Red Seal Landscape Horticulturist Practice Exam

What is companion planting?

1. The practice of growing different plants together for mutual benefits like pest control

2. Planting species that share the same soil type

3. Growing only one type of plant for uniformity

4. A technique to enhance soil drainage

The correct answer is: The practice of growing different plants together for mutual benefits like pest control

Companion planting refers to the practice of cultivating different plant species in close proximity to one another to maximize benefits such as pest control, improved growth, or enhanced flavor. This method is grounded in the understanding that certain plants can have synergistic relationships, benefiting each other in various ways. For instance, some plants may repel pests that are harmful to their neighbors, while others can improve nutrient availability in the soil or provide physical support. This approach utilizes nature's interconnectedness, where the presence of one plant enhances the health and productivity of another, while also potentially minimizing the need for chemical pesticides or fertilizers. Additionally, companion planting can promote biodiversity in the garden, leading to a more resilient ecosystem. By contrast, options that focus on soil type, uniformity of planting, or drainage techniques do not encapsulate the essence of companion planting. These aspects may be significant in horticulture, but they do not specifically address the mutual benefits gained from growing different plants together, which is the central theme of companion planting.