Step 1: Understanding the Question:
The question asks for the description of the snowflakes themselves.
Step 2: Locating the Information in the Passage:
The middle of the poem gives a specific detail about the snowflakes.
Line 5: "The snowflakes are all different shapes and sizes"
Step 3: Final Answer:
The poem provides a direct and simple description: the snowflakes are not uniform; they vary in their shapes and sizes.