Why is your hydrangea lighter green and veined on it's upper leaves?

Answer 1

It's the type of hydrangea you have (there are several different species) and those leaves (if they have small veins of white or lighter green than the whole leaf) is called 'varigated' and it's suppose to be like that. Also hydrangeas can turn out in different colors from faded blues to brilliant blues, pinks, whites, purples, etc., and it is all to do with the type of soil you have.

Answer 2

Lighter green color and veined upper leaves on a hydrangea can be signs of a nutrient deficiency, particularly iron or magnesium. Consider testing the soil pH to see if it's within the optimal range for hydrangeas, and adjust fertilization accordingly. It's also helpful to provide consistent watering and proper drainage to ensure the plant's overall health.