What can you do to make a white pumpkin last forever?

make one out of white fabric and stuff it!

real pumpkins will never last forever.

Real pumpkins even if dipped in varnish will eventally rot. Trust me you do not want to deal with that icky mess. I would find a real good plastic one and enhance with paint. Here are some links, have fun! 🍊🍊🍊

https://simpleandseasonal.com/day-124-make-your-decorative-pumpkins-last-longer/

http://www.extremepumpkins.com/pumpkin-preservation-methods.html

http://www.onecountry.com/3-ways-to-make-your-halloween-pumpkin-last-forever-1648147262.html

Unfortunately there is no good way of preserving pumpkins. They just rot into a very yucky mess.

Catherine and Naomie are right.

If you want permanent pumpkins, buy artificial ones. As for real ones, appreciate nature, and think of them in the same way as real Christmas trees- they don't last until next year.

To every season, turn, turn, turn .........