To effectively incorporate wasp-friendly elements into their gardens, gardeners can start by planting a diverse array of native plants that attract different species of wasps. Wasps are attracted to flowers with nectar and pollen, so including flowering plants such as goldenrod, asters, and coneflowers can help draw them in. Additionally, providing water sources like shallow dishes filled with pebbles for landing spots can benefit thirsty wasps. Leaving some areas of bare soil or decaying wood also creates nesting sites for solitary wasp species. Avoiding pesticide use is crucial since it harms not only harmful insects but also beneficial ones like wasps.