Environment

Which states have the most invasive plant species?

My daughter Mona is a Ph.D. botanist. When she was in the ninth grade she said she was going to study horticulture and be a botanist. Mona loves plants. Whenever we go on vacation, she “botanizes,” checking out the plants, bushes, and tree and identifying them. When she was in the middle of doing her doctoral thesis on cape ivy, we took a trip to Spain and Portugal.

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