Just Because Southern Magnolia
Watering: Water every 4-5 days depending on weather/environment. Sun:Plant your magnolia in full sun. It will also grow in partial shade as long as it gets at least four hours a day of direct, unfiltered sunlight. Pruning: Pruning should be done during the growing season, after blooming.
Magnolias are moderately fast-growing trees. The southern magnolia grows in acidic, