Aloe microstigma

Dry interior habitats

Aloe microstigma is native to dry parts of southwestern Namibia and South Africa’s Cape region. It grows on open ground and rocky slopes across desert, dry shrubland and Karoo habitats.

It is widespread and common across much of South Africa, and many wild populations remain large and stable.

Supporting strong Aloe microstigma growth indoors

• Position: Give Aloe microstigma direct sun or the brightest indoor position available to keep the rosette compact and encourage flowering.
• Watering: Water deeply, then wait until the gritty mix is dry throughout before watering again. A large pot can stay moist deep in the mix after the surface already feels dry.
• Temperature: This species handles high heat very well. Keep container plants frost-free because the flowers are easily damaged by frost.
• Humidity: Low to moderate household humidity works well. Keep air moving around the leaves and water the mix directly.
• Potting mix: Use a sandy, gritty succulent mix with pumice and good drainage. A heavy pot helps keep the plant steady as the rosette gains weight.
• Feeding: Give a small dose of liquid succulent fertiliser when new leaves or flower stems are growing.
• Repotting: Repot in fresh mix when roots crowd the pot, drainage slows or the plant begins to rock in its pot. Keep the crown at the same depth after repotting.

Pests, dry leaves and rot in Aloe microstigma

• Scale appears on leaves or aphids gather on a flower stem: Both are common pests of this species. Keep the plant separate from nearby plants and clear visible insects. Treat scale or aphids with a suitable houseplant product following the label directions.
• Leaf edges show fresh chewing and the centre later begins to soften: Aloe snout beetle is a known pest of Aloe microstigma. Adults chew the leaves, and the larvae can tunnel through the crown and stem. Move it away from the rest of the collection and remove any beetles or larvae you can see. With a disinfected blade, cut away any rot until the crown and stem are firm and healthy. Dispose of the rotten pieces. If a treatment for aloe snout beetle is available, use it exactly as directed on the label.
• Leaves become thin and deeply wrinkled after the mix has dried fully: The plant needs water. Soak the dry mix completely and allow all excess water to drain.
• Soft dark tissue develops around the base: Rot has developed after the roots remained wet for too long. Take the plant out of its pot and cut out every soft, dark patch with a disinfected blade. Stop when the rest of the plant feels firm and healthy. Dispose of the rotten pieces and repot in fresh, dry gritty succulent mix.

Aloe microstigma is toxic to people and pets

• Keep this plant away from children, cats and dogs, and handle the leaf tips carefully.
• The leaf latex contains anthraquinone glycosides that can irritate skin and the digestive tract. Rigid tips and toothed margins can also scratch or puncture.
• Swallowing the latex may cause an upset stomach, while skin contact can cause irritation. Contact a veterinarian or medical professional if symptoms develop.

Aloe microstigma: name and meaning

Aloe comes through Greek aloe, an old name for the bitter plant juice, itself borrowed from a Semitic language. The epithet microstigma combines Greek mikros, meaning small, with stigma, meaning mark or spot.

Carl Linnaeus established the genus Aloe in 1753 in Species Plantarum, page 319.

Joseph Franz Maria Anton Hubert Ignatz Fürst zu Salm-Reifferscheid-Dyck first described Aloe microstigma in 1849 in Aloes Mesembr, volume 5, § 26.