Read the text and answer the question. Old Tom owns a lovely, small garden behind his house. This garden is home to different flowers and two robust apple trees. Every morning, as the sun rises, Tom starts his routine of watering the flowers and inspecting the apple trees for any new fruits. He enjoys the company of the birds that come to his garden, and the Red Robin is his absolute favorite. The presence of these birds adds a joy to his life. Tom finds pleasure and tranquility in the time he spends in his garden, which has become the best place for him. What activity does Tom perform on the apple trees every morning?