Always fertilize during cool or cold months of the year. Nitrogen found in fertilizers can bum the roots if applied during the hot months of summer. Your second most pressing need for your grove will consist of securing equipment. You'll need at least three sets of gear to get started with a grove. The instructor will use one set and the other two sets used for students.
Additional sets give more opportunities for other climbers.
Leadership You'll require sound leadership to get your grove started. Look for three enthusiastic adults. If you can get a professional tree climber involved, so much the better. Concentrate the professional on teaching knot tying and other skills that he can mostly teach from the ground. A professional climber usually needs to rest during the weekends.