How to Draw an Onion Step by Step Tutorial

This step by step tutorial shows how to draw an onion with fairly easy line drawing examples that also teach a good overall approach to drawing.

Onion drawing step by step
Onion drawing step by step

An onion is a fairly interesting looking vegetable so even a basic line drawing as the one in this example can still look fairly nice once finished.

Step 1 – Draw a the Construction Lines for the Onion

Onion starting construction line drawing
Onion starting construction line drawing

Start the onion drawing by making a straight line through the center of your drawing area (what will later be the middle of the onion). Next draw an oval that will act as the basis for the onion bulb.

Step 2- Add Construction Lines for the Leaves & Roots

Onion construction line drawing
Onion construction line drawing

Add some lines to indicate the top and bottom tips of the bulb as well as the general growth direction of the leaves and roots.

Step 3 – Draw the Outer Shape of the Onion Bulb

Onion bulb outer shape drawing
Onion bulb outer shape drawing

Based on the construction lines from the previous steps draw the organic shape of the onion bulb by adding the smaller curves and tweaking the shape where needed.

Step 4 – Draw the Leaves

Onion leaves drawing
Onion leaves drawing

Draw the leaves fanning out from the bulb. Try and draw each one pointing in a slightly different direction with varying curves to make them look natural.

The onion leaves will generally be wider towards the base and narrower towards the top.

Draw the onion skin around the bottom of the leaves with sort of pointy irregular shapes.

Step 5 – Draw the Roots

Onion roots drawing
Onion roots drawing

Draw the onion roots in smooth curves with pretty much the same thickness through their entire length. You will want to draw quite a few of them for the onion to look natural.

Step 6 – Add the Details &Finish the Drawing

Onion drawing
Onion drawing

To finish the drawing you can simply add a series of lines that onions tend to have going between the bottom and top of the bulb. These lines should sort of “hug” the shape of the onion. If you look at an actual onion these lines will appear to be farther apart towards the middle and closer together towards the sides due to the curve of it’s shape. The lines will also appear to have wider curves as they progress towards the sides. Try and draw each line in a smooth transition from the previous line so that there is no big jumps from a small curve to a large one. The most outer curves should pretty much trace the shape of the sides of the onion.

The lines on each side don’t need to be perfectly symmetrical and can vary in length. You can also adds a few breaks in the lines (as was done in the middle line in the example) to make them look more natural.

Once done you should be finished with the tutorial.

Conclusion

Making a line drawing of an onion can be very simple but even for more basic drawings it’s still good practice to start with a construction line sketch and draw in the order of largest to smallest.

For an explanation of good drawing practices see:

Beginner Guide to Learning to Draw

For more similar tutorial check the tutorial page:

Easy Drawing Tutorials for Beginner & Intermediate Artists