Hi, I'm usually just a lurker & am a novice gardener. This year will only be my second. Had alot of fun growing tomatoes last year & received an ad for something called tomato boosters. They are a black plastic collar that has a reservoir surrounding the whole that the tomato plant comes through. They say the reservoir is made for drip irrigation, that is has a cup for granular fertilization and that the collar helps with cutworms & weeds. They sell for 6 for $9.00. The price sounds reasonable. Has anyone used them? Thanks, Kim