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Sucker-Stopper RTU is used to prevent suckers and water sprouts on apples, pears, olives, non-bearing citrus and woody ornamental plants. Sucker Stopper RTU controls sprouting from pruning cuts, trunks and root stocks. Sucker-Stopper RTU is a ready to use formulation that will last at least three months after the application.
Product Documents
| Active Ingredient | Ethyl 1-naphthaleneacetate 1.15% |
|---|---|
| Target pests | Sucker-Stopper RTU is used to prevent suckers and water sprouts on apples, pears, olives, non-bearing citrus and woody ornamental plants |
| For use in | Interior plantscapes, ornamental gardens or lawns and grounds |
| Application | * See label for complete application instructions |
| Pet safe | Yes, if used as directed on label |
| NOT FOR SALE TO | |
| Shipping Weight | 1.20 lbs |
| Manufacturer | Monterey Lawn & Garden (Mfg. Number: LG 4300) |
| UPC | 022179103924 |
| EPA Registration | 5481-460-54705 |
What is Sucker-Stopper RTU?
Sucker-Stopper RTU is made from the plant growth regulator napthaleneacetate (NAA). This product is widely used in commercial agriculture to prevent suckers and as a thinning agent on fruit trees.
What is Sucker-Stopper RTU used for?
Sucker-Stopper RTU is used to prevent suckers and water sprouts on apples, pears, olives, non-bearing citrus and woody ornamental plants.
Why should I spray my tree?
Many trees produce suckers every spring. Even though you cut them back, the suckers will continue to come back all summer long, which can be very annoying. One application of Sucker-Stopper RTU can prevent this recurrence. Also, after pruning, many trees will put out suckers around the pruning wound. These are very hard to keep under control. One application of Sucker-Stopper RTU after pruning will prevent this. Thoroughly cover the primary wound or where the existing sprouts have been removed. Be sure to treat before new growth suckers are 10 inches in length. The earlier you treat, the better. Control should last about 3 months.
What precautions should I use with Sucker-Stopper RTU?
On bearing trees (apples, pears, olives), do not apply during bloom or fruit set because fruit set reduction may occur. On woody ornamentals, this is not a problem. Do not apply the spray to buds or foliage or injury may occur. Simply apply to the area around the primary wound or to the root suckering area. Be sure to apply before new suckers are 10 inches in length. For additional information see the supplemental label.
What type of packaging does Sucker-Stopper RTU come in?
Sucker Stopper RTU is sold in a 16 ounce, ready to use spray bottle.
Apply Sucker Stopper RTU on (not limited to):
| American Elm Apple Carob Chinese Elm Coast Redwood Crabapples Flowering Plum Olive Pear |
Pyracantha Red Maple River Birch Silver Maple Sugar Maple Sycamore Water oak Wax Myrtle Willow |
Faulty Spray Bottle
By Alan on 05/09/2013
Verified Purchase
Sprayer clogs
By Norm on 08/14/2016
Bad sprayer on mine too
By Rick on 04/14/2016
Really works
By Parrotmommie on 12/01/2018
My oak tree started sprouting roots that would make their way to the surface in my flowerbed under the tree. Pulling and cutting did not prevent them from growing. This product really works, just spray a little on the newly cut sprout at ground level or a little below ground.
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13 of 13 people found this review helpful
Tiny trees in my lawn be gone!
By Kathy on 07/01/2022
How do I apply the Sucker Stopper to shoots that have come up around the base of the tree? Do I prune and spray, or just spray the shoots without cutting down? Once treated do they wither away, or will I need to cut down?
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27 of 40 people found this answer helpful
Can the suckers be wet at the time of application and do you need to wait a certain period of time before the area gets wet after application -- pending rain or sprinkler system?
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20 of 25 people found this answer helpful
Monterey Sucker Stopper RTU is ready-to-use and should not be further diluted.
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13 of 14 people found this answer helpful
Monterey Sucker Stopper RTU is only meant to be a spot spray for directly treating shoots so the stream is the best application for this. Just direct applications to the target issue as directed on the label.
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9 of 11 people found this answer helpful
I have had a problem with suckers at the base of these trees and bought the product without looking at the details. And is non-bearing citrus a tree with no fruit on at the moment? My lemon always has fruit on it.
The only edibles which you can treat with this product are apples, pears, and olives. If your lemon tree has fruit that you intend to consume, then you should not apply this product to it. Per the product label:
"Apple and pear trees, healthy, vigorous and free from stress, may be treated after planting when the trees show established growth. Remove sprouts and follow the application procedures described below. Do not apply to non-established or stressed trees as injury and stand loss will result."
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8 of 11 people found this answer helpful
Monterey Sucker Stopper RTU
Rating: 2.4 (5 Reviews / 11 Q&A)
