Certified Professional Horticulturist (CPH) Practice Exam

Which of the following is essential for successful container gardening?

1. Soil type and drainage

2. Sunlight and water quality

3. Frequency of watering

4. Temperature regulation

The correct answer is: Soil type and drainage

Soil type and drainage are critically important factors for successful container gardening. The right soil composition ensures that plants have the nutrients they need to thrive while also allowing for adequate drainage. Container gardens often experience different moisture conditions compared to ground gardens, as containers can dry out more quickly. Using a well-draining potting mix helps prevent water from pooling at the bottom, which can lead to root rot and other issues. The structure of the soil should retain some moisture while still allowing excess water to escape. This balance prevents plant stress and encourages healthy root development. In addition, the choice of container plays a role; materials and design can influence how well drainage occurs. Proper soil type and drainage practices are foundational for mitigating challenges associated with watering and nutrient availability, which are crucial for container gardening. Other factors like sunlight, water quality, watering frequency, and temperature are also important, but they build upon the essential groundwork established by soil type and drainage.