Most Hydrangeas have relatively large leaves that can lose lots of moisture, so are prone to drought stress. From spring to autumn, keep the soil consistently moist.
During hot weather, spray foliage with Yates Waterwise DroughtShield, which forms a clear film over the leaves and helps reduce moisture loss by up to 50%.
Once plants are established, feed regularly from spring to autumn with Yates Thrive Natural Roses & Flowers to promote healthy growth and lots of flowers.
The flower colour of some Hydrangeas can be influenced by soil pH (the acidity or alkalinity of the soil). Pink colour develops when the soil is alkaline (pH above 7) and blue develops in acid soil (pH 4.5–5.5). Pale purple or light blue flowers are produced when the soil is slightly acidic to neutral (pH 5.5–7). Learn how to test your soil pH here.
To promote pink flowers, make the soil more alkaline by applying Yates Hydrangea Pinking Liquid Lime & Dolomite. To promote blue Hydrangea flowers, make the soil more acidic by applying Yates Liquid Sulfur or apply Yates Hydrangea Blueing Liquid Aluminium Sulfate.
Hydrangeas with white flowers stay white.