1) By making bread frequently, I generate a lot of "scrap" flour, as well as a mix of flour and water from soaking mixing pots to clean them

b)  I have lots of plants

iii) flour contains stored energy 

Can I water patio or house plants with this "contaminated" water without any negative effects? I am concerned about mold, or that for some (unknown) reason, this would kill plants. Anyone have experience or a biochemistry background to provide an answer? Would this serve as fertilizer, or poison?