Answer:
There's not really a question to answer there, you've only stated the information that we know. From what I can see the only conclusion I can make is that Sterling plants a tree that is 4 3/4 feet tall, but that's already written and with all the information provided that's really all I can say.
Sorry if that's not exactly what you were looking for, maybe if there's more to the question re-post it with the entire question?