Jeśli w tym samym ogrodzie nie ma żadnego koniowatego, to nie ma problemu 
Dwa na szybko znalezione:
http://onlinelibrary.wiley.com/doi/10.1111/j.2042-3292.2001.tb00074.x/abstract
http://www.google.pl/url?sa=t&rct=j&q=acer%20rubrum%20toxicity%20pdf&source=web&cd=13&ved=0CFYQFjACOAo&url=http%3A%2F%2Fxa.yimg.com%2Fkq%2Fgroups%2F2335083%2F316669229%2Fname%2Fred%2520maple%2520toxicosis.pdf&ei=Eo7ZT95Qj8GzBsT60N4H&usg=AFQjCNE3mKT657mV7OODi83eYai01sWlIA&cad=rja

Dwa na szybko znalezione:
http://onlinelibrary.wiley.com/doi/10.1111/j.2042-3292.2001.tb00074.x/abstract
http://www.google.pl/url?sa=t&rct=j&q=acer%20rubrum%20toxicity%20pdf&source=web&cd=13&ved=0CFYQFjACOAo&url=http%3A%2F%2Fxa.yimg.com%2Fkq%2Fgroups%2F2335083%2F316669229%2Fname%2Fred%2520maple%2520toxicosis.pdf&ei=Eo7ZT95Qj8GzBsT60N4H&usg=AFQjCNE3mKT657mV7OODi83eYai01sWlIA&cad=rja