Final answer:
Mixing the primary color blue with the secondary color green, Whitney would create a tertiary color for her flowerpot, likely resulting in a shade of blue-green or teal.
Step-by-step explanation:
When Whitney decided to mix the colors blue and green to create a new color for her flowerpot, she would be creating a color that is categorized as a tertiary color. This is because tertiary colors are formed by mixing a primary color with a secondary color. In this case, blue is a primary color and green is a secondary color (which is itself made from the primary colors blue and yellow). Depending on the ratio of blue to green, Whitney might end up with a color leaning towards a blue-green or teal, which are examples of tertiary colors.