Grass can usually last some time (around a week) without getting direct sunlight and water. So if you keep your trampoline in one place for that amount of time, the grass might survive without dying. ... Even if you are not mowing your lawn that regularly, make it a habit to move your trampoline once a week.

Does trampoline have to be on grass?

Ideally the trampoline should be on soft ground to absorb the impact energy. Probably the best surface is bark or similar as this is soft and energy absorbing, will provide good drainage and supress any weeds. There is also no need for grass cutting underneath. You should avoid hard surfaces like concrete or tarmac.

Should a trampoline be on grass or concrete?

Place the trampoline on soft, energy-absorbing ground. Good options include sand, bark or other materials that produce a cushioning effect. Don't put the trampoline on concrete, asphalt or other hard surface without having a trampoline safety net or crash mats in place.