Why Shop with Us
Customers also Bought:
Monterey Once A Year Insect Control II is an imidacloprid insecticide for control of leaf hoppers, mealy bugs, scale, whitefly, borers (including Emerald Ash Borer), and many other pests in ornamental trees, shrubs, and certain fruit and nut trees. Once A Year Insect Control II is used as a soil drench treatment that controls target pests for a whole season.
|Active Ingredient:||Imidacloprid - 1.47%|
|Target pests:||Adelgids, Aphids, Vine Weevil Larvae (including Black Vine Weevil), Borers: Roundheaded Borers (including Asian, Longhorned Beetle and Eucalyptus, Longhorned Borer); Flatheaded (including Bronze Birch Alder and Emerald Ash Borers), Japanese Beetles, Lacebugs, Leaf Beetles (including Elm Leaf Beetles and Viburnum Leaf Beetles), Leafhoppers (including Glassy-winged Sharpshooter), Leafminers (including Birch Leafminers), Mealybugs, Pine Tip Moth Larvae, Psyllids, Royal Palm Bugs, Sawfly Larvae, Scales (including Armored Scale [Suppression] and Soft Scale), Thrips, Whiteflies|
|For use in:||For use on outdoor trees and shrubs, including listed fruit and nut trees: Apple, Loquat, Oriental Pear, Pecan, Crabapple, Mayhaw, Pear, Quince|
|Application:||Trees: 1 oz. per inch of distance around trunk
Shrubs: 3 oz. per foot of height
|Pet safe:||Yes, when used as directed on label - Safe when dry|
|NOT FOR SALE TO:||DC, HI, ND, NE,|
|Shipping Weight:||2.26 lbs|
|Manufactured By:||Monterey Lawn & Garden (Mfg. Number: LG 6340)|
Do not apply near lakes, streams, rivers, or ponds. Do not apply to soils which are water-logged or saturated. Bucket or measuring utensils should not be used for any food or drinking water purposes after use with this insecticide.
For use on outdoor trees and shrubs, including listed fruit and nut trees:
- Oriental Pear
DO NOT apply this insecticide, by any application method, to linden, basswood or other Tilia species.
See all 3 reviews »
3 of 6 people found this review helpful:
By Drucilla in Lehigh Acres, Florida on 01/19/2015
It was easy to mix and use. Not sure how the end results will pan out because it is a systemic application and it takes time for the plants to take in the product and the insects to die. I'm hopeful that it will work and I will continue to purchase this
Monterey Insect control
By Darrell in Bethany, OK on 07/24/2016
I was recommended to this product by Pro-cure Nursery. It was the end of May and I was told, that to be effective it should be applied in March, before sap was rising, to be effective. I went ahead and applied to 5 mature pecan trees. In mid June the worms hit heavy. I watered heavy with my springlers and could the see leaves green up and grow darker. Leaving me to believe I was pulling the sap to all of the tree. The worms were very active for about 3 weeks, Since July ! I have not found a single live worm. They have completely dried up. (They look like sand burrs in a wad) I will for sure treat all trees in March nest year
Monterey Once A Year Insect Control II
By Pete in Newton, IA on 04/30/2017
I have been using this product for 3 years now for ash bores. Product is easy to use, and so far has protected my ash tree. Will continue to use, and have recommended to others.
Have a question about this product?
Ask our product experts...
Ask a Question
11/28/2014 Greg from Ft. Myers, Fl
Qficus bushes, 160 LF X 8.5 ft high. How much product will I need per LF to treat whiteflies?
AFor this product you would need about 25 ounces per shrub in whatever amount of water volume it takes to evenly distribute it into the root system. That being said, this is not going to be your most economical product for whitefly control. A much better option would be the Dominion 2L which is cheaper and will go further for you. You would use roughly 1.7 ounces of the Dominion 2L per shrub (thats 0.2 ounces per foot of shrub height) in the water volume necessary for even distrubution. This normally comes out to about 3-5 gallons of water per shrub to disperse the 1.7 ounces. Depending on how many individual ficus bushes you have along that 160 LF will depend on how much of the product you would need. If you are using 1.7 ounces per shrub, then the 27.5 oz bottle of Dominion 2L will allow you to treat 16 individual ficus bushes.
