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You can seed pumpkin inside

You can seed pumpkin inside in 2- to 3-inch pots. We're not sure what was used at school, but a good seed-staring mix should have plenty of nutrients. Provide water to the pumpkin every couple of days. Do not soak the soil each day. Let the soil dry out a little on the top first, then water thoroughly. The main issue is sunlight. Pumpkins need LOTS of direct sunlight to thrive. A sunny window may not be enough; in Canada, you may need grow lights.

Also, you have seeded too early. You need to seed indoors about 3 to 4 weeks before you would plant outside in the ground and you shouldn't plant pumpkin seedlings in the ground until 2 weeks after the last spring frost. For Canada, it depends where you live, but the last frost might be around late May/early June.

You could either plant the seedlings with a protective cover or you could just keep the bottom of the tray moist, or put some extra soil in the bottom of the tray, or transplant to a larger pot until it's time to go outside!

Hope this helps, the OFA editors