Aloe marlothii, also known as the Mountain Aloe or Spiny Aloe, is a large and impressive succulent native to southern Africa. This striking plant forms a single, robust rosette of thick, fleshy, grey-green leaves adorned with prominent reddish-brown spines along their margins and sometimes on the leaf surfaces. Its bold architectural form and vibrant orange-red flower spikes make it a dramatic addition to arid and succulent gardens.
 
Key Features of Aloe marlothii
Large Solitary Rosette: Forms a single, substantial rosette of fleshy leaves.
Grey-Green Leaves: Leaves are typically a grey-green color.
Reddish-Brown Spines: Leaf margins are lined with prominent reddish-brown, sharp spines, and spines may also appear on the leaf surfaces, particularly on younger plants.
Impressive Size: Can grow to be quite large, with rosettes reaching several feet in diameter and height.
Tall Flower Spikes: Mature plants produce impressive, branched flower spikes that can reach several feet tall, bearing numerous bright orange-red tubular flowers.
Architectural Form: Its large, spiny rosette creates a dramatic and architectural silhouette.
 
Care for Your Aloe marlothii
Light: Thrives in full sun. Ample sunlight is crucial for healthy growth and vibrant flowering.
Soil: Requires well-draining soil to prevent root rot. A sandy or gravelly soil mix is ideal.
Watering: Water deeply but infrequently, allowing the soil to dry out completely between waterings. Aloe marlothii is drought-tolerant and susceptible to overwatering, especially during cooler months.
Temperature: Prefers warm temperatures and is tolerant of heat. It is not frost-tolerant and needs protection from freezing conditions.
Humidity: Adapts well to low humidity and prefers dry conditions.
 
Maintenance for a Thriving Aloe marlothii
Removing Dead Leaves: Regularly remove any dead or dried leaves from the base of the rosette. Be cautious of the sharp spines when handling.
Repotting (if container grown): Young plants may need repotting every few years as they grow. Mature specimens in the ground generally do not require repotting. If container grown, choose a large, sturdy pot with good drainage.
Pest Control: Generally quite resistant to pests, but monitor for common succulent pests like scale or mealybugs, and treat if necessary.
Fertilizing: Typically does not require regular fertilization. A light application of a balanced fertilizer in the spring can be beneficial for young or container-grown plants.
 
Propagation Methods for Expanding Your Collection
Seed: Can be propagated from seed, although this is a slower process. Sow seeds in well-draining soil in a warm environment.
Offsets (rare): Unlike some other Aloe species, Aloe marlothii typically does not produce many offsets. If any small pups appear at the base, they can be carefully removed once they have developed their own roots. Handle with care due to the spines.
 
Aloe marlothii is a magnificent and relatively low-maintenance succulent that brings a bold, architectural presence to any arid or succulent garden. Its impressive size, spiny foliage, and vibrant flower spikes make it a truly captivating specimen plant.
 
 
* Picture and information intended only as a guide. Size and colours of plants will vary, not any 1 plant is exactly the same and minor variations will occur.
 
** All plants will be posted bare rooted.