There are many factors that play into the growth of a pumpkin. The main two are: The temperature of your growing area and the amount of light that you get and the temperature plays a major role in the growth of your pumpkin.
If the temperature of your growing area is too high, the pumpkin will be slow to grow and the stem will be weak. If it’s too low, the pumpkin will grow quickly but the stem will be weak. If the temperature is right, the pumpkin will grow at a steady pace and the stem will be strong.
You can find the soil temperature using a thermometer or by feeling the soil. The best way to do this is with your hands. Using your hands, feel the ground where you planted the pumpkin seeds. If you feel hot ground, it means the soil is too warm. If it’s cool, it’s too cold.
If you’re growing pumpkins from seed, make sure to check the soil temperature often and adjust accordingly.