Essential tools for advanced gardening include a high-quality set of hand tools, such as a trowel, weeder, and pruners. Long-handled tools, like a spade and rake, are also important for tasks like turning soil and breaking up clods. A garden hoe is crucial for weeding and preparing the soil surface, while a wheelbarrow or garden cart makes transporting materials easier. As an advanced gardener, consider investing in additional specialized tools, like a soil testing kit, seed-starting supplies, and irrigation equipment, to further enhance your garden's performance.