Pumpkins are perfect for hands-on fall plant science! Cut one open and kids can observe the parts of a pumpkin, learn what each part does, and use a free printable pumpkin diagram to label what they discover.
This simple pumpkin anatomy activity works well for classroom science, homeschool, or a fall science center and pairs naturally with our pumpkin science experiments.
Field: Life Science, Plant Biology
Grades: K–3, easily adapted for preschool and older students
Concepts: Plant Structure, Fruit Anatomy, Seeds, Observation, Classification
Free Parts of a Pumpkin Worksheet
Use our free parts of a pumpkin worksheet and pumpkin diagram while exploring a real pumpkin.
Kids can identify and label:
- Vine
- Stem
- Skin
- Flesh
- Pulp
- Seeds
👉 Get the Free Pumpkin Parts Coloring Page and Worksheet (includes leaves and apples too!)
Learn the Parts of a Pumpkin
A pumpkin is a fruit that grows on a vine. Like other fruits, it has different structures that help protect the seeds, support growth, and allow the plant to reproduce.
One of the easiest ways to learn pumpkin anatomy is simply to investigate a real pumpkin from the outside in.
Kids can look closely at the stem and skin before cutting the pumpkin open to explore the flesh, pulp, and seeds inside.
Supplies
- Whole pumpkin
- Knife or pumpkin-cutting tool for adult use
- Large spoon or scoop
- Free Parts of a Pumpkin Worksheet
- Magnifying glass, optional
- Paper towels
- Markers or crayons
Parts of a Pumpkin Activity
- Observe the Outside: Start by looking closely at the whole pumpkin.
Have kids notice the:
- Stem
- Skin
- Ribs
- Vine, if still attached
💡 Ask them to describe the pumpkin’s color, shape, size, and texture.
2. Cut Open the Pumpkin: Have an adult carefully cut the pumpkin in half or remove the top. Before scooping anything out, take a moment to observe what is inside.
🔎 What do kids notice first?
3. Explore the Inside: Use a spoon or your hands to investigate the pumpkin’s pulp and seeds. Separate a few seeds from the stringy pulp and examine them with a magnifying glass if you have one.
4. Identify the Pumpkin Parts: Use the printable pumpkin diagram to find and label:
- Vine
- Stem
- Skin
- Flesh
- Pulp
- Seeds
5. Draw and Label: Finish the activity by having kids color the printable or draw their own pumpkin cross-section and label it.
What Are the Parts of a Pumpkin?
Here are the main parts of a pumpkin and what each one does.
- Vine – The long plant stem that grows along the ground. Pumpkins develop from flowers that grow along the vine.
- Stem – The firm part at the top of the pumpkin that once connected the fruit to the vine.
- Skin – The tough outer covering that helps protect the pumpkin.
- Flesh – The thick layer beneath the skin. This is the part commonly used for cooking.
- Pulp – The soft, stringy material inside the pumpkin that surrounds the seeds.
- Seeds – The structures inside the pumpkin that can grow into new pumpkin plants under the right conditions.
Pumpkin Anatomy Vocabulary
Kids may notice a few other pumpkin parts during their investigation.
- Ribs are the grooves that run from the top of the pumpkin toward the bottom.
- The blossom end is the area opposite the stem where the pumpkin flower was once attached.
🔎 Adding these words is an easy way to extend the activity for older elementary students without making the basic worksheet too complicated.
Is a Pumpkin a Fruit or a Vegetable?
Botanically, a pumpkin is a fruit because it develops from a flower and contains seeds. Pumpkins are a type of squash and belong to the same plant family as cucumbers, zucchini, melons, and gourds.
💡 This makes pumpkins a useful way to introduce plant classification along with pumpkin anatomy.
Explore a Pumpkin Like a Scientist
Instead of simply labeling the pumpkin parts, encourage kids to make observations and ask questions about what they see.
Try these guiding questions:
- What do you notice about the outside of the pumpkin?
- How does the skin feel?
- What do you predict is inside?
- Which part protects the inside of the pumpkin?
- Where are the seeds located?
- What does the pulp feel like?
- How are the flesh and pulp different?
- What part connects the pumpkin to the vine?
- What do you think would happen if you planted one of the seeds?
For older kids, compare two pumpkins and record the similarities and differences.
More Pumpkin Science Activities
Keep exploring pumpkin plant science and observation with these related activities.
- Pumpkin Investigation – Take a closer look at pumpkin pulp, seeds, textures, and other observable features.
- How Many Seeds Investigation – Compare a variety of fall fruits and seed counts
- Pumpkin Life Cycle – Follow how a pumpkin grows from seed to mature fruit.
- Pumpkin Decomposition – Observe what happens to a pumpkin as it breaks down over time.
- Pumpkin Sink or Float – Make predictions and test pumpkins and other fall objects in water.
- Pumpkin Science Experiments – Explore more pumpkin life science, chemistry, physics, and STEM activities.
Parts of a Pumpkin FAQ
What are the main parts of a pumpkin?
The main parts of a pumpkin are the vine, stem, skin, flesh, pulp, and seeds.
What is the stringy part inside a pumpkin called?
The stringy material inside a pumpkin is commonly called the pulp. It surrounds and holds the seeds.
What is the outside of a pumpkin called?
The outer covering is called the skin or rind. It helps protect the flesh and seeds inside.
What is the edible part of a pumpkin?
People commonly eat the flesh and seeds. The flesh is the thick part beneath the skin.
Is a pumpkin a fruit?
Yes. Botanically, a pumpkin is a fruit because it develops from a flower and contains seeds.
What is a pumpkin stem for?
While the pumpkin is growing, the stem connects the fruit to the vine. After harvest, the firm stem usually remains attached to the pumpkin.
Printable Pumpkin STEM Pack
Want more pumpkin science, STEM, math, and hands-on activities in one place?
Our Pumpkin STEM Pack includes printable pumpkin science investigations, engineering challenges, early math, plant science, and more.
👉 Explore the Pumpkin STEM Pack
More to Explore
Pumpkin Science | Pumpkin Life Cycle | Fall Plant Science | Fall Science | Pumpkin STEM
