Certified Professional Horticulturist (CPH) Practice Exam

What is one of the key indicators of correct watering practices for plants?

1. Leaves are always wet and shiny

2. Soil remains consistently dry at all times

3. Soil feels moist but not waterlogged

4. Plants grow larger every season without care

The correct answer is: Soil feels moist but not waterlogged

One of the key indicators of correct watering practices for plants is that the soil feels moist but not waterlogged. This balance is essential because it indicates that the plants are receiving the necessary moisture to support their growth while also allowing for adequate airflow to the roots. If the soil remains too dry, it can lead to stress and hinder the plant’s ability to absorb nutrients. Conversely, if the soil is waterlogged, it can suffocate the roots and promote root rot, compromising the plant's health. Maintaining soil moisture that is just right ensures that plants can grow robustly and stay healthy. This condition allows for the uptake of water and nutrients without the risk of detrimental effects that come from extreme dryness or saturation. Proper watering practices, therefore, emphasize monitoring the moisture level in the soil rather than just focusing on visible symptoms or outcomes, such as the condition of the leaves or the rapidity of growth.