Associate Certified Entomologist (ACE) Practice Exam

Which of the following is a typical source of horticultural oils?

1. Sunflower and corn oil

2. Rosemary and mint

3. Olive and canola oil

4. Coconut and palm oil

The correct answer is: Rosemary and mint

Horticultural oils are typically derived from specific plant oils that are effective for pest control and garden health. Of the options presented, rosemary and mint are recognized for their natural insecticidal properties and are commonly used in horticultural applications. These essential oils can deter pests and have beneficial effects when used in diluted forms on plants. While sunflower and corn oil, olive and canola oil, and coconut and palm oil can be used in various applications, they are generally not classified as horticultural oils. Instead, they are more likely to be associated with food or cooking. The specific properties of rosemary and mint oils make them particularly effective in horticultural contexts, allowing for both pest management and promotion of plant health.