@Bonehead
Deb-- There are two things you can try. 1-- Mix the recipe for some baking soda and mild ( no additive) dish soap, without the oil. Pour it over the plant and soil area. 2--Use Hydrogen Peroxide and water mixed, pour that over the plant and soil area I would probably try the baking soda and dish soap first and go to the Hydrogen Peroxide in 7 to 10 days, which maybe over doing it.
Soap kills alot and baking soda is a great neutralizer in case something is out of whack in the soil like a fungus. Hydrogen Peroxide kills alot also and sends oxygen to the roots. You cannot go wrong with either.
May you be blessed with success!
