Usually mulch is used to cover areas where weeds grow. These weeds, if allowed to grow, will typically sap nutrients away from your desired plants. Using mulch will actually help your plants stay alive if applied correctly to stop weeds from growing and choking the roots of your plant.
As long as you don't smother your plants with mulch, it should not kill them.
yes, it will kill them
Too much baking soda can cause a build-up of materials and kill plants.
Unless you have extremly bad breath, no.
if you add too much of it it willsalinate the water and may kill the plant.
to be honest too much fertiliser itself sprayed on the plants can slowly kill you
Mulch helps plants a lot, when you spread mulch around the plant leaving one to two inches away from main stem or trunk it protect the roots just on the surface of the ground from the weather either freezing or hot. Mulch helps also by keeping the top area around the plants from drying out too fast, this is especially helpful if you grow ferns or moisture loving plants. You can use bark pieces (tiny or bigger chunks) leaves, sawdust/wood shavings.
too much water too little water too much fertiliser not enough fertiliser herbicides amongst other methods
too much water will kill the roots
Too much salt can kill plants including chrysanthemums.
Too much heat could dehydrate water and kill trees and plants.
yes it can kill you. it is a pain killer but if you take too much it can kill you.
Well, chemicals can harm you if you eat your plants, it can seep into ground water and contaminate drinking water, and can, if you use too much, kill plants.