This process is the same for crystals and gems you may find in the mines. 1  Finding Copper - Available initially, just rare. 2  Finding Iron - Available from level 40+, it will get more common in the 60s and 70s. 3  Finding Gold - Available from level 80+, it is most common when you pass level 100 of the mine.
Depending on the size of the pumpkin variety you planted, the pumpkins should reach maturity at around 100 days. Pumpkins larger than 25 pounds might take 120 days, while small cucurbits, often used for tabletop decorations, can be ready in as few as 80 days.
Residing on a trailing vine, pumpkins grow from a dark green to a brilliant orange, but it can be difficult to determine when a pumpkin is actually ripe from just observation. A number of different strategies have been formulated to pick the pumpkin off of the vine at the correct time.