Question
how do I know by looking that a cantelope needs to be picked?  How any days does it take it to mature from starting to form?

Answer
Karen:
You can read my answer on picking cantaloupes here: http://en.allexperts.com/q/Growing-Vegetables-740/2010/6/Cantalopes.htm#b

(You can often find the answers to your questions more quickly by browsing or searching past answers)

As for how many days it should take, it will be anywhere from 75 to 90 days, depending on the variety and the weather conditions.

Elyse