Origin: a British horticultural hybrid raised by Claire Batten and Jeff Rowe, associated with Penberth Plants in Cornwall. Its parents are not documented.
Known names: ‘Logan Rock’.
Creation / commercialization date: reported as raised in 2011; presented at the Chelsea Flower Show in 2012.
Origin and history
Aeonium ‘Logan Rock’ belongs to the hybrids raised by Claire Batten and Jeff Rowe in Cornwall. Horticultural references also list it under Trewidden Nursery, reflecting the history of its breeders.
This cultivar was presented at the Chelsea Flower Show in 2012, where it was a finalist in the Plant of the Year selection. Its parentage remains unknown. A resemblance sometimes noted to Aeonium ‘Firecracker’ is a visual comparison and does not establish a relationship.
Botanical description
General description
Aeonium ‘Logan Rock’ is a compact, branching hybrid that gradually forms a mound of rosettes. Its foliage is not variegated: the leaves combine purple tones with greener rosette centers.
The elongated, pointed leaves spread around the center, giving the rosettes an open outline. The contrast between the darker outer leaves and young green central leaves is one of its main visual features.
Seasonal changes
The intensity of the purple and the extent of green vary with light levels and growth activity. Bright light encourages its colors, but a plant’s appearance does not remain identical throughout the year.
Tighter rosettes and slower growth during very hot weather should be interpreted in the context of growing conditions. Available observations do not establish a seasonal calendar specific to this cultivar.
Growth and branching
Its ability to branch allows it to form a mound rather than a long stem bearing a single rosette. This compact habit is one of the features valued in ‘Logan Rock’. Growth rate depends on exposure, climate and root activity; no sufficiently documented comparative measurements allow it to be quantified.
Particular sensitivities
No marked sensitivity specific to the cultivar ‘Logan Rock’ has been established in the information reviewed. It remains vulnerable to conditions generally unfavorable to aeoniums, particularly frost and persistent moisture around the roots.
Flowering
No flowering characteristics specific to Aeonium ‘Logan Rock’ have been documented in the sources retained. As with other aeoniums, a flowering rosette gradually dies after blooming, while nonflowering branches may continue to develop.
Growing conditions
☀️ Light
Provide plenty of light to maintain compact growth and encourage purple tones in the foliage. Acclimate gradually to direct sun and avoid scorching exposure when growth slows during very hot weather.
💧 Watering
Water during active growth once the mix has dried sufficiently. Reduce watering during the summer slowdown, taking account of how quickly the pot dries and the condition of the rosettes rather than following a fixed schedule.
🪨 Potting mix
Use an airy, well-draining mix in a pot with drainage holes. The mix should release excess water quickly without remaining saturated around the roots.
🌡️ Temperatures
Keep frost-free. Good ventilation and suitable exposure help limit problems during very hot periods. No specific minimum survival temperature has been sufficiently documented for ‘Logan Rock’.
Photographs of the cultivar
Known mutations of ‘Logan Rock’
Several variegated forms are associated with this lineage. The three forms below retain their collection labels; their dates of appearance and discoverers are not documented. These names are not synonyms of the original cultivar.
Growing reports on the site describe imperfect variegation stability in ‘Logan Rock variegata’. Offsets may show altered or reduced variegation. This observation concerns the variegated forms and cannot be assigned individually to each of the clones below.
Aeonium ‘Logan Rock Var 1’
A variegated form presented under the label ‘Logan Rock Var 1’. The numbering identifies the photographed plant without documenting its originator or date of appearance.
Aeonium ‘Logan Rock Var 2’
Another variegated form, presented separately as ‘Logan Rock Var 2’. It is retained as a distinct gallery entry; its precise relationship with the first form remains unclear.
Aeonium ‘Logan Rock Yellow Form’
A form presented as ‘Logan Rock Yellow Form’, a descriptive label referring to its yellow coloration. Its date of appearance and any relationship with the two preceding forms remain unknown.
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