FFA Floriculture Practice Test

Which characteristic is common among most indoor foliage plants?

1. Requirement for full sunlight

2. Preference for high humidity

3. Tolerance to cold drafts

4. Need for frequent watering

The correct answer is: Preference for high humidity

Indoor foliage plants often prefer high humidity levels because many of them originate from tropical environments where they naturally thrive in moist conditions. In indoor settings, where the air may be drier—especially in heated or air-conditioned spaces—these plants can benefit greatly from increased humidity. High humidity helps prevent issues like leaf browning and dropping, which can occur when the air is too dry. While some indoor plants may require full sunlight or have varying tolerances to cold drafts, these characteristics are not as universally applicable across most indoor foliage plants. Additionally, the need for frequent watering can vary significantly among different species of plants, as some may prefer to dry out between waterings while others may need consistent moisture. Thus, the preference for high humidity is a more consistent trait among a majority of common indoor foliage plants, making it the most fitting characteristic.