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Coral Aloe
Aloe striata
SA tree number
English: Coral Aloe, Broad-leaved Coral Aloe, Striated Aloe, Orange Aloe
Afrikaans: Koraalaalwyn, Streepblaaraalwyn, Oranjeaalwyn, Blouaalwyn
Xhosa: Umhlaba
Historical scientific names: Aloe hanburyi, Aloe rhodacantha
Aloe striata, commonly known as the Coral Aloe or Broad-leaved Coral Aloe, is a beautiful and highly sought-after indigenous stemless or short-stemmed aloe, endemic to the Eastern Cape. It is renowned for its distinctive broad, smooth, relatively spineless leaves that are strikingly striped or "striated" with pale green lines, often tinged with pink or coral-red, especially in cold or dry conditions, and topped by vibrant coral-pink to orange-red flower spikes.
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Distinguishing features:
Stemless or very short-stemmed, forming a large, solitary rosette.
Broad, flat, smooth leaves with no significant teeth (spines) on the margins (or only very minute, soft ones).
Leaves have distinctive pale green longitudinal stripes or bands (striations).
Leaf margins and often the entire leaf can take on beautiful pink, coral-red, or reddish-orange hues.
Produces tall, branched flower spikes (inflorescences).
Flowers are typically coral-pink to orange-red.
Overall appearance:
Aloe striata forms a stunning, solitary, ground-hugging rosette of broad, colourful leaves that are often tinged with coral or pink, especially in cooler weather. From the centre of this rosette emerges a multi-branched flower stalk, displaying an abundance of vibrant coral-coloured blooms.
Height:
The rosette of leaves typically grows 30-50 cm tall. The flower stalks can reach 0.5 to 1 metre tall.
Width:
The rosette can spread to a width of 50-80 cm.
Leaves:
The leaves are numerous, broad, flat, and strap-shaped, forming a dense, often flattened rosette at ground level. They are typically 30-50 cm long and 10-15 cm wide at the base. The colour is a striking blue-green to grey-green, with distinctive pale green or yellowish-green longitudinal stripes or bands running down the length of the leaf (hence "striata" meaning striped). The leaf margins are typically smooth and spineless, or with only very tiny, soft, whitish teeth that are not sharp. In full sun, or during cold/dry stress, the margins and often the entire leaf can develop beautiful coral-pink, rose-red, or reddish-orange tints.
Flowers:
The flowers are tubular, about 2.5-3.5 cm long, and loosely arranged on branched racemes (spikes). The inflorescence typically has 2 to 5 or more branches, forming an open, candelabra-like structure. The flowers are typically a vibrant coral-pink, salmon-pink, or orange-red, often with a paler base. The stamens are exerted (protrude beyond the petals). Aloe striata flowers are hermaphroditic, containing both male and female reproductive parts, so it is not dioecious.
Flowering season:
In South Africa, it primarily flowers in spring and early summer (around August to December), with its peak display often in September and October.
Fruits:
The fruit is a dry, three-lobed capsule that develops after the flowers are fertilised. It is typically oblong, 1.5-2.5 cm long, and splits into three valves when mature to release the seeds.
Seeds:
The seeds are small, flattened, and winged, typically 2-3 mm long, with a dark brown to black colour. The wings aid in wind dispersal.
Stem: Not applicable, as it is a stemless or very short-stemmed succulent perennial. The stem is largely subterranean or forms a very short, inconspicuous trunk at ground level.
Thorns:
Effectively spineless. The leaf margins are smooth or have only minute, soft, white teeth that are not sharp.
Roots:
It has a fibrous root system.
Soil type:
Requires excellent drainage. Thrives in sandy, gritty, or loamy soils. It is intolerant of heavy clay or waterlogged conditions, which can lead to rot.
Aspect:
Prefers full sun for best colouration of leaves and prolific flowering, but can tolerate very light partial shade in extremely hot climates. It is highly drought-tolerant. It is moderately frost-tolerant once established but can be damaged by severe or prolonged frost.
