Question about pumpkin vine block compatibility.

[Ragulmadon]

Can pumpkin vines grow across blocks other than untilled soil blocks?

I was looking around and didn't find answers on blocks compatible with the pumpkin vines.

My plan was to embed greenhouses in the ground within the large spaces I have between pumpkin mother plants to save room in the village. Will the vines spread across glass blocks? Does it matter if they're glass slabs?

I'll test it myself soon but I figured I'd ask here before spending the time.

[Maelstrom]

Yes.  They just need to be top block flush with the farmland you plant the seed in.

Just till the ground where the seed is planted.  Put a water source diagonal to that block for maximum moisture.  I've heard placing a block on the diagonals of the seed can increase the yield of punkins.