Haworthia marxii Gildenh.
Accepted Scientific Name
Haworthia emelyae Poelln.
This succulent is native to South Africa. It is restricted to a few steep hill slopes near the Rooinek Pass in the Witteberg Mountains, south of Laingsburg in the Western Cape province.
Haworthia marxii is a small succulent that forms a solitary flattened rosette of very dark-colored swollen leaves with silvery-white longitudinal lines occasionally transversely connected, forming an interesting pattern. The rosette grows up 4 inches (10 cm) in diameter. Leaves are slightly scabrid, very dark blue-grey to purplish-black, mostly with small scattered silvery-white flecks between the lines, and occasionally the lines have opaque black flecks inside them. They are semi-erect and triangular when young, later spreading, recurved, becoming rather flat and keeled only near the tip, ending in an acuminate tip. Flowers are up to 0.6 inches (1.5 cm) long, white with dull green central nerve, and appear in summer. They are spirally arranged on a solitary, slender, up to 2 feet (60 cm) long raceme, including the peduncle.
In 2012 Bruce Bayer placed H. marxi under Haworthia emelyae.
The specific epithet "marxii (MARKS-ee-eye)" honors Gerhard Marx, a South African artist, author, amateur botanist, and succulent horticulturist.
How to Grow and Care for Haworthia marxii
Light: Place the potted plant in a bright area with some protection from the hottest rays of the day. White, yellow, or red-tinged leaves usually indicate that your H. marxii receives too much sunlight. Deep shade tends to weaken the plant over a prolonged period. If your plant has spent the winter indoors, gradually move it outdoors into the bright sun to prevent sunburn.
Soil: Like all Haworthias, this plant does not like its roots to remain wet for prolonged periods, so the soil should be well-drained. Use a commercial potting mix for succulents or make your own.
Temperature: This succulent likes warmer temperatures in the summer but cool in the winter. However, it does not like being too cold. H. marxii can withstand temperatures as low as 30 °F (-1.1 °C). USDA Plant Hardiness Zones 10a to 11b, 30 to 50 °F (-1.1 to 10 °C).
Watering: In spring and fall, when the growth is most active, water H. marxii thoroughly, then wait until the top of the soil dries out before watering again. Water your plant less during the winter when its growth slows down significantly. During the hottest summer months, when this plant is mostly dormant, water just enough to keep the leaves from shriveling.
Fertilizing: H. marxii does not require much fertilizer. However, for optimum growth, fertilization is a good idea. Feed only with a dilute fertilizer and only during the active growing season.
Repotting: This slow-growing succulent can stay in the same pot for years. To keep your plant healthy and happy, repot H. marxii into fresh soil every two to three years in spring or fall. Repotting time is also the time to take offsets for propagation.
Propagation: Since it is a plant with a solitary growth habit, H. marxii can be propagated only from seeds. Sow seeds in spring or fall in a well-draining soil mix.
Learn more at How to Grow and Care for Haworthia.
Toxicity of Haworthia marxii
H. marxii is considered non-toxic to humans and animals.
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