<span class="link_user">@Barneysfarmer10</span>, sowing a cover crop and having a mulch layer will help alot to stop the surface of the soil drying out too fast which will help that "waterproof" effect. I also have tiger worms in the pot with the organic soil
<span class="link_user">@Barneysfarmer10</span>, no it's a mix of clover, barley and rye. They help to stop the soil from compacting over time and the clover helps build nitrogen in the soil