Cucurbitaceous crops usually grow vertically first and then horizontally. It takes about 20 days after flowering to grow vertically, and about 25 days to grow horizontally. I have heard that the base (of a plant or tree) berries that first appear in early spring are still cold, so they do not grow very long during the period when they grow vertically. By the time they stretch sideways, the temperature rises and they can stretch. Since the fruit that grows in the distance has a high temperature from the beginning, it can grow vertically and form a ball shape. If conditions are good in the latter half of the growing season, it will grow horizontally, and if conditions are good in the first half of the growing season, it will produce excellent agricultural products with strong vertical growth. The color of the pericarp is darker at the base of the plant and seems to get lighter as it gets further away. Pumpkins from the same production area have dark skins during the cold season, and become lighter as the temperature rises. In addition, it seems that the color of the pericarp may become pale when exposed to light.
Internode length also varies with climate. In such years, the gap between the knots of the pumpkin becomes shorter. In other words, all breeds tend to be flat. Conversely, the flattened years are dry and delicious. It seems that the fact that the buttocks are flat despite the pointed buttocks is proof that they are growing in a well-drained area. If you make it in a poorly drained place, it will not dry out and will not become flat.