Sentence:  Hans Schweizer had one that increased from 19 - 1 2 inches to 5 feet 3 inches in five years , and J . J . Quelch records a <WSD>growth</WSD> of from less than 4 feet to nearly 10 in about six years . 
Meaning of the word marked with <WSD> tags:  (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level