the mutual intelligibility barrier between humans and plants makes it impossible to know whether the concept of democracy is supported by the plant kingdom or not

they cannot express their vote in an eligible manner

Plants have no proven sentience and ability to communicate their vote. As they are unable to vote -- and will never be able to vote -- there is no reason to give them voting rights.

Plants are not citizens. They do not pay taxes, and therefore are not granted the rights that human citizens are granted, including voting.

Plants would never vote, thus the law would be useless unless a plant would vote, which it doesn't, since it's too concerned about other things.

Plants cannot think.

plants are not intelligent

Plants are not people.

With today's technology, plants have no way to vote.

With today's technology, plants have no way to vote.

Plants cannot communicate with humans and vote in an eligible manner, nor can they assist in the right to govern. They should be granted, however, the right to assemble plant governments and restrict Venus fly-traps (also known scientifically as Trumptraps) from fucking everything up.

Plants have no place in human society, thus shouldn't be allowed to vote for the destiny of our species.