Edibility:
Not considered edible. While some aloe species have medicinal uses, Aloe striata is primarily ornamental and not used for food.
Toxicity:
Like many aloes, the sap contains anthraquinones, which can be purgative and irritating if ingested. While it lacks the sharp spines of other aloes, the sap can still cause mild skin irritation in sensitive individuals. Ingestion of any part of the plant can cause gastrointestinal upset.
Uses:
Highly prized as an ornamental plant in gardens, succulent collections, and containers worldwide due to its beautiful foliage, spineless nature, and spectacular flower display. It is excellent for xeriscaping (water-wise gardening), rockeries, borders, and as a focal point. Its relatively compact size makes it suitable for smaller gardens or container planting. It is used in hybridisation programs to develop new aloe cultivars.
Ecology:
The vibrant coral-pink to orange-red flowers of Aloe striata are highly attractive to various pollinators and nectarivores, particularly sunbirds (which are the primary pollinators) and bees. Its nectar provides a valuable food source during its spring flowering period. As a ground-hugging succulent, it contributes to soil stabilisation in its natural, often rocky or sandy, habitats.
Distribution and habitat:
Aloe striata is indigenous and endemic to the Eastern Cape Province of South Africa, with its natural range extending from near East London westward to the Willowmore area, and also occurring inland into the Karoo. It typically grows in dry, rocky areas, on stony hillsides, in open grasslands, and often on exposed slopes, indicating its preference for well-drained conditions.
Derivation of name:
The genus name Aloe is derived from the Arabic word "alloeh" or Hebrew "allal," meaning "bitter," referring to the bitter sap found in the leaves.
The species name striata is Latin for "striped" or "striated," referring to the distinctive longitudinal pale green bands or lines on its leaves.
Common names like "Coral Aloe" refer to the beautiful coral-pink/orange hues that its leaves and flowers often display. "Broad-leaved Coral Aloe" distinguishes it from narrower-leaved aloes.
Historical aspects:
Aloe striata has been a part of the Eastern Cape's natural landscape for centuries. Its unique beauty was quickly recognised by botanists, and it became a highly sought-after ornamental plant early on, being introduced to cultivation globally. Unlike Aloe ferox, it is not a commercially harvested plant for its sap, but its popularity in horticulture has led to some pressure on wild populations from illegal collection. It is therefore important to source plants from reputable, legal nurseries. Its easy cultivation and stunning appearance make it a fantastic water-wise choice for modern gardens.
Interesting facts:
This aloe is truly a "living jewel"! Its leaves are not just green; they're adorned with beautiful pale stripes, and in cooler weather, they blush with incredible coral, pink, and orange tones.
Unlike many other aloes, it's virtually spineless! Its leaves are smooth, making it much safer to handle and plant in gardens where children or pets might be present.
Its name, striata, means "striped" in Latin, referring to those unique lines on its leaves that make it so distinctive.
When it blooms, it sends up these magnificent branched flower stalks covered in vibrant coral-pink flowers, making it a showstopper in any garden!
Growing tips:
Propagation: Easily propagated from seed, which should be sown in sandy, well-drained compost. It does not typically produce offsets (pups) in the same way as clumping aloes.
Planting: Requires excellent drainage. If planting in heavy soil, amend heavily with sand, grit, or perlite. Plant in full sun for the best leaf colouration and flowering.
Watering: Very drought-tolerant. Water deeply but infrequently, allowing the soil to dry out completely between waterings. Be very careful not to overwater, especially in cooler, humid conditions, as it is prone to rot.
Frost Protection: Protect from severe or prolonged frost. In very cold areas, it's often grown in containers that can be moved indoors.
Feeding: Requires minimal feeding. A light application of a balanced, slow-release fertiliser once a year in early spring can be beneficial.
Maintenance: Remove spent flower stalks after blooming. Ensure good air circulation around the plant.
This plant is a fantastic alternative for:
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