Detailed history of spongy moth treatments in B.C.

Last updated on February 5, 2024

Usually, spongy moths (Lymantria dispar; formerly referred to as gypsy moth) detected in B.C. do not survive and establish a population. However, in rare circumstances, treatments are required to prevent moths from establishing permanently. The first spray treatments in B.C. happened in 1979.

See a more detailed treatment history (PDF, 220KB)

Spray history
Year	Location	Treatment details
2023	Campbell River (303 ha) Courtenay (331 ha) Courtenay-Dove Creek (652 ha) Port Alberni (763 ha) Victoria-Belmont (341 ha) Victoria-Esquimalt (267 ha) Victoria-View Royal (381 ha)	Aerial Spray - Campbell River (JPG, 533 KB) Aerial Spray - Courtenay (JPG, 594 KB) Aerial Spray - Dove Creek (JPG, 396 KB) Aerial Spray - Port Alberni (JPG, 482 KB) Aerial Spray - Belmont (JPG, 585 KB) Aerial Spray - Esquimalt (JPG, 625 KB) Aerial Spray - View Royal (JPG, 796 KB)
2022	Burnaby (193) Chilliwack (49 ha) Coquitlam (41 ha) Cowichan (402 ha) Langley (362 ha) Mission (341 ha) Nanoose Bay (1,068 ha) Surrey (108 ha) Victoria-View Royal (50 ha)	Aerial Spray - Burnaby (PDF, 39 KB) Aerial Spray - Chilliwack (PDF, 104 KB) Ground Spray - Coquitlam (PDF, 30 KB) Aerial Spray - Cowichan (PDF, 30 KB) Aerial Spray - Langley (PDF, 28 KB) Aerial Spray - Mission (PDF, 30 KB) Aerial Spray - Nanoose (PDF,49 KB) Aerial Spray - Surrey (PDF, 24 KB) Aerial Spray - View Royal (PDF, 58 KB)
2021	Courtenay (187 ha)	Aerial Spray - Courtenay (JPG, 134 KB)
2020	North Surrey (241 ha) Cowichan Lake (231 ha) Castlegar (167 ha)	Aerial Spray - North Surrey (JPG, 184KB) Aerial Spray - Cowichan (JPG, 132KB) Aerial Spray - Pass Creek (JPG, 1MB)
2019	North Surrey (62.2 ha)	Aerial Spray - North Surrey (JPG, 133KB)
2018	Courtenay (94 ha) Agassiz (41 ha) Campbell River (45 ha) North Surrey (62 ha)	Aerial Spray - Courtenay (JPG, 175KB) Ground Spray - Agassiz (JPG, 606KB) Ground Spray - Campbell River (JPG, 529KB) Ground Spray - North Surrey (JPG, 600KB)
2017	Bear Hill (Saanich) 182 ha N. Surrey (Guildford) 26 ha	Aerial Spray - Saanich (PDF, 97KB) Ground Spray - N. Surrey (PDF, 84KB)
2016	-	No Treatment
2015	Surrey - 4576, 26 ha Delta - 204 ha	Aerial Spray - Surrey (JPG, 292KB) Aerial Spray - Delta (JPG, 163KB) Ground Spray - Surrey (JPG, 158KB)
2014	-	No Treatment
2013	-	No Treatment
2012	-	No Treatment
2011	-	No Treatment
2010	Harrison - 25 ha Richmond - 766 ha	Ground Spray – Harrison map (GIF, 13KB) Aerial Spray – Richmond map (GIF, 55KB)
2009	Harrison - 329 ha	Aerial Spray– Harrison map (JPG, 3MB)
2008	Salt Spring Is. - 7.4 ha Saltair - 13.3 ha Lake Cowichan	Ground Spray – Salt Spring Is. map (GIF 18KB) Ground Spray – Saltair map (GIF, 43KB) Mass Trapping – Lake Cowichan map (GIF, 25KB) Mass Trapping – Salt Spring map (GIF, 23KB) Mass Trapping – Saltair map (GIF, 48KB)
