Baking Soil

No, not mud pies. I'm trying to use the power of the sun to help me rid the potting soil from my potato barrel of pests, primarily slug eggs and some small wriggling worms which probably were potato tuberworms. I don't remember seeing any slugs on my potato plants, but there are definitely eggs visible in the soil. The worms are no longer visible, but I'm sure there are eggs still waiting to hatch.

Solarization is the process of using the power of the sun to sterilize soil. It's best done during hot summer months, but at least one website stated that it is somewhat effective during cooler months. It's worth a try. In most cases, soil in garden beds is covered with plastic tarps for 4-6 weeks during summer heat, longer in fall and winter.

I removed the potting mix from the potato barrel and divided it into four plastic garbage bags. To speed things up, I picked out as many slug eggs as I could find. First, I left the bags open to partially dry the soil. Then, I sealed them to start the "baking" process. The soil in each bag was about four inches deep. Also, in a closed environment the heating potential is increased. This will be particularly important now that fall has arrived.

Yes, I probably should have discarded the soil to make sure my potatoes next year have the best possible chance, but it seemed so wasteful. Has anyone successfully removed pests from potting soil? I would love to hear your experiences. -- Margy