I love Japanese pumpkins.....I have one that is a climber, too.
Yours looks healthy.
Have you planted them before?

thanks carol,
i don't know why it grows like crazy. I actually planted it in milk carton sitting on top of the small green container. The reason is becuase last year, gophers ate my pumpkins that were on the ground. Let's see if the gopher can chew thru it container. I think the roots are penetrating into the dirt. I planted it the same time as this one that's in a planting pot sharing with a manderine tree, someone it is three times bigger. I don't know why. they both get about the same amount of sun. I also apply lots of steer manual to both plants. they love them.

Awesome looking plant!