🌱 Morphology
   Large-statured hybrid agave with relatively fast growth, forming a rosette approximately 1.5 m tall and up to 2 m in diameter. The leaves are long, fleshy, and gently arched, with a blue-grey colour and a more flexible silhouette than that of Agave americana. The margins have small, regularly spaced teeth, and the apex ends in a short greyish to reddish spine. It produces offsets with some ease, although fewer than some of its parent species, and may form a small colony over time.

🌍 Distribution, habitat and family
It has no known natural distribution, as it is a horticultural hybrid. It was described from material grown in Ludwig Winter's garden in Bordighera (Italy) and was later documented as an escaped cultivated plant on the Iberian Peninsula. The most frequently cited parental combination is Agave americana × Agave franzosinii, although the possible involvement of A. sisalana has also been suggested.
Family Asparagaceae · Subfamily Agavoideae · Tribe Agaveae · Notospecies Agave × winteriana A.Berger.

❄️ Temperature · USDA zone 9a
Tolerates minimum temperatures of up to −4 ºC for short periods and when the substrate is completely dry. Well-established adult plants can withstand approximately −8 ºC in very dry conditions, while young specimens are more sensitive to cold. Winter moisture considerably increases the risk of damage.

☀️ Lighting
Requires direct sun and abundant light to develop a compact rosette and retain the bluish colour of the leaves. A PAR radiation of 20–30 mol·m⁻²·day⁻¹ (DLI) is recommended.

💧 Growth cycle and watering
Growth occurs mainly in spring and summer. During the active period, water abundantly and allow the substrate to dry out completely before watering again. In autumn, watering is gradually reduced, and the plant is kept almost dry during winter. The combination of cold and moisture is particularly unfavourable.

🌸 Flowering
It is monocarpic: the main rosette flowers once and then dies, although the plant can perpetuate itself through its side rosettes. In cultivation, it may reach flowering maturity at approximately 15 years. The inflorescence rises to 5–7 m, highly branched, with clusters of pale yellow flowers measuring about 7–10 cm. Flowering occurs mainly during the summer and can continue for several months.

🌿 Nutrition
During active growth, Desert CHOICE® Succulents is recommended, especially for its supply of assimilable potassium and calcium. Potassium helps regulate water and increases tissue resistance to stress, while assimilable calcium helps maintain firm leaves and a structurally resilient rosette. It is not recommended to routinely add a specific flowering fertiliser to agaves.

🪴 Pot
Black pot measuring 40x40 cm

This is an inimitable xerophyte grown in Madrid in a high-tech square pot with substrate enriched with mycorrhizal fungi and biofungicides.