The image is of a rounded shape with a few spikes coming out like petals. At the top and a little to the left there is a little tuft of three spikes like blades of grass. The petal like spikes are on the sides and body of the round object.
This page shows the different variations of the Kohlrabi from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free.