Does beer affect plant growth

I can't speak with any authority other than my own personal experience, but as far as house plants go, the short answer is yes. It can make them very sick or kill them. The way I know this is that we had some people over for a party and one of the guests, rather than dumping it down the sink, poured the last 1 or 2 oz of his beer into one of my house plants. The problem was very obvious the next day and it took weeks of nutrients and care to get it back to health. At another party about a year later the same guest did the same thing to the same plant. Unfortunately, that time I was not able to save it and it died. It was the first plant I've lost in more than 35 years of having and caring for my house plants. The guest has since been told that if he ever does that to one of my plants again it will be the last party he is invited to attend.