Euphorbia lactea var. f. cristata

Euphorbia lactea var. f. cristata, commonly known as the Crested Elkhorn, is a fascinating and ornamental form of the Euphorbia lactea. This succulent is prized for its unique, fan-shaped cresting that occurs due to a mutation in the plant. It is often used as a decorative houseplant or a dramatic addition to cactus and succulent gardens.

Morphological Characteristics:

• Stem: The plant features a main stem that mutates to form a wavy, fan-shaped crest which can vary in color from green to silvery-grey. This crested growth is where the plant gets its common name, as the undulating ridges resemble the horns of an elk.
• Leaves: Euphorbia lactea typically has small, sparse leaves that are early deciduous, meaning they fall off as the plant matures. The focus is mainly on the sculptural quality of the crested stem.
• Flowers: Like many euphorbias, the flowers are small and not particularly showy, often overshadowed by the striking appearance of the foliage and stems.
• Growth Habit: This plant is typically slow-growing and maintains a compact size, which makes it suitable for cultivation in containers or small garden spaces.

Ecological Preferences:

• Light: Requires bright, indirect light or partial sun. It can tolerate some direct sunlight, but in very hot climates, shade during the hottest part of the day helps prevent scorching.
• Soil: Prefers a well-draining cactus or succulent mix to prevent water retention and root rot.
• Water: The watering regimen should follow the "soak and dry" method, allowing the soil to completely dry out between waterings. Overwatering is a common issue and should be carefully avoided.
• Humidity: Tolerates a range of humidity conditions but does not require high humidity. Average indoor humidity levels are adequate.
• Temperature: It prefers warmer temperatures and is not frost-hardy. Ideal temperatures are between 60°F to 80°F (16°C to 27°C).

Additional Care Tips:

• Fertilization: Feed sparingly; a diluted cactus fertilizer can be used once in the spring and once in the summer.
• Pest Management: Watch for pests like mealybugs and spider mites. Treat infestations with appropriate insecticidal soaps or neem oil.
• Handling: It is important to handle this plant with care as the sap can be irritating to the skin and is toxic if ingested.

Euphorbia lactea var. f. cristata is a striking plant that adds a dramatic flair to any setting. Its care is straightforward, aligning with general succulent care practices, making it a suitable choice for those new to succulents or looking for a low-maintenance but visually impressive plant.