Plant seed 1/2-inch deep in well-drained soil (they'll tolerate light shade, but yield less). Water at the slightest wilt; fertilize occasionally with water-soluble plant food until squashes start to develop.
I will buy seeds in the winter. then take the starter container and fill soil. i will bury the seed in 1 to 1. 5 inches deep and make it moist. Keep the pot outside and prepare plant to grow after first frost. We can grow spaghetti squash plant in normal land also with burying 2 to 3 seeds together in sunny area.
It's easy. Plant the seeds on a low volcano-shaped hillock in the spring, give them plenty of water, and they should "take-off". Give the vines LOTS of room.