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Christmas Tree and Nursery Spongy Moth Treatment Options

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April 17, 2026 - <lindbe35@msu.edu>,

Spongy moth (Lymantria dispar) is an invasive insect that can cause significant damage to a wide range of tree species. While conifers and Christmas trees are not preferred feeding sites and normally only incur minor needle defoliation, Christmas trees are suitable for spongy moth egg laying and could contribute to the spread of spongy moth. To prevent the spread of spongy moth to non-infected areas, a federal quarantine was created. To move trees out of the quarantine area (www.aphis.usda.gov/plant-pests-diseases/spongy-moth/spongy-moth-quarantine-map), which includes all counties in Michigan, tree growers must comply with the Michigan Department of Agriculture and Rural Development (MDARD) compliance program.

The MDARD compliance program for shipping Christmas trees outside of the quarantine area requires: 1) a mandatory pesticide application to ensure proper spongy moth control, and 2) an MDARD inspection of the trees. The following table lists insecticide active ingredients that have been approved as acceptable regulatory treatments to control spongy moth on Christmas trees. Please note that if you also dig nursery stock out the field for treatment, the pesticide label must allow nursery use (see the 4th column of the table below).

Pesticide efficacy is dependent on timing of the treatment, frequently called a "spray window” or the time when the target insect pest is susceptible to a pesticide application. Applicators should refer to guidance on proper timing of spongy moth pesticide applications available through MSU Extension (www.canr.msu.edu/christmas_trees) or MSU Enviroweather (enviroweather.msu.edu).

Active Ingredient

Product Name

EPA Registration Number

Nursery Use

Diflubenzuron

Dimilin 25W

70506-526

Y

Tebufenozide

Confirm 2F Fungicide

8033-111-10163

N

Tebufenozide

Mimic 2LV Insecticide

8033-113-73049

Y

Carbaryl

Drexel Carbaryl 4L

19713-49

N

Carbaryl

Carbaryl 4L Insecticide

34704-447

N

Carbaryl

Sevin SL Carbaryl Insecticide

432-1227

N

Carbaryl

Lesco Sevin Brand SL Carbaryl Insecticide #082007

432-1227-10404

N

Carbaryl

Sevin XLR Plus

61842-37

Y (Water Treatment)

Bifenthrin

Onyxpro Insecticide

101563-375

Y

Bifenthrin

Aceto Bifenthrin 2 EC

2749-556

N

Bifenthrin

Talstar Nursery Granular Insecticide

279-3130

Y

Bifenthrin

Onyxpro Insecticide

279-4269

Y

Bifenthrin

Sniper Insecticide /Miticide

34704-858

N

Bifenthrin

Sniper Helios

34704-858

N

Bifenthrin

Signature Bifenthrin

34704-858

N

Bifenthrin

Bifen GN 2EC Select

42750-394-89442

Y

Bifenthrin

Quali-Pro Bifenthrin Golf & Nursery 7.9F

53883-366

Y

Bifenthrin

Discipline 2EC

5481-517

N

Bifenthrin

Wisdom Nursery Granular Insecticide

5481-522

Y

Bifenthrin

Xpedient Plus V

5481-609

N

Bifenthrin

Wisdom G L/N

5481-683

Y

Bifenthrin

Omni Brand Bifenthrin 2EC

5905-626

Y

Bifenthrin

Fanfare ES

66222-236

N

Bifenthrin

Fanfare EC

66222-261

N

Bifenthrin

UP-Star SC Lawn and Nursery Insecticide/Miticide

70506-23

Y

Bifenthrin

Bifenture EC Agricultural Insecticide

70506-57

N

Bifenthrin

Bifenture EC

70506-57

N

Bifenthrin

Bifen 2 AG Gold

83222-1

Y

Bifenthrin

Bi-Dash 2E

83529-48

N

Bifenthrin

Bifenthrin 2E

85678-67

Y

Bifenthrin

Willowood Bifenthrin 2EC

87290-54

N

Bifenthrin

Bifender FC Insecticide

89118-2

Y

Bifenthrin

Reveal

89168-19-89391

Y

Bifenthrin

Reveal Endurx

89168-19-89391

Y

Bifenthrin

Batallion 2 EC

91234-104

Y

Bifenthrin

Tigris Bifen 2 EC

92647-17

Y

Bifenthrin

Tigris Bifenthrin LFC

92647-27

Y

Bifenthrin

Bifen 2EC Select

92647-32

N

Bifenthrin

GCS Bifenthrin 2EC

94730-8

Y

Methoxyfenozide

Invertid 2F

34704-1107

Y

Methoxyfenozide

Invicar 2SC

83100-65

N

Methoxyfenozide

Inspirato 2F

91234-62

Y

Methoxyfenozide

Vexer Insecticide

91234-62-89391

Y

Methoxyfenozide

Acora Insecticide

91234-62-92735

Y

Phosmet

Imidan 70-W Agricultural Insecticide

10163-169

N

Spinosad

Entrust

62719-282

Y

Spinosad

Lumiverd

62719-282

Y

Spinosad

Conserve SC Turf and Ornamental Insect Control

62719-291

Y

Spinosad

Conserve SC Turf and Ornamental

62719-291

Y

Spinosad

Spintor 2SC Naturalyte Insect Control

62719-294

N

Spinosad

Success Optim Naturalyte Insect Control

62719-523

N

Spinosad

Blackhawk Naturalyte Insect Control

62719-523

N

Spinosad

Matchpoint Insecticide

62719-523

N

Spinosad

Seduce Insect Bait

67702-25-70051

Y

Spinosad

Simpai

91234-279

N

Spinosad

Falcondor SC

91234-279

N

Acephate

Acephate 90 WDG Insecticide

34704-1051

N

Acephate

Acephate 90 WSP Insecticide

34704-862

Y

Acephate

Orthene Turf Tree and Ornamental WSP Insecticide

5481-8971

Y

Acephate

Acephate 90 Prill Agricultural

66222-123

Y

Acephate

Acenthrin Insecticide

70506-339

Y

Acephate

Acephate 97UP Insecticide

70506-8

Y

Acephate

Bracket 97 Insecticide

70506-8-1381

Y

Acephate

ACE-Jet

74578-2

N

Acephate

Tide Acephate 90 WDG

84229-7

Y

Acephate

Acephate 90 Prill Select

89442-40

Y

Acephate

Avatar PLX Insecticide

94396-29

Y

Cyfluthrin

Baythroid XL

264-840, SLN. No. MI-060003

N

Using an insecticide not on the list or outside of the effective spray window for regulatory treatment will result in denial of certification.

All applications must be applied at the maximum labeled rate. The product must be a registered pesticide in Michigan. MDARD’s Pesticide and Plant Pest Management Division publishes a list of registered pesticides in Michigan. See the link for “Pesticides Registered in Michigan” at www.michigan.gov/pestreg.

DISCLAIMER: When using any pesticide, follow the pesticide label for directions, application rates, methods, pollinator protection guidelines, and appropriate protective equipment. Confirm that the application site is on the label prior to use (a tool for this can be found at www.npirs.org/state/). Remember, the label is the law. See if you are required to become a certified applicator at https://www.michigan.gov/mdard/-/media/Project/Websites/mdard/documents/pesticide-plant-pest/pesticide/Pesticide-Application-Flowchart.pdf.

This work is supported by the Crop Protection and Pest Management Program [grant no 2024-70006-43569] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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