Soak the seeds in warm water for about 2-3 hours, remove and cover with a damp paper towel. When the pumpkin seeds sprout white, sow them in soil pots or nursery trays.
Look for seeds that germinate to a depth of 0.3-0.5 cm. When the plant is 7-10 cm tall, the stem is strong, and has 3-5 large cotyledon leaves, transfer the plant to a large pot for planting.
When the seedlings grow to have 3 - 4 leaves and the stems are fat and strong, you can take each plant and plant them separately in pots, styrofoam boxes, large plastic buckets, or you can plant them directly in the ground or plant them.