Aeonium Firecracker selenicereus GT Silica can be added

GT Silica can be added to any GT fertiliser or used by itself to protect and strengthen plants

so in this sense it can be considered hardy

but with a hint of sweetness from the kumquat

Fruit is produced on the stems from the previous year

From: Pirineos

Aeonium Firecracker selenicereus GT Silica can be addedAeonium 'Firecracker' is a beautiful succulent that grows into a small mound of short branches that end in rosettes of colorful, lance shaped leaves with ciliate margins. As it matures, the plant can become quite open in structure, reaching a height of up to 12 inches (30 cm). The rosettes can grow up to 4 inches (10 cm) in diameter. Depending on the season and growing conditions, the color of the leaves changes, ranging from green in winter to dark