Texas FFA Nursery Landscape Practice Exam

What is it called when seeds are exposed to winter cold and moist soil before germination?

1. Sporulating

2. Stratifying

3. Acidifying

4. Scarifying

The correct answer is: Stratifying

The process described is known as stratification. Stratification is a method that involves exposing seeds to cold temperatures for a specific period while they are in a moist medium, which mimics the natural winter conditions necessary for some seeds to germinate. This process is essential for seeds that require a period of cold to break dormancy and initiate the germination process effectively. Certain plant species have adapted to environments where their seeds need to endure winter before they can sprout in spring. By implementing stratification, growers can ensure a higher germination rate and more uniform growth among the plant seedlings. This method is crucial for the propagation of many perennials and woody plants that naturally germinate only after experiencing the right seasonal cues.