Limit watering as part of care for Senecio blue chalk sticks. Allow periods of dryness between waterings. Fertilize with low-nitrogen plant food, diluted or use a succulent plant food for container plants. Some recommend a weak compost tea fertilizer for succulent plants. Cut back in late summer, if needed. Propagate more blue chalk sticks from cuttings for another display. This blue-green plant is deer and rabbit resistant and appears to survive fire as well.
Read more at Gardening Know How: Growing Blue Chalk Sticks: How To Care For Senecio Blue Chalk Sticks https://www.gardeningknowhow.com/ornamental/cacti-succulents/senecio-chalk-sticks/growing-blue-chalk-sticks.htm
Senecio is one of my favorite succulents.