How We Can Help You
more about biological control & the program
Biological control availability can be limited, and in some cases non-existent based on environmental conditions. Partaking in this program will require:
-
flexibility
-
last minute availability
-
patience
​
Agents are only available at pre-determined times by the CMWA. Join our biocontrol email list to receive notifications about timing and availability. We notify our biocontrol emailing list when the season is underway, gauging interest and demands. Please contact us to join our biocontrol list.
Prices may vary by season and by insect.
Please note the 'emerge' and 'collect & release' timing information below. If you are inquiring before or after that identified time, the agent you are looking for will not be available due to its life cycle.
COMMON BIOCONTROL SPECIES
Knapweed species
Knapweed Root Weevil
Scientific Name
Cyphocleonus achates
Noxious Weed
Knapweed
Emerge
August
Collect/Release/Monitor
Late summer
CMWA Use
Yes, monitor for it
Knapweed Flowerhead Weevil
Scientific Name
Larinus minutus & Larinus obtusus
Noxious Weed
Knapweed
Emerge
July
Collect/Release/Monitor
Summer when the plants are in early flowering stages
CMWA Use
Not usually b/c very mobile, monitor for it
Toadflax species
Toadflax Stem Weevil
Scientific Name
Mecinus janthiniformis
Noxious Weed
Dalmatian toadflax
Emerge
May - June
Collect/Release/Monitor
Spring thru mid-summer as plants are bolting to late flowering
CMWA Use
Sometimes, monitor for it
Toadflax Stem Weevil
Scientific Name
Mecinus janthinus
Noxious Weed
Yellow toadflax
Emerge
May - June
Collect/Release/Monitor
Spring thru mid-summer as plants are bolting to late flowering
CWMA Use
Sometimes, monitor for it
Leafy Spurge
Leafy Spurge Flea Beetle
Scientific Name
Aphthona species
Noxious Weed
Leafy Spurge
Emerge
June - July
Collect/Release/Monitor
Late summer when plants are flowering and beginning to mature
CWMA Use
Yes, monitor for it
Leafy Spurge Stem Borer
Scientific Name
Oberea erythrocephala
Noxious Weed
Leafy Spurge
Emerge
May - June
Collect/Release/Monitor
Early summer as plants are flowering
CWMA Use
Rarely, but monitor for it
Leafy Spurge Hawk-moth
Scientific Name
Hyles euphorbiae
Noxious Weed
Leafy Spurge
Emerge
May - July
August - Septmeber
Collect/Release/Monitor
Two generations: first early to mid summer, second late summer
CWMA Use
No, but monitor for it