Fraxinus angustifolia aka Narrow Leaved Ash

Fraxinus angustifolia, also known as narrow-leaved or narrow-leafed ash, is a medium-sized deciduous tree that is native to central and southern Europe, northwest Africa, and southwest Asia. It can grow up to 20-30m tall with a trunk up to 1.5m in diameter. The bark is initially smooth and pale grey on younger trees, but becomes square-cracked and knobbly on older trees. The buds are pale brown, which makes it easily distinguishable from its related species Fraxinus excelsior even in winter. The leaves are in opposite pairs or whorls of three, pinnate, 15-25cm long, with 3-13 leaflets that are distinctively slender, 3-8cm long and 1-1.5cm broad. The flowers, which appear in early spring, are produced in inflorescences that can be male, hermaphrodite or mixed male and hermaphrodite. The fruit is a samara 3-4cm long, with a pale brown wing 1.5-2cm long. Fraxinus angustifolia is invasive in the southern United States. Desert Ash, which belongs to the Fraxinus genus, is a super rare houseplant native to Europe and Northwestern Africa. It prefers long-lasting, direct light and should be less than 1 foot from a window. In terms of soil, Desert Ash likes well-draining soil and repotting each time it doubles in size is sufficient without requiring added fertilizers. It needs regular watering to thrive.