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The yellow magnolia is a large deciduous tree, native to North America; it has a fairly rapid growth, and can reach an average of 10-12 m in height, there are ancient specimens up to 15-20 meters tall. The stem is erect, robust, with light and thin bark; the young trees have a pyramidal crown, which tends to widen and round over the years. The foliage of the Magnolia acuminata is light green, waxy and leathery, oval, 12-18 cm long; falls during the winter months. In spring it produces large, yellow-green, inconspicuous flowers, followed by large green fruits, which become red when ripe: these are clusters of seeds, covered with a fleshy pulp, and a fine down. In general the botanical species is not cultivated in gardens, some hybrid varieties are preferred, which produce large yellow flowers, more or less intense depending on the variety, delicately scented; there are many varieties available on the market, such as "Butterflies" or Elisabeth, with very showy golden flowers that bloom at the end of winter, when the plant is still without foliage. There are also varieties with variegated foliage. Majestic trees are generally cultivated as single specimens, in large parks or gardens.
The yellow magnolia plants are planted in a sunny place, they tolerate partial shade conditions; these trees originate from areas with a cold climate, so they do not fear the cold temperatures of the winter months. The more the climate of the place will be cold and continental, the more the magnolia acuminata will need sunny exposures to grow well.
They can withstand short periods of drought, although in general it is preferable to water the young specimens during the summer period, always waiting for the soil to be dry. In autumn and winter it is not necessary to supply water. The adult specimens are satisfied with the rains, although it may be necessary to water in case of very prolonged drought during the warm months.
They are grown in a soft and rich, well-drained soil, preferably with a tendency to acidity. In cultivation, the magnolia acuminata have been shown to be able to adapt to any soil, even calcareous or stony.
The multiplication of this species occurs by seed; you can proceed using fresh seeds in spring, or in the autumn; in both cases it is advisable to lightly scrape the seeds with sandpaper, to thin the cuticle that protects them from the cold and humidity, therefore they are placed on the surface of a good seeding soil, which must be kept moist until complete germination; the young plants are cultivated in pots until they reach 25-45 cm in height, so they are planted, preferably in spring.
The seedbed is ideal for germination and the first stages of life, after which the plant can be potted, as indicated above, or planted in the ground, where we want the plant to grow.
Yellow magnolia - Magnolia acuminata: Pests and diseases
The generic magnolia is a rustic plant although some species, especially if cultivated in extreme conditions and not ideal, fear the attack of aphids and cochineal.