Which minerals in hard water are primarily responsible for harming roses and other cut flowers?

Which minerals in hard water are primarily responsible for harming roses and other cut flowers?

• A. Sodium and Chloride
• B. Potassium and Magnesium
• C. Calcium and Potassium
• D. Magnesium and Calcium

Answer: (D)

Hard water affects cut flowers mainly because of the minerals calcium and magnesium. These two ions cause water hardness and can deposit on stems and in the vase solution, which hinders water uptake and disrupts nutrient balance in the flowers. Sodium and chloride relate more to salinity stress, not the primary hardness issue, and potassium is a key nutrient rather than a defining hard-water mineral. So the minerals responsible for the problems seen in roses and other cut flowers are calcium and magnesium.

Hard water affects cut flowers mainly because of the minerals calcium and magnesium. These two ions cause water hardness and can deposit on stems and in the vase solution, which hinders water uptake and disrupts nutrient balance in the flowers. Sodium and chloride relate more to salinity stress, not the primary hardness issue, and potassium is a key nutrient rather than a defining hard-water mineral. So the minerals responsible for the problems seen in roses and other cut flowers are calcium and magnesium.