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Model #2464092

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4.93 lbs. Extended Control Weed Preventer

  • Effectively prevents weed growth before it starts
  • One application lasts for up to 6 months and treats 805 sq. ft.
  • Perfect for use around trees and shrubs
  • See More Details

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Product Overview

Keep up your garden weed free and stop them before they get started with the Preen Extended Control garden weed preventer. Preen allows you to enjoy a beautiful, weed-free landscape. Application is easy and juse one keeps 125 broadleaf and grassy weeds from sprouting for up to 6 months. Weeds rob desirable plants of water and other nutrients. With the use of Preen, you save time on pulling weeds manually. Preen Extended Control garden weed preventer has a specialized formula to keep weed seeds from starting.
  • 1 Application blocks weeds up to 6 months guaranteed
  • When used as directed Preen Extended Control Weed Preventer can be used around more than 600 perennials, groundclovers, shrubs and trees as listed on the product label
  • Flip-top applicator cap makes it easy to apply
  • Not intended for use on flower seeds, lawns, vegetable gardens, water gardens or other food-producing or edible plants
  • Not available for sale in NY
  • Covers 805 sq. ft.

Info & Guides

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4.93 lbs. Extended Control Weed Preventer
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BrandPreenPreenPreenRoundup
Name5.625 lbs. Garden Weed Preventer4.93 lbs. Extended Control Weed Preventer10 lbs. Extended Control Weed PreventerMax Control 365 Continuous Spray Wand
Price
Ratings
(2069)
(536)
(536)
(2769)
Area of UseLandscape BedLandscape BedLandscape BedDriveway,Patio
Concentrated or Ready to UseReady to useReady to useReady to useReady to use
Application TypeGranularGranularGranularSpray
Weed TypeAnnual Bluegrass,Barnyardgrass,Broadleaf Signal Grass,Cheatgrass,Common Chickweed,Crabgrass,Florida Pusley,Foxtails,Goosegrass,Henbit,Knotweed,Lambsquarters,Pigweed,Puncture Vine,Russian Thistle,Sandbur,Stinging NettleAnnual Bluegrass,Annual Ryegrass,Barnyardgrass,Bitter Cress,Black Medic,Broadleaf Plantain,Broadleaf Signal Grass,Buckhorn Plantain,Bur Clover,Chamberbitter,Cheatgrass,Clover,Common Chickweed,Crabgrass,Dandelion,Dog Fennel,Field Bindweed,Florida Pusley,Foxtails,Goosegrass,Henbit,Horseweed,Knotweed,Lambsquarters,Mallow,Marestail,Morning Glory,Mouse-Ear Chickweed,Mullein,Mustard,Pennywort,Pigweed,Plantain,Pokeweed,Prostrate Spurge,Ragweed,Red Sorrel,Russian Thistle,Sandbur,Shepards Purse,Smartweed,Sow Thistle,Speedwell,Spotted Spurge,Spurge,Stinging Nettle,Wild Carrot,Wood SorrelAnnual Bluegrass,Annual Ryegrass,Barnyardgrass,Bitter Cress,Black Medic,Broadleaf Plantain,Broadleaf Signal Grass,Buckhorn Plantain,Bur Clover,Chamberbitter,Cheatgrass,Clover,Common Chickweed,Crabgrass,Dandelion,Dog Fennel,Field Bindweed,Florida Pusley,Foxtails,Goosegrass,Henbit,Horseweed,Knotweed,Lambsquarters,Mallow,Marestail,Morning Glory,Mouse-Ear Chickweed,Mullein,Mustard,Pennywort,Pigweed,Plantain,Pokeweed,Prostrate Spurge,Ragweed,Red Sorrel,Russian Thistle,Sandbur,Shepards Purse,Smartweed,Sow Thistle,Speedwell,Spotted Spurge,Spurge,Stinging Nettle,Wild Carrot,Wood SorrelAnnual Bluegrass,Annual Ryegrass,Bahia Grass,Beggarweed,Bermuda Grass,Bitter Cress,Broadleaf Signal Grass,Buffalograss,Carpetgrass,Chicory,Common Chickweed,Dandelion,False Dandelion,Green Kyllinga,Henbit,Horseweed,Indian Chickweed,Japanese Clover,Knapweed,Lambsquarters,Love Vine,Moneywort,Monkey Grass,Mouse-Ear Chickweed,Orchardgrass,Pennywort,Spurge,Tall Fescue,Wheatgrass,Wild Garlic,Zoysia Grass
Extended ControlExtended ControlExtended ControlExtended ControlExtended Control
OrganicNon-OrganicNon-OrganicNon-OrganicNon-Organic
Emergent TypePre-EmergentPre-EmergentPre-EmergentPre and Post Emergent
View ProductView ProductView ProductView Product

