Pumpkins are perfect for fall science. They’re familiar, fun to explore with all five senses, and their life cycle shows how a tiny seed becomes a big fruit.
The pumpkin life cycle
- Seed: A flat, oval seed is planted in warm soil.
- Sprout: The seed germinates, and a small plant pushes up through the soil.
- Vine: The plant grows long vines with big leaves and curly tendrils.
- Flower: Yellow flowers bloom on the vine.
- Green pumpkin: After a flower is pollinated, a small green pumpkin forms.
- Ripe pumpkin: The pumpkin grows and ripens, and many varieties turn orange.
The seeds inside a ripe pumpkin can grow into new plants, so the cycle can begin again.
Parts of a pumpkin
- Stem: connects the pumpkin to the vine.
- Skin (rind): the tough outer layer.
- Pulp (flesh): the thick layer inside the skin.
- Fibers: the stringy “pumpkin guts” that hold the seeds.
- Seeds: can grow into new pumpkin plants.
- Leaves, vine and tendrils: parts of the plant that help it grow and climb.
Did you know?
Scientists call a pumpkin a fruit, because it grows from a flower and holds seeds.
Hands-on investigations
- Sink or float: Predict, then test whether a pumpkin floats.
- Measure: Use string to measure around the pumpkin and compare with classmates’ predictions.
- Count the seeds: Estimate first, then count in groups of ten.
- Observe: Use a magnifying glass to explore the inside and describe it with sense words.
Vocabulary
Seed, sprout, vine, tendril, blossom, pollinate, ripe and pulp.
Ready-to-use pumpkin science
For ready-to-use practice, our Pumpkin Life Cycle Worksheets: Parts of a Pumpkin Fall Science for K–1 are available on Teachers Pay Teachers.
