The question says that:
The program shown below on the left draws a snowflake. It uses 33 code blocks. Can you re-write it so that it uses at least one function and less than 30 blocks.
How can I draw this using Blockly?
After some research I don't think recursive function is the solution in this case but in python I would try something like this
def drawLeaf(direction):
// Draw your leaf in this direction using your blocks code
for direction in [0, 72, 144, 216, 288]:
drawLeaf(direction)