2007	Courtenay - 210 ha Salt Spring Is. - 10 ha Saanich (Cedar Hill) - 14 ha Belmont Park (Colwood) - 18 ha Sidney	Aerial Spray – Courtenay map (JPG, 90KB) Ground Spray – Salt Spring Is. map (GIF, 5KB) Ground Spray – Saanich map (GIF, 10KB) Ground Spray- Belmont Park map(GIF, 8KB) Mass Trapping – Salt Spring Is. map (GIF, 7KB) Mass Trapping – Sidney map (GIF, 9KB) Mass Trapping – Saanich map (GIF, 12KB) Mass Trapping – Belmont Park map (GIF, 10KB)
2006	Nanaimo - 10 ha Salt Spring Is. - 43 ha Saanich (Cedar Hill) - 9 ha	Ground Spray – Nanaimo map (JPG, 66KB) Ground Spray – Salt Spring Is. map (JPG, 56KB) Ground Spray –Saanich (JPG, 67KB)
2005	Duncan, Gabriola Is., Saanich, Langley	Mass Trapping
2004	Saanich (Mt. Douglas Park) - 570 ha N. Delta - 23 ha Abbotsford, Duncan, Gabriola Is.	Aerial Spray: Saanich map(JPG, 72KB) N. Delta map (JPG, 145KB) Mass Trapping
2003	N. Delta Saanich	Mass Trapping – N. Delta Mass Trapping – Saanich
2002	N. Delta	Mass Trapping
2001	N. Delta - 34 ha Sechelt	Ground Spray – map (GIF, 47KB) Mass Trapping - Sechelt
2000	Burnaby - 279.5 ha Sechelt	Aerial Spray – map (GIF, 99KB) Mass Trapping – Sechelt
1999	Victoria, Colwood, Esquimalt - 12,203 ha Duncan - 429 ha Nanaimo - 164 ha Brentwood Bay - 602 ha Tsawwassen - 51 ha	Aerial Spray Maps for: Victoria area (GIF, 21KB) Duncan (GIF, 8KB) Nanaimo (GIF, 9KB) Brentwood Bay (GIF, 7KB) Tsawwassen (GIF, 44KB) Mass Trapping - Fairfield (GIF, 7KB)
1998	Victoria, Colwood, Esquimalt	Mass Trapping, Ground Spray
1997	New Westminster Victoria, Colwood, Esquimalt	Host Removal, Ground Spray Mass Trapping
1996	Hope	Ground Spray
1995	Chilliwack	Aerial & Ground Spray
1994	Victoria (Maplewood) Nanaimo (Beban Park) S. Vancouver Whisky Cr Hope Hope - Kawakawa Lake	Aerial Spray - Victoria map (JPG, 502KB) Aerial Spray – Nanaimo map (GIF, 81KB) Ground Spray Aerial Spray Aerial Spray Aerial Spray
1993	Richmond Burnaby Salt Spring Is Victoria Hope	Aerial Spray – Richmond map (GIF, 179KB) Aerial Spray Ground Spray Aerial Spray Aerial Spray
1992	Parksville (south) Belmont Park (Colwood) Vancouver (Asian Gypsy Moth)	Ground Spray Aerial Spray Aerial Spray and Ground Spray
1991	North Saanich	Aerial & Ground Spray
1990	Parksville (North)	Aerial & Ground Spray
1989	-	No treatment
1988	Kelowna Parksville (North) Colwood	Aerial and Ground Spray Ground Spray Aerial and Ground Spray
1987	CFB Chilliwack	Aerial Spray
1986	CFB Chilliwack	Ground Spray
1985	Courtenay CFB Chilliwack	Ground Spray Ground Spray
1984	Ft. Langley Courtenay	Ground Spray Ground Spray
1983	-	No treatment
1982	-	No treatment
1981	-	No treatment
1980	-	No treatment
1979	Kitsilano*	Ground Spray - operational trial of Safer's Insecticidal Soap and Carbaryl

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Detailed history of spongy moth treatments in B.C.

Year

Location

Treatment details