Alnus jorullensis is an evergreen Tree growing to 25 m by 20 m at a fast rate. It is hardy to zone 7. The flowers are pollinated by Wind. It can fix Nitrogen. Suitable for: light , medium and heavy soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic soils and can grow in saline soils. It can grow in semi-shade or no shade. It prefers moist or wet soil. The plant can tolerate maritime exposure.
Moist soil habitats, such as stream and river banks, swamps and moist montane slopes, often in very dense stands, at moderate to high elevations.
Agroforestry Services: Crop shade Agroforestry Services: Nitrogen Management: Coppice Management: Standard Regional Crop Alnus jorullensis is a plant of tropical montane forests, where temperatures are cool, with abundant rainfall. They are also found in high-elevation, open, oak-pine and fir woodlands in Mexico. Grows best in a sunny position, but is somewhat shade tolerant. Prefers a heavy soil and a damp situation, but it succeeds in ordinary garden soil. Grows well in heavy clay soils. Tolerates very infertile sites. The tree responds well to coppicing. This species has a symbiotic relationship with certain soil micro-organisms, these form nodules on the roots of the plants and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. Semi-deciduous in cool climates.