XGasterhaworthia 'Royal Highness'

xGasterhaworthia 'Royal Highness is a collectible intergeneric hybrid cultivar attributed to a cross between the genera Gasteria and Haworthia (together forming the nothogenus xGasterhaworthia), though its exact parentage is uncertain and the same plant is also widely traded under the name ×Gasteraloe 'Royal Highness'. It forms small, tidy rosettes of thick, firm, dark green leaves generously marked with raised white tubercles, blending the chunky solidity of its Gasteria parent with the finer, warty ornamentation of its Haworthia side.

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Description

'Royal Highness' grows as a compact, slowly offsetting rosette of stiff, triangular to tongue-shaped leaves. The leaves are noticeably thick and rigid — a trait inherited from Gasteria — with a firm surface densely dotted by pale, slightly raised tubercles that catch the light and give the plant its ornate, pebbled texture. Colour is typically a deep green, sometimes flushing darker or bronzing under bright light. Over time the plant clumps gently by producing offsets around the base.

Like other members of xGasterhaworthia, it is grown chiefly for foliage; flowers, when they appear, are small and tubular on a slender stalk and are of little ornamental consequence compared with the leaf patterning.

Cultivation

Care follows that of the parent genera Gasteria and Haworthia, and the genus overview covers the essentials. Grow it in a free-draining, mostly mineral mix and water only when the soil has dried, easing off in winter. These hybrids tend to inherit Gasteria's tolerance of shadier positions, but they also colour up well in brighter light and will take anything from light shade to fairly strong light; only intense, unfiltered summer sun on an unacclimatised plant is likely to scorch the leaves. See Watering and Repotting for general technique.

Being a named clone, 'Royal Highness' is kept true only by vegetative propagation — the offsets it throws around its base can be separated and rooted once they have a little size, and leaf cuttings are also possible, if slower. Seed will not reproduce the cultivar reliably. See Propagation — offsets and Propagation — cuttings.

See also

• xGasterhaworthia — the hybrid genus overview
• Gasteria · Haworthia — the parent genera
• Soil and potting mix · Watering · Propagation — offsets · Propagation — cuttings

References

Horticultural information for growing these plants as ornamentals. Always confirm plant identification and any handling, grafting, or safety advice against authoritative sources before acting.