You probably don’t have to toss it. I’d try sterilization first, and if it happens again, you’ll know that the soil can’t be reused. You can sterilize it by baking it in the oven at 180°F for 30 minutes or leaving it in a clear plastic bag in the sun for a few weeks.
You probably don’t have to toss it. I’d try sterilization first, and if it happens again, you’ll know that the soil can’t be reused. You can sterilize it by baking it in the oven at 180°F for 30 minutes or leaving it in a clear plastic bag in the sun for a few weeks.