The Incredible Shrinking Man

A tree in nature and growing under perfect conditions, will grow until it reaches the predetermined height and width for that species within the given environmental circumstances. Upon reaching full potential the now massive amount of foliage at the incalculable number of branch tips is just too vast. The tree starts to weaken and eventually [...]

As with animals, Plants can be dwarfed through genetic engineering and selective breeding, but environmental stresses  such as soil quality, light, drought, flood, cold, infection, and herbivory, can also lead to a dwarfed stature . However the majority of dwarfing in plants does not directly occur from environmental damage but from stress hormones produced in response. [...]