Burnt leaves on Standard Gardenias

Question

I live in Adelaide and recently sprayed Gardenias with pesticide and white oil. They were positioned in the sun, and because we had temperatures in the low 20s, this has caused leaf burning. I have pruned them so no leaves remain. Will they return to healthy foliage again? I have recently given them Miracle Gro.

Answer 1

The leaves should regrow as long as the stems are still alive, but it will take some time.