Senecio serpens, commonly known as Blue Chalksticks, is a striking succulent prized for its unique blue-green foliage and trailing habit. Native to South Africa, this drought-tolerant plant is an excellent choice for rock gardens, succulent arrangements, and containers.

**Size:** Blue Chalksticks typically grows to a height of 10 to 15 centimeters and spreads about 30 to 45 centimeters wide, forming dense mats or cascading over edges.

**Growing Tips:**
1. **Light:** Plant Blue Chalksticks in a location that receives full sun to partial shade. It thrives in bright, indirect light but can tolerate some shade, particularly in hot climates.

2. **Soil:** Well-draining soil is crucial for Blue Chalksticks. It prefers sandy or gritty soil with excellent drainage and a slightly acidic to neutral pH.

3. **Watering:** Allow the soil to dry out between waterings, as Blue Chalksticks is highly drought-tolerant. Water sparingly, particularly during the winter months, to prevent root rot.

4. **Fertilization:** Blue Chalksticks is not heavy feeders and generally does well without regular fertilization. However, you can apply a diluted succulent fertilizer sparingly in spring to promote healthy growth.

5. **Pruning:** Minimal pruning is required for Blue Chalksticks. Trim back any dead or damaged foliage to maintain its tidy appearance and encourage new growth.

6. **Propagation:** Blue Chalksticks can be easily propagated from stem cuttings. Simply cut a healthy stem and allow the cut end to callus before planting it in well-draining soil. Keep the soil lightly moist until roots develop.

7. **Pests and Diseases:** Blue Chalksticks is relatively pest and disease-resistant. However, overwatering can lead to root rot, and poor air circulation can encourage fungal diseases. Ensure good airflow around the plant and avoid overhead watering to prevent issues.