Why should not we water plants too much? Share with your friends Share 0 Advik Bijulal answered this We should not water the plants too much because the water will fill the space and oxygen cannot enter the soil.This will make the plant deficient of oxygen resulting in the death of the plant. 2 View Full Answer Pranav Undefined answered this because the plant need some amount of water the remaniming water is wasted 0 Dhruv Aggarwal answered this because in nightbthey realese carbon dioxide 0