Grown usually as a ‘filler’ this particular Senecio is great as a low growing shrub. A lot of collectors will grow this plant as it has a habit of ‘cresting’ quite easily (this is caused by a deformity when the plant is actively growing). The crested version of this plant is sold as ‘mermaid’s tail’ as it has a tail-fin like appearance.
As for pests, I have not found any pests to date on my Vitalis. The plant can get a little ‘pouty’ sometimes. I’ve noticed that when it receives a good amount of rain it will stand strong and tall however, after a few days when the sun re-appears, it will start drooping and appear to be dying, there is no need for alarm as this state will only last a day or two. It may appear to be thirsty but don’t be fooled, watering it again will only encourage rot!