🌿 Morphology

Perennial succulent with a low, branched habit, developing creeping or arching stems with ascending tips and numerous lax rosettes. It can reach approximately 20 cm in height, while the stems can spread laterally up to about 60 cm.

The leaves are fleshy, smooth, shiny, and elongated, ovoid to subcylindrical in shape, ending in a slightly pointed apex. The distinguishing feature of 'Firestorm' is its extraordinary coloration: the center of the leaf maintains yellowish-green or golden tones, while the margins acquire intense orange to fire-red hues. This contrast is especially marked with high light levels and cool temperatures.

The color is neither permanent nor uniform: in low light, green and golden tones predominate, while sun and cool temperatures significantly intensify the reddish pigments.

🌍 Distribution, habitat and family

Family: Crassulaceae.

'Firestorm' is a horticultural selection of Sedum adolphi created by Altman Plants in Vista, California, and subsequently introduced by Huntington Botanical Gardens through the International Succulent Introductions program as ISI 2014-32. It is not, therefore, a form that exists naturally in Mexico.

The species Sedum adolphi has a natural distribution restricted to central Veracruz, Mexico, where it grows as a succulent subshrub. The old name Sedum nussbaumerianum is considered a synonym of S. adolphi.

❄️ Temperature

USDA Zone: 9a–11b

It is a warm-climate succulent and should not be considered hardy to hard frosts. It can withstand occasional drops in temperature if kept completely dry and acclimatized, but cold accompanied by humidity significantly increases the risk of damage. The minimum temperature it could tolerate would be about -4°C

☀️ Lighting

Indicative PAR DLI: 15–25 mol·m⁻²·day⁻¹.

It needs plenty of light to maintain its compact habit and, above all, to properly express the characteristic coloration of 'Firestorm'. Direct sun or a very bright exposure is recommended, performing a progressive adaptation if it comes from a shaded environment.

Light intensity has a direct relationship with coloration: in low light, the leaves remain predominantly green and golden, while high radiation, especially combined with cool temperatures, intensifies the orange and red margins.

💧 Growth cycle and watering

Opportunistic. It shows growth mainly during periods of moderate temperatures, and can remain active during spring, summer, and autumn under favorable conditions. With low winter temperatures, its activity is notably reduced.

During the active period, abundant watering is recommended, allowing the substrate to dry out completely before watering again.

In winter, watering frequency should be greatly reduced, especially when temperatures drop. The substrate must remain dry between waterings and should never be kept saturated.

🌸 Flowering

Flowering occurs mainly between late winter and spring. The inflorescences appear at the ends of the stems and produce small white star-shaped flowers, which contrast with the golden, orange, and red foliage.

Under Madrid cultivation conditions, one can expect it approximately between February and April, although the exact timing will depend on temperatures and exposure.

🌿 Nutrition

During the active growth period, Desert CHOICE® Succulents is recommended, applied in moderation. An excess of nitrogen should be avoided, as it can cause overly vigorous growth, long internodes, and a loss of compact habit and chromatic intensity.

This is an inimitable xerophyte grown in Madrid in a technological square pot with the substrate activated with mycorrhizal fungi.

Basic collection pot of

9x9 cm

13x13 cm

16x16 cm