About this item
Highlights
- Blocks weeds for three months, guaranteed.
- Safe for use around over 200 established flowers, vegetables, trees and shrubs as listed on the label
- Prevents new weeds from sprouting, eliminating hand-weeding
- Easy to use, flip-top shaker cap
- Apply anytime spring, summer or fall. Reapply again after three months for continued weed prevention.
- Covers 900 sq. ft.
- NOT for use on lawns.
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Q: Can this be used in a landscape that has small rocks? Will it permeate through?
A: Preen Garden Weed Preventer can be used in a rock, gravel, brick, or stone bed, around plants are listed as recommended on the label. Weeds must be removed first before application. Water in the Preen within three days of application. Note that this product may cause a yellow/brown/gray stain discoloration on the rock, gravel, or stone. We suggest they consider testing a small area first. Over time, sunlight may help to lighten the stain. Always read and follow label directions. Thank you!
submitted byPreen Customer Support - 1 year agoBrand expert
Q: Can you use it in existing ground cover and it will not harm the ground cover. Just the weeds
A: Thank you for your inquiry! Preen can be applied around a ground cover once it is fully established. Meaning the ground cover has fully grown/spread everywhere that you want it to. If you are wanting the ground cover to continue to spread then we would advise not to apply the Preen. Thank you, Customer Service
submitted byPreen Customer Support - 1 month agoBrand expert
Q: Can I use this product to kill weeds and grass?
A: Preen Garden Weed Preventer prevents weed seeds listed on the label from germinating. This product will not kill actively growing weeds or grass. Thank you!
submitted byPreen Customer Support - 5 months agoBrand expert
Q: Is Preen safe for pets?
A: Pets may enter a Preen treated area once it has dried from the first initial rain/watering. The granules will not dissolve right away so if you do not want them to be visible, gently rake in and then water the Preen in.
submitted byPreen Customer Support - 1 year agoBrand expert
Q: Is this also used for lawns
A: Hello! Preen Garden Weed Preventer cannot be used in lawns. Our Preen Lawn Crabgrass Control would be best for you. It will help prevent crabgrass but also other broadleaf weeds.
submitted byPreen Customer Support - 1 year agoBrand expert
Q: Need a weed killer that can be mixed with water so it can soak into ground.back yard use.
A: Thank you for your inquiry! We currently do not produce any products that can be mixed with water to soak into the ground
submitted byPreen Customer Support - 5 years agoBrand expert
Q: My garden patch was not worked last yr. so is covered in grass and weeds this yr. Is there a weed and grass killer that I can use now and still be able to plant tomatoes and cucumbers?
A: Thank you for your inquiry! Currently we do not have any products that will work to kill/control grass and would be safe to plant tomato plants and vegetables. We would recommend contacting your Local County Cooperative Extension (which is a local college) or reputable garden center for products that will work to kill/control grass and would be safe for use where you will be planting vegetables.
submitted byPreen Customer Support - 5 years agoBrand expert
Q: I have rock in all of my beds, will this work if it is applied on top of the rocks.
A: Preen Garden Weed Preventer may be applied as directed on top of a dry weed free landscape rock area (reapply every 9 - 12 weeks for continued label listed weed seed prevention and be sure to water after application): Caution in that this product may stain porous surfaces such as rock a yellowish/brownish/grayish color; Do not apply if this is not acceptable to you. Thank you!
submitted byPreen Customer Support - 5 years agoBrand expert
Q: Will this product work on my sand beach?
A: Thank you for your inquiry! It is not recommended to be applied to a sand beach as the invisible barrier the product creates could easily be disturbed. Also this product is not safe to be applied near any water source. None of our Preen products can safely be used around or near streams, lakes, rivers, oceans, pools, etc. You can only apply Preen as long as the area is 300+ feet away from the water. Heavy rains can wash the product right into the water source and we wouldn't want to harm the fish as Preen is highly toxic to aquatic life.
submitted byPreen Customer Support - 6 years agoBrand expert
Q: What are the ingredients?
A: Thank you for your inquiry! The active ingredient in Preen Garden Weed Preventer is Trifluralin.
submitted byPreen Customer Support - 6 years agoBrand expert
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Guests are saying
Preen can't be shipped
Great product

Preen
Love Preen

Wasted money

1 reply from CSR team - 2 years ago
Excellent Weed Preventer

Destroys weed seed bank!

Worth the money, so far!

Not impressed

1 reply from Csr team - 4 years ago
Absolutely worthless

1 reply from csr team - 4 years ago
Weed be gone!!!
(no review title)
(no review title)
Great job except this year!

1 reply from CS team - 5 years ago
Huge disappointment

1 reply from CS team - 5 years ago
Used Preen for 20+Yrs.

Waste of my money

1 reply from customer service team - 6 years ago
Worked great! Just as it said it would.
