Yesterday i posted some photos to a
plant ID thread over in the plant forum for a low growing weed we have here at Wheaton Labs. Maybe you know what it is?
I've been pulling knapweed by the road so the county doesn't come by and hose us down with toxic gick. I noticed a couple of biological control insects on them. The county won't wait for these to be effective. I captured a few to be transplanted to the area across from ant village (since i was removing the food source for their offspring).
The first is the Knapweed Root Weevil (Cyphocleonus achates). They like to hang out at the bottom of big knapweeds and lay eggs so the next generation will bore out the big taproot. This will usually kill the knapweed within two years.
The second is Blunt Knapweed Flower Weevil (Larinus obtusus). It could also be the almost indistinguishable L. minutus, but they prefer the diffuse knapweed while L. obtusus prefers the spotted, so i'm betting it's the first. The larvae of these will eat the maturing seed resulting in a drastic reduction in viable seed.
The root and flower weevils together can result in as much as 95% reduction in the amount of knapweed within a few years.
Growies! The third photo is some melons i planted around the shower water heater
compost when that was being rebuilt last month. With the recent rains they are growing fast! A couple of them are blooming too!