Specifications

Dimensions

Coverage Area (sq. ft)
805
Product Depth (in.)
4.75 in
Product Height (in.)
11.50 in
Product Width (in.)
8.50 in

Details

Application Method
When plants are dry, sprinkle on soil surface. Water to activate.
Application Type
Granular
Area of Use
Landscape Bed
Bag Weight (lb.)
4.93
Compatible Grass Type
Not for use on lawns
Concentrated or Ready to Use
Ready to use
Contact or systemic
Neither (Pre-emergent)
Container type
Bottle
Emergent Type
Pre-Emergent
Equivalent ready to use amount
805
Extended Control
Extended Control
Features
Controls Broad Leaf,Controls Crabgrass
Form
Granular
Indoor/Outdoor
Outdoor
Organic
Non-Organic
Pack Size
1
Primary Active Ingredient
trifluralin; isoxaben
Returnable
90-Day
Safe for Edibles
No
Weed Type
Annual Bluegrass,Annual Ryegrass,Barnyardgrass,Bitter Cress,Black Medic,Broadleaf Plantain,Broadleaf Signal Grass,Buckhorn Plantain,Bur Clover,Chamberbitter,Cheatgrass,Clover,Common Chickweed,Crabgrass,Dandelion,Dog Fennel,Field Bindweed,Florida Pusley,Foxtails,Goosegrass,Henbit,Horseweed,Knotweed,Lambsquarters,Mallow,Marestail,Morning Glory,Mouse-Ear Chickweed,Mullein,Mustard,Pennywort,Pigweed,Plantain,Pokeweed,Prostrate Spurge,Ragweed,Red Sorrel,Russian Thistle,Sandbur,Shepards Purse,Smartweed,Sow Thistle,Speedwell,Spotted Spurge,Spurge,Stinging Nettle,Wild Carrot,Wood Sorrel

Questions & Answers

48Questions16Answers

Does this product kill poison ivy and its roots?

Asked by Maryland April 9, 2021
0
Answers

Any harm in using this as a lawn weed pre-emergent in New Jersey? (Between zones 7 & 8)

Asked by PE March 21, 2021
1
Answer

Preen Extended Control Weed Preventer is only meant to be applied to soil in garden and landscape beds. This product is not to be applied to a lawn or where sowing of grass seed will occur. Thank you.

Does the ground need to be wet/moist prior to applying this product? I’m in Colorado. We’re expec...

Asked by Mary March 11, 2021
2
Answers

I was told to used this the day before rains are expected. this shakes on dry and the rains will allow this to seep down into the beds and through the rocks

Can I use preen on my flower bulbs

Asked by Gaga July 23, 2020
1
Answer

Thank you for your inquiry! Preen Garden Weed Preventer may be used around the flower bulbs that are listed on the label. If a bulb is not listed on the label then we do not recommend applying around them. You may view all our Preen labels on our website Preen.com

Is this safe to use around pets?

Asked by Judy July 12, 2020
2
Answers

Yep

Can I use this to stop bamboo from growing back?

Asked by bubbabamboo July 10, 2020
3
Answers

That is what I used it for. First the landscaper spent 2 days cutting away growth. I had a mixture of nasty weeds and such. laid down the black blocking cloth, covered that in rocks, more black cloth and shook the preen over this and covered in larger rocks. this was a ditch where I had the growth issues. She did this in February of this year. I am so thrilled not one little sign of new growth. i did just use this preen and will use again in July. So far so good. The cats are not bothered nor drawn to it,

Can the vegetables be poison to eat If accidentally applying this product on vegetable garden?

