Diapers
Another good tip for preventing excess rainwater for drowing your plants: use diapers. Planting these underground will help absorb excess rainwater, as, by design, they are incredibly absorbant. Be sure, though, to only use biodegradable diapers. These will eventually turn into compost, which will give your garden an additional boost, while plastic-based diapers will end up hurting your garden’s health.