My gardenias are green on top and all woody underneath. Are you able to provide any suggestions to help.
Prune it back by one third all over, into a softly rounded shape, then fertilise with a liquid flowering plant food such as Thrive Natural Roses & Flowers Concentrate:
This will mean you forgo some summer flowers this year, however recovery will be quick as we're in the growing season now.
From then on, prune it back every year as soon as the flowers have finished, and fertilise every spring, summer and autumn with:
Answered: 10 Dec, 2020