09/27/2013 Joette from Stuart, Florida
QCan Monterey Once A Year Insect Control II be used on palm trees?
04/01/2013 Judy from Milford, Ca
QIs it safe to eat fruit after applied with Monterey Once A Year Insect Control II?
After using the drench early in the spring, is the fruit safe to eat? Can it also be used on pears and grapes?
AThis product can be used one the following fruit/nut trees only: Apple, Loquat, Oriental Pear, Pecan, Crabapple, Mayhaw, Pear, Quince. Fruits from these treated trees are safe. The product cannot be used on any fruits other than the ones listed above.
06/14/2014 Guy from California
QCan Monterey Once A Year Insect Control II be used indoors? Treat a variety of different plant species?
AMonterey Once A Year Insect Control II should only be applied to trees and shrubs outdoors. It should NOT be applied indoors for insect control per the product label. It is used for outdoor trees and shrubs including listed fruit and nut trees such as: apple, crabapple, mayhaw, pecan, loquat, oriental pear, pear and quince.
03/24/2015 Mimi from Lafayette, La
QI have 8 crepe myrtle trees with multi-trunks. Is it reasonable that I would need 4 gallons?
trying to make sure I am measuring these multi trunk trees correctly. Some have 5+ trunks.
AWhen using Monterey Once A Year Insect Control II, you will measure the distance in inches of each tree trunk and add them together. You will then multiply this total by 0.75 to get the required number of ounces of product to apply. You will need to make sure you are using this in at least 3-5 gallons of water to ensure that the product is getting into the roots properly.
06/20/2016 Mike from Dunnellon, Florida
QIs Monterey Once A Year Insect Control II effective for Sago Palm scale?
A Monterey Once A Year Insect Control II†is labeled to control soft scale and suppresses armored scale.†
Monterey Once A Year Insect Control II†is labeled to control soft scale and suppresses armored scale.†
08/11/2014 Allen from Wilton, Ca.
QCan I apply Monterey topically and get good results for white flies.
Instructions for Monterey say it is a systemic insecticide.
AMonterey Once A Year Insect Control II is really designed for application to the soil as a systemic. While waiting for the systemic to trans locate, you can apply Talstar as a foliar spray.
11/17/2013 Wayne from Cape Coral
QI have a Ficus Hedge 6 ft tall along the lot line (120 ft). How much product do I need for treatment?
APlease provide more information (including the name of the insect) that you are treating so we are able to provide you with the information you are seeking. Thank you.
06/28/2015 Vikki from San Diego, Ca
QWill this product help with control of spider mites on redbud trees?
07/30/2015 Kathy from Lebanon, Oregon
QCan we eat the apples from apple trees where I used Monterey Once a year Insect Control this spring?
A Yes, you may consume apples from a tree that has been treated with the Monterey Once A Year Insect Control II.
Yes, you may consume apples from a tree that has been treated with the Monterey Once A Year Insect Control II.
04/02/2013 Chuck from Rockford,il
QFor Monterey Insect Control, must the ground be bare or can this be used on grassy soil
I was told that this would only work on bare soil, otherwise just the plants would absorb the product and not the tree
AGrasses or other plants could absorb some of the product but if you use a higher volume of water it will really help get the product down to the roots of the tree.
06/01/2014 Diane from Bend, Or
QWill the Monterey Once a Year Insect Control kill my columnar aspen?
I used your product on my columnar aspen trees and they started dropping a lot of leaves. Will your product kill my trees?
AThe Monterey Once a Year Insect Control should not have any negative effects on plants to cause them harm. You should contact the manufacturer for further troubleshooting on what could be occuring to your plants that you treated. You can reach the manufacturer at 559-499-2100.
09/29/2014 Terry from Clovis
QWhen is the best time to apply Monterey Once A Year Insect Control II?
I live in Central Calif and our crepe myrtles are emitting lots of "honey dew" right now (late Sept) . If I apply Monterey OAY Insect control now, will it help the tree for 12 months? O is it best to wait and apply before the next grow season?