Trampoline maintenance is very simple. For instance, make sure you remove any snow buildup during winter.
You can use a soft-bristle broom or brush to gently push snow from the frames of the trampoline. If you are keeping the jumping mat up, clear snow by pulling the snow from the center of the mat towards you and finally off the edge.
As for greasing, it’s best to apply grease during warm, dry weather to all of the springs.