My yard has always been litterally filled with black widows. I spend time during the spring and summer doing search and destroy, with a stick, but that just thins the herd a bit. Thankfully they only show occassional interest in the house area. The best control stems from removing their habitat. Most of the black widows here in the east are reclusive and generally will nest only in any dark recessed areas. That trait has given rise to one of my more effective black widow controls. I simply place a few one gallon nursery pots around the yard, and in a day or two, usually a black widow has move in, and meets her end from the end of a stick. If you clean up any piles of debris or of stored piles of lumber, logs, or other piles or stacks that provide their favorite nesting sites, keep heavy weed spots cut relatively short, and be careful how and what you store in out buildings, and the black widow density will stay fairly low. One nice thing is that the spiders are quite reclusive and usually not aggressive. On the other hand, like all cold blooded spiders and insects, they get very agitated in weather over about 90 degrees, and during those times will run out and and attack faster than you would imagine possible. Be aware of their irregular web shape with its high luster, and squish both the spider and her egg sacks, any time they are found in an area of concern. Black widows are resistant to most long term house hold sprays so best to focus on habitat removal and mechanically killing the individual spiders. Good luck in co-existing with these creepy and somewhat dangerous spiders.
Last edited by hendi_alex
on Sun Aug 16, 2009 8:03 pm, edited 1 time in total.
Eclectic gardening style, drawing from 45 years of interest and experience. Mostly plant in raised beds and containers primarily using intensive gardening techniques.