Adromischus marianiae var. herrei (often written as forma herrei) is a highly sought-after, dwarf succulent native to South Africa and Namibia. It is celebrated for its otherworldly leaves, which are heavily textured with bumps and ridges, clustering together to resemble "dried raisins" or sculpted, colorful pebbles.
Plant Facts
Growth Habit: Very slow-growing and compact. It typically reaches only 2 to 4 inches in height.
Appearance: Small subshrub. Leaves vary from nearly spherical to elongated, ranging in color from deep green to vibrant purple, aubergine, and red.
Texture: The warty, rough, and bumpy surface is the plant's defining feature.
Roots: Forms a tuberous, water-storing root system that helps it endure extended droughts in its native, arid habitat.
Flowers: Produces small, modest tubular flowers (green with pinkish-red edges) on tall, slender stalks in late spring or summer.
Key Care Requirements
Soil: Requires a highly porous, well-draining mix. Use a 50-70% mineral blend containing pumice, coarse sand, or perlite.
Watering: Water deeply, but allow the soil to dry out 100% between waterings. During summer dormancy, drastically reduce watering to just a light misting or very infrequent hydration.
Light: Thrives in bright, indirect to direct sunlight. High light exposure naturally triggers and enhances the vibrant pink or red pigmentation.
Temperature: Protect from frost. It should be moved indoors to a sunny windowsill during cooler months.