FFA Floriculture Practice Test

In growing potted chrysanthemums, what is the desirable temperature range for flower bud initiation at night?

1. 55-58 degrees F

2. 62-65 degrees F

3. 68-70 degrees F

4. 70-75 degrees F

The correct answer is: 62-65 degrees F

The desirable temperature range for flower bud initiation in potted chrysanthemums at night is typically between 62-65 degrees Fahrenheit. This specific temperature range is crucial because chrysanthemums are sensitive to temperature variations, which can directly impact their growth and flowering processes. At night, cooler temperatures help to stimulate the physiological processes that lead to bud formation. If the temperature is too low, it can slow down these processes, while temperatures that are too high may promote excessive vegetative growth at the expense of flower development. The range of 62-65 degrees Fahrenheit strikes a balance that encourages the plant to transition into the reproductive growth phase, ensuring successful bud initiation and subsequent flowering. Understanding the importance of this temperature range allows growers to optimize conditions for their chrysanthemum crops, leading to healthier plants and better yields.