Will dark green pumpkins turn orange? When to pick?
Will they change color to orange? How do I know when to pick them?
I can send a photo if you like.
Although there are green varieties of pumpkin, my guess is that your pumpkin is not one of those varieties. Your pumpkin will turn orange if the vine is still in good shape and has not rotted or died, and there has not been a frost. So hang in there. A pumpkin is ripe when the skin and stem are hard, and it sounds hollow when you thump it. And, of course, the pumpkin is ripe when it is orange on the vine. However, you can make the pumpkin turn orange if it hasn't already done so within the next couple of weeks. Here's how:
Cut the pumpkin from the vine, leaving a stem of a couple of inches. This keeps the pumpkin from rotting at the top. Gently clean the pumpkin, dry it and wipe it down with a diluted bleach solution. Keep it in a warm, dry, sunny spot. Sun is needed to turn the pumpkin orange. Turn green parts to the sun. If the whole pumpkin is green, rotate it so it turns orange evenly. I hope this works for you.
Read more at Gardening Know How: Getting Green Pumpkins To Turn Orange After The Pumpkin Vine Dies https://www.gardeningknowhow.com/edible/vegetables/pumpkin/getting-green-pumpkins-to-turn-orange-after-the-pumpkin-vine-dies.htm