Calibrachoa flower color

In Calibrachoa variety testing, color is classified by the primary color of the corolla, with additional notes recorded for vein color, throat color, and the presence of secondary tones. For double-flowered forms, visual assessment is conducted on the outer corolla lobes. RHS color charts are used for description; for varieties with changing color during the growing season, the predominant color is considered the key.

The stability of Calibrachoa pigmentation depends directly on growing conditions. Insufficient light levels reduce the brightness of red and purple tones by up to 40%, while overheating of the root zone in containers or imbalances in substrate pH, which cause iron deficiency, lead to the inhibition of pigment synthesis and general flower fading.