You might get more responses if you post in the Organic Lawncare Forum You can buy organic fertilizer, but a lot of organic lawns are fertilized with what would normally be considered animal feed, such as cracked corn, soybean meal, alfalfa, etc. I used to get coffee grounds from Starbucks and spread them (now I have native grasses and don't fertilize at all). I don't know anything about grubs, so I can't help there. The only organic pre-emergent that I know of is CGM. I've read mixed reviews of its effectiveness. From everything I've read, you need to make sure you use it correctly. I think it has to be watered in well and then it requires a dry spell because it works by drying the newly germinated grass before it can develop roots. If it rains at the wrong time, it won't work. Also, I've read that it takes a number of years for its effectiveness to start showing. You may get better results just through cultural practices. Mow at about 4 inches (or at the highest setting if the mower won't go that high). Water deeply and infrequently (shallow frequent water helps seeds germinate). Apply fertilizer in the spring and fall, with most of it in the fall. If you can get a dense grass cover, the crabgrass won't stand a chance.

I've used Grub-X, and loved the stuff. They say it's good for a year, but that's not my experience. In my view, it's good for TWO years. Drifting toward three. I put it down, and no grubs, no voles chasing the grubs around, and none of those irritating little white moths, that let you know 'Hey! I just came up from being a grub in your lawn. And I'm gonna fly away and lay some eggs on your lawn. And all my siblings are still there in the lawn.' Nope. I put it down in the fall, and in the third year, no voles still, but I get the moths drifting toward fall. So then down goes the grub-x again. With results like that, why would I try anything else? Because they sold out of GrubX, that's why. So this year, I'm about to put down some Bayer. I'll report on the effectiveness of it next year.

They're swarming and it's a timing thing. The numbers will go down soon as they don't live long, but you want to do some serious sexual interruption here, if you can, to cut back on the next wave of bugs. A modern UV zapper (or two) left on at night without other outside lights, or right beside an outside light that's inconvenient to shut off, can be a somewhat effective remedy. You supply the birth control and the chickens continue to eat organic food. Everyone wins! Work both stages. You may be surprised at June Bug grub density. This sounds like a long term project. >> Pray the nematodes have taken care of the grubs ... in the fall when they are due to hatch next. You have Fall rains after a long-ish dry spell, don't you? That might be your Fall trigger.

Soil bacteria, even those fed with compost, will not feed on grubs. Beneficial nematodes will and the Milky Spore Disease will kill certain types of grubs. Few of the grub control products work well in the spring because the grubs are pretty much done feeding and are getting ready to pupate and then emerge as adults to mate and then lay eggs that will hatch in August thru October. That is the time to have control products in place, by August. kimmq is kimmsr