What describes the stem characteristics of the Common sunflower?

The characteristics of the stem of the Common sunflower are best described as purplish, fibrous, and sticky. This distinctive stem coloration can vary depending on the specific environment and the individual plant, but the purplish tone is a common identification feature. The fibrous texture contributes to the overall robustness of the stem, allowing it to support the height and weight of the large sunflower heads. Additionally, a sticky residue on the stem is often present due to the plant's natural secretions, which can deter herbivores and may also aid in water retention.

Recognizing these stem features is crucial for accurately identifying the Common sunflower in the wild, as they differentiate it from other plant species that may exhibit different stem characteristics.