example prices, but only if the entire amount will be used.
Formula is another major variable. Standard garden preventer, extended-control products, and versions intended for specific planting situations may have different active ingredients, application rates, duration claims, and plant restrictions. Specialty packaging can run $5-$20 more than a comparable standard product. Verify that the exact product label permits use around the plants and in the bed where it will be applied.
Coverage can also vary by package and formulation. A product labeled for about 1,000 square feet may not cover that area if it is spread more heavily than directed. Conversely, applying too little may reduce performance. Use the label rate rather than adjusting the amount to stretch a bag or compensate for heavy weed pressure.
Bed shape and access affect hired application costs. A simple open 1,000-square-foot bed is quicker than several narrow beds divided by fences or landscaping. Multiple small areas may add 20%-50% to labor compared with one accessible area of the same total size, especially when a crew must move equipment between locations.
When does the 31-pound bag beat smaller Preen packages?
The large bag is usually the lowest-cost choice per square foot when the garden can use it and storage is practical. At typical prices, the 31.3-pound package costs about $55-$78, versus $30-$43 for 13 pounds. Based on stated coverage, the large size may save around 10%-35% per treated square foot compared with smaller packaging.
For 1,000 square feet, one small bag is often the simplest purchase and may cost $18-$27. For about 2,300 square feet, one 13-pound bag generally costs $30-$43; buying three small bags could cost $54-$81 and leave excess product. For roughly 5,000 square feet, a large bag at $55-$78 is usually less expensive than buying enough small packages to reach the same area.
Check the retailer’s price per pound and, more importantly, the price per labeled square foot. Some online listings have a lower item price but add shipping, while local stores may offer a coupon or seasonal sale. A delivery charge of $10 can erase the savings on a small bag but matters less on a larger order.
Buy only what can be stored safely and used as directed. Keep the package closed and dry, away from children and pets, and follow the product label for storage and handling. If only a small bed needs treatment, the lowest unit price can still result in unnecessary spending on unused product.
How U.S. store prices and delivery alter the deal
Retailer promotions and shipping often matter more than broad regional differences for a widely distributed bagged product. Local shelf prices can vary by roughly 5%-15% between markets, while a sale, coupon, or retailer-specific promotion may reduce the register price by 10%-25%. These percentages are approximate and depend on the product and week.
Urban and suburban shoppers may have more nearby stores to compare, while rural buyers may face longer trips or fewer pickup options. Online prices can be competitive, but bulky bags may carry delivery charges of $6-$25 or require a minimum order. Compare the final checkout total, including shipping and sales tax, rather than the product listing alone.
Prices may rise during spring demand, when gardeners are preparing beds and retailers promote weed-control products. A 5%-15% seasonal difference is possible, although clearance offers or store coupons can reverse the pattern. Buying ahead can help only if the product is stored according to label directions and the purchase is not larger than the planned use.
For a fair comparison, match the exact formula and package size across stores. A product with a similar brand name may have a different active ingredient or coverage. Compare price per 1,000 square feet and account for any rewards, delivery, or pickup fees that apply to the actual order.
What application time and preparation add to the budget
A straightforward DIY job often takes less than an hour, while preparation can take longer than spreading the granules. Spreading product across 1,000 square feet may take 15-30 minutes with a suitable spreader, plus time to clear the bed and follow label instructions. A complex area or several separate beds can take 45-90 minutes.
For a hired visit, a small-job minimum of about $45-$90 is common in some markets, even if the product is inexpensive. Larger or more complicated work may be billed at roughly $45-$90 per labor hour, with total labor of $75-$180 for a modest application. Ask whether the contractor charges by the bed, square footage, or visit.
Remove existing weeds before applying a pre-emergent product; it is not a substitute for killing mature weeds. Hand-pulling may cost nothing beyond time, while hired cleanup can add $25-$200 depending on weed density and debris. Follow label directions about timing, watering, planting restrictions, and any required protective measures.
Watering requirements are product-specific. If the label calls for watering after application, include that step in the plan and avoid applying before heavy rain if the label warns against it. Do not apply near seeds or newly planted vegetation unless the specific label allows it, since some uses can interfere with germination.
Preen compared with mulch and hand weeding
Preen can reduce some recurring weed emergence, but it is not always the least expensive approach for every bed. A standard bag may cost about $0.011-$0.027 per square foot per application. If the label calls for reapplication during the season, the annual product budget can roughly double for the treated area, so check the particular product’s directions and duration.
Mulch commonly costs about $35-$75 per cubic yard before delivery and labor. A cubic yard spread 2-3 inches deep covers approximately 100-160 square feet, making material costs around $0.22-$0.75 per square foot, with installation extra. Mulch has other uses, including covering soil and improving bed appearance, but it generally costs more per initial square foot than a single Preen application.
Hand weeding has little material cost but can require 30-90 minutes per 1,000 square feet depending on weed growth and soil conditions. At an assumed value of $20-$35 per hour for personal time, that is roughly $10-$53 in time per visit. Hiring a gardener can cost more, often $45-$90 per hour or a minimum service fee.
These options are not interchangeable in every situation. Preen works as a preventive treatment for listed weeds under the product’s directions; mulch blocks light and helps cover bare soil; hand removal deals with existing weeds. A combined approach may be appropriate, but check the label before using Preen with new seed, edible plantings, or particular mulch and planting conditions.
Ways to lower the Preen bill without overapplying
The most reliable savings come from matching package size to treated area and avoiding unnecessary service charges. Measure beds before shopping, then compare the labeled coverage and price per 1,000 square feet. If the area is near 2,300 square feet, one 13-pound bag may be less wasteful than several small ones; if it is near 5,000 square feet, compare the large bag against multiple smaller packages.
Check local store pickup, retailer coupons, and seasonal discounts before paying for delivery. Combining a Preen purchase with other planned garden supplies may meet a free-shipping threshold, but buying unused product solely to qualify can cost more. Compare the checkout total across equivalent formulas, not just advertised sale prices.
Prepare the bed yourself by clearing weeds and loose debris if the service quote includes cleanup. Request an itemized estimate showing product, application labor, travel or minimum charge, and any separate weed removal. For a small area, DIY application may avoid a $45-$90 minimum visit; for a large or difficult site, compare the contractor’s full price with equipment and time needed for self-application.
Use the amount and schedule specified on the label rather than applying extra product in hopes of extending control. Do not pay for a premium formula unless its listed features address the specific site need. Confirm plant compatibility and timing before purchase, since choosing an unsuitable product can mean the cost of another treatment or replacement plants.
Questions that change a Preen price comparison
The best deal is the lowest total cost for the correct product and coverage, not simply the cheapest bag. Before purchasing, verify the exact product name, package weight, treated area, and intended use. Product lines can differ, and a price comparison is unreliable if one listing covers a different area or has different application instructions.
How much Preen is needed for 1,000 square feet?
A standard 5.6-pound Garden Weed Preventer package is commonly labeled to cover about 1,000 square feet, but coverage varies by product. Follow the package directions and do not assume that other Preen formulas use the same rate.
Is the largest package always the best value?
It often has a lower price per treated square foot, but not if much of the product remains unused or storage is unsuitable. Compare package coverage, final price, and expected use before choosing a size.
Does Preen kill weeds that are already growing?
Preen weed preventer is intended to stop listed weed seeds from germinating; it generally does not kill established weeds. Remove existing weeds using an appropriate method before application, and check the label for the product’s specific uses and limitations.
What should a landscaper’s quote include?
Ask whether the quote includes the Preen product, preparation, application, travel, minimum visit fee, and any watering or cleanup required by the label. A written breakdown makes a $75-$180 service estimate easier to compare with another provider or a DIY purchase.