Hydrangea Growing Poorly In Slightly Acidic Clay Soil

Question

Hydrangea anomala petiolaris growing poorly in slightly acidic clay soil where it used to grow well. Soil in recently concreted patio. What went wrong? We live in Pimlico, London was a marshy area but house and patio dates to 1850. What fertiliser should we use? Plants have been in the soil for 6 months .

Answer 1

Clay soil should be amended prior to planting to avoid the problems that it causes. You may be best to try worms! Earthworms can help increase the aeration in your soil, without harming your plants and digging them up.

Here are some articles that will help: https://www.gardeningknowhow.com/composting/vermicomposting