Senecio crassissimus

The vertical leaf senecio, a plant native to Madagascar, thrives in dry conditions thanks to its exceptional drought tolerance. It requires minimal watering, about once every 2-3 weeks, and prefers well-drained, dry soil. As an evergreen, this plant retains its foliage throughout the year, making it an excellent choice for indoor environments with controlled humidity.

Vertical-leaf Senecio performs best in locations with abundant sunlight, though it can adjust to spots with reduced light. Native to areas with clear skies, it needs a substantial amount of light to grow well. Too much sun can cause scorching, while too little light often leads to weak, elongated growth.

The vertical leaf senecio plant prefers moderate temperatures, with optimal growth occurring between 20 to 38 ℃ (68 to 100.4 ℉). During summer, temperatures above 40 ℃ (104 ℉) can cause stress or damage and should be avoided. In winter, temperatures of 10 to 15 ℃ (50 to 59 ℉) can help the plant adjust to the colder season.

This plant prefers dry conditions, so don't mist it. However, watering it less often can also thrive in higher humidity.

Vertical leaf senecio only needs light applications of fertilizer once or twice a year during the growing season. Do not fertilize in winter or in summer when the plant is dormant. Use less fertilizer for plants that have been repotted, and wait a couple of months after repotting before you begin feeding. Fertilizing helps maintain healthy growth and promotes flowering.

When repotting Vertical leaf senecio, choose a pot slightly bigger than the current one that provides good drainage. Plant it in a gritty, well-draining succulent or cactus mix. Gently remove the plant from its old pot, brush off excess soil, and place it at the same planting depth. Hold off watering for a few days to allow any root damage to recover. Repot in spring or fall and keep it in a brightly lit spot.

Pruning is required to prevent the plant from becoming too thick and lanky. Remove any succulent leaves that have fallen to the ground or are touching other plants. Cut away any dead pieces of the stem with a sharp knife, following along where it bends. Cut stems at least halfway down to encourage new growth in the spring.

All Senecio plants are toxic. Ingestion can cause fatal liver disease in animals when eaten in large quantities over a long period of time. Wear gloves when working with the plants; the sap can cause severe irritation. Be careful when planting Senecio species if you have children, pets, or livestock.