I have some yellow spots on my Dracaena, see the first picture. The plant is getting a lot of light and looks really happy, exept these spots, there is also a little bit of sticky substance on the underside of the leaves near the stem, but I don’t see any scale. What is wrong?
The sticky spots are a characteristic of the species and are not a problem
The yellowing of the leaves is sometimes seen on older plants where the soil can no longer buffer the chlorine or chloramine commonly added to tap water. It can also be seen in plants under stress from overwatering
In both cases the initial stress is a fertile ground for virus fungus bacteria to take hold in the older leaves. Their by products kill cell tissue and cause the yellowing and bumps
- Using filtered water
- move to higher light
- consider watering less
- remove yellowing leaves
Most plants can out grow this problem if caught early.