wayne fajkus wrote:
Sounds like it was unintentional so you have to decide how far you want to go.
Here is a reasonable plan of attack: (1) get a truckload of mulch that contains lots of tannins. Oak leaves would be perfect, what you want to avoid is actual structural wood like pine logs or lumber or wood shavings or newspaper, those things are all cellulose. (2) dump the pile where you can water it daily. (3) Go on a mushroom hunt for some white-rot fungi. You can start here with Phanerochaete chrysosporium, which is pretty easy to collect from the underside of a well rotted log. (4) Take your sample of white-rot fungi and whiz it in the blender, say a quarter cup of scrapings in a liter of water. (5) Sprinkle this over the pile of mulch and water it in good. You don't need to bother to cover it, the sun may dry out the top inch or so, but you want to water the pile every evening. Remember that advice when NOT to water your garden because it might cause fungal problems? Now is the time to break that rule -- you want the fungus to take off. After a few weeks, depending on the temperature, you should be able to dig into the pile a few inches and see gobs and gobs of white mycelia. This is good. Now the fungus is ready to do its work detoxifying your lawn. (6) Wait for a day when there is heavy rain forecast and get out before (or during if you don't mind getting wet) and spread your pile of prepared mulch out over your lawn. Not more than an inch thick, you want the heavy rain to beat down on the mulch and drench the fungal mycelia and spores into the soil.
Jenny Thomas wrote:
The wood mulch idea is certainly something I never would have thought about trying. Could you direct me to more references to understand more about this approach? I had wondered about adding a thick layer of topsoil. Seems the mulch is thinking along a similar line.