How long will it last? I have no idea :-p This is the first time I have done it!

Won't the pumpkin go bad and ruin the plants? The pumpkin will go bad, but I hope that it will not ruin the plants before it goes bad. Since this is my first try with this, I don't have any wisdom. But I imagine that it should be fine since I would only be keeping this for the fall season and then replanting the succulents after that. Granted, you could always take them out at any given time if you are concerned.

Can I try this in a large pumpkin? Sure, why not?! Actually, if the pumpkin is large enough and the stem creates a deep enough valley, you may be able to remove the stem without cutting into and hollowing the actual pumpkin! In this case you can put your soil in that valley on the top of the pumpkin and just plant the succulents on top instead of into the pumpkin! This may last longer? I have no idea!

​How do I water it? Carefully. You're working with a small area and a small amount of soil, and succulents which don't need an abundance of water at one time. That means water very minimally. If the water pulls inside or on top of the pumpkin then the pumpkin will rot faster and the succulents can also rot. I personally am using a spray bottle for more controlled watering.

Any other questions, let me know below! *If* I have any insight I will let you know! :)

(PS Sorry for the excess dirt on the pumpkin. I was so excited to take the picture that I didn't brush it off. Clumsy..)