plant not getting enough sunlight

my plant is over a month into flowering and the pistils are turning red/brown. However it is getting nowhere near 12/12 sunlight. Theres a row of trees that just block the good sunlight right out. Its in the ground so I cant move it. Is there any type of nutes or anything that would make up for the lost sunlight? Thanks a lot.

I'm afraid not.

no, but you could go up to that tree and say "hey, FUCK YOU!" and break off some branches that are blockin sunlight to your plant.