Asked by Mike June 9, 2020
2
Answers

when I asked my landscaper- who recommended this if it was harmful for my cats. she said no. her mother accidently shook it all over her gardens and grass. she has free roam chickens! she said nothing happened to them and they ate the veggies. she made her mother eat the veggies and eggs for a few days!

can this be applied near tulips or lilies? before these emerge from the ground or after? thank you

Asked by Hi May 28, 2020
2
Answers

Don’t have Lillie’s but I have a lot of succulents, fruits trees, etc, I have not had any problems around them.

Is it toxic? Active ingredient(s)?

Asked by Dave May 18, 2020
2
Answers

I am not an expert on this. However, you are sprinkling dry granules in your yard. Ask her doctor. My guess is it's pretty safe if she doesn't come very near the treated area, but you might want to avoid treating the area immediately next to your house or areas where she may spend time.

Does preen work on gravel frontyard? Will it leave permanent green stain on the gravel?

Asked by Firoz May 15, 2020
1
Answer

Thank you for your inquiry! Preen Extended Control will work on gravel. The stain will fade away with time and the weather elements.

4.93 lbs. Extended Control Weed Preventer - page 2

Customer Reviews

  • 4.3
    out of 371 reviews
  • 88% recommend this product
Filter by:
Showing 1-10 of 371 reviews
Works Great!! Saves Time and Labor!! I have been a fan of Preen for many years so when I found th...
Works Great!! Saves Time and Labor!! I have been a fan of Preen for many years so when I found this new 6-month extended control treatment about 7 months ago, I was very excited to try it. At that time, we were well into spring and I was being lazy because I hadn’t applied any Preen yet in our rock gardens. My spring weeds were terrible and I was spending a lot of time pulling 100’s of tiny weeds. I pulled all the weeds I could find and then I applied about 15 pounds of this new 6-month treatment in my approximately 2,000 square feet of river rock gardens and tree beds. I poured the Preen 6-month treatment granules into my old Preen dispenser container because it makes the granules easier to apply. Then I just shook out the granules where I wanted them and lightly watered them in. The results have been amazing with only a few new weeds popping up in all this time. So now, I’ve bought this new bag of 6-month Preen and I’m ready to apply it again for this coming season.
by Kitty
1 person found this helpful
This is an interesting concept - this is a germination preventer for weeds, but has no effect on ...
This is an interesting concept - this is a germination preventer for weeds, but has no effect on growing weeds. This does NOT go on lawns, anywhere you are growing food, nor anywhere you are thinking of planting in the next 12 months. So, this product came in handy for preventing weeds in my rock drainage fields, a rock garden where I didn't want anything growing, and rock filled flagstone footpaths. It is like a fine sand and I found using an old raspberry container made a good spreader for it.
by SFBill
2 people found this helpful
I would rate this as excellent, but I'm not sure yet if it truly will last 6 months or if will pr...
I would rate this as excellent, but I'm not sure yet if it truly will last 6 months or if will prevent most of our weeds problems. Because it's still winter here, I tested it on an indoor planter with weed seeds (dandelion, leafy spurge, thistle, and stinging nettle) that we keep for this very purpose. I planted them almost three weeks ago along with adding the Preen Weed Preventer. So far, as you can see in the photo, not a single weed has sprouted in spite of watering the soil daily and keeping it in the sun. This beats some others we have tried, so this may well be a keeper.
by Wolfbane
1 person found this helpful
I used this product in a bed with a lot of succulents. Weeds glow around the plants at all times ...
I used this product in a bed with a lot of succulents. Weeds glow around the plants at all times during the year. I removed all the weeds from the bed. I watered down the bed and pulled them out by the root so I hope once the Preen goes on it will prevent now ones from growing. I noticed some reviews stated it didn't work but I was thinking its because it's not a week killer is a week preventer so you have to clear all the weeds out before you spread it. Instructions say to spread it in the area then wet it down. I have it in a large bag so I used a cup to spread it but may have had a heavy hand in some areas and don't do it when the wind is blowing or if you do spread it close to the ground. It has been down a few days and I don't see any new growth yet. So far so good. I will wait for a few weeks to and try to update this review. Directions state to use in spring then re apply 3 months later.
by homedeposhopper
I have been very happy with the performance of Preen's extended control weed preventer. I used i...
I have been very happy with the performance of Preen's extended control weed preventer. I used it last spring and summer for the first time and it did an excellent job of preventing weeds from growing in our flower beds for several months. About mid-summer I did a second application of Preen that carried us through to October and kept our flower beds looking great. In preparation for the upcoming 2020 growing season I ordered this 21.45 lbs. bag which should suffice for the entire growing season in keeping our flower beds weed free. Well done Preen!
by EleEng
I bought a small bag of Preen last year to see if it actually works. I applied it to the front ga...
I bought a small bag of Preen last year to see if it actually works. I applied it to the front garden where the weeds tend to go crazy and require constant effort to keep in check. The plants are too close together for weed killer, especially at the borders where the lawn allows for weeds to seed and creep over into the flowers. I went away on a long trip and came back three months later. The garden looked pristine! Preen had done a better job on its own than I could do with weekly efforts chasing down weeds. I got this larger bag this year. My garden area is enormous, about 1/3 of my lot, so I need help! The grains look like cornmeal, so they are easy to spot as you apply them to soil. It was very easy to apply just the right amount using a trowel and sprinkling it over the area. Of special note is the plant I took pictures of. It's a low spreading plant that will root if allowed to touch the soil. The problem is that weed seeds fall between the fronds and root under there, as well. The pictures show the removal of existing weeds around and under this plant (this product is not a weed killer; it prevents weeds from sprouting, so you have to remove existing things you don't want before application). You can see that you need very little for the product to work. I thought I would use the entire bag and possibly not cover all the garden areas, but I actually had a quarter or more of the bag left over. I've put this on my calendar to remind me to reapply in six months. It's the most effective product I've found, and is especially useful in areas like mine, where the growing season is nearly year-round. Now I can spend more time on the fun parts of gardening rather than weeding!
by Laine
1 person found this helpful
Time will tell how well this product suppresses the weeds. But if it works as well as the product...
Time will tell how well this product suppresses the weeds. But if it works as well as the product claims, I can have my summers back since I won't be spending it on my knees pulling weeds. I plan to sprinkle this in my front and side plots over mulch. The idea is use this product in early spring to keep the weeds from sprouting. There's a dispenser you can purchase and this bag as a refill.
by greg968
This is NOT a weed killer, it is a weed PREVENTER. It keeps weed seeds from germinating so it's ...
This is NOT a weed killer, it is a weed PREVENTER. It keeps weed seeds from germinating so it's safe to use around established plants without damaging them, although I'd still keep it away from edibles. Application is easy. I use an old PREEN shaker can (Reduce, Reuse, Recycle, right?), but you can also use a handheld broadcast spreader or wheeled drop spreader. Just follow the directions for application. I can't say this prevents ALL weeds from sprouting, but I do notice a significant reduction in the number of new weeds with regular application. Spot treatment with weed killer is still occasionally needed, but no where near as frequently or extensively as without using PREEN.
by DIYguy
1 person found this helpful
This weed prevent product has NEVER let me down. I’ve been using Preen for years and its possible...
This weed prevent product has NEVER let me down. I’ve been using Preen for years and its possible the best product on the market. I apply this in early spring when I do my mulching before any of the weed seeds that blew in over the winter start to sprout. Then I generally apply it again in mid August (it’s just my over cautiousness applying again in August and it always takes care of me for the entire growing season. I highly recommend this product.
by Marct611
1 person found this helpful
I have been using Preen Weed Control for several years now and am very happy with the results. I learned in the first couple years to pull those pesky weeds that start coming up as early as February here in Michigan. Once I started doing that I cut the weeds in my flower beds by at least 98%. If you spread the Preen before the seeds germinate it works well. Remember if your planting flowers from seed such as Zinnias make sure you don’t put any Preen in that area as it may not allow those seeds to germinate. Already established flowers should be fine, but just as a precaution I generally don’t put the Preen within 6” of them. I always put the Preen down before I mulch. This year I decided to try the Preen Extended Control that has a 6 month guarantee which here in Michigan means one application. From past use I can recommend this product. It works!
by CAROL
1 person found this helpful
Showing 1-10 of 371 reviews