I made a mildly interesting observation about bindweed today....
I've had two lawns in two different homes with bindweed problems. Both of these problems were minor when i moved in and progressively became worse. I don't water or mow nearly as much as i should to keep the grass looking good and don't weed much either. So the bindweed took over; granted the previous caretakers may have used weed and feed...
I created a new garden area this spring by tilling under some grass with a small bindweed problem. Of course, with the tilling, the bindweed completely took over. It is now planted with corn and potatoes, which fortunately seem to be doing well, I didn't have enough mulch to smother the weeds, so i mostly just left them alone. I've got to say, the bindweed seems to make a pretty effective green mulch. There's some mallow, dandelion and purslane in there too, but mostly bindweed. It is over a foot deep in the most-heavily watered places... It even managed to solidly establish itself in a brand new raised bed (filled with 6+ inches of brand-new potting soil)
. It is profuse in a park area nearby, (though nowhere near as bad as it is in the garden) but mainly only in high-traffic areas where the grass seems to be seriously struggling. That park gets watered regularly, but is also scalped with a mower once a week.
Today I realized something, though. The bindweed in the park and the bindweed in my lawn both have been flowering for over a month now. The foot-deep stuff in my garden doesn't have a bloom in sight. So... I would infer from that, that the stuff competing with the grass is seriously stressed and only surviving where the grass doesn't... I haven't been around long enough to know, but aside from making gardens and yards look horribly neglected, and perhaps smothering a small sun-loving plant or two, does bindweed really do much damage? My corn and potatoes seem to mostly be doing fine. The potatoes have a small bug problem, but it doesn't seem to be related to the bindweed at all. Actually the bugs seem to be the most active where there is the least bindweed. My observations make me think bindweed is just an opportunist that can be out-competed, with tolerable ease...