Allamanda and Mandevilla: Indignant that you would even confuse them.

Tropical lookalikes. Top photo features the stately Allamanda. Bottom photo: The irrepressible Mandevilla. So what's the confusion? Allamanda and Mandevilla are basically the same plant, right? No way, and they can't believe you would even say that. If you look past your first immediate impressions -- bright yellow blooms, viney…

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