We have birds around here all the time dropping cinnamon and allspice seeds, and they just grow with no special attention. I dug one up, and put it in a pot until it was about 1 1/2 ft tall, then put it in the back yard. After it was 15 ft, the 'ass-ociation' made me cut it down. I never did anything special, and it never had any pest problems (probably due to the oil in the plant giving it that special scent) so I couldn't offer much info.