Rosemary/Petunias

Question

1) Why do petunias develop sticky leaves?
2) Does rosemary need fertilizing?

Answer 1

Petunias have naturally sticky leaves and stems, so don't panic, this is normal. As for fertilizing rosemary plants, I would actually recommend not fertilizing a rosemary. Rosemary and many drought tolerant herbs actually grow with a stronger and better flavor if not fertilized.