Depending on the type of seeds you have, times may vary. The U.S has different gardening zones. These zones help to let people know how long their growing season is. For example, AK is in zone 1 so gardening season is non existant. People in Florida can almost grow things all year long since the climate is so warm. The map below will let you know what zone you are in. Using your zone, you can visit the Farmer's Almanac website and enter your zone or zip code. The site will let you know how many months long your growing season is. If you have a variety of pumpkin that takes 3 1/2 months to grow but you have a growing season that is about 2 1/2 months, that variety may not be ideal for growing in your area. You could cheat and start it inside and transplant once it gets warm to give it a head start. Be mindful that some varieties of vegetables may have a shorter maturity date, and you could get away with growing them in your area. Some varieties of peppers, tomatoes, squash, etc. will have a 75 day maturity date, versus anther type having a 100 day maturity date. Researching will show you what varieties grow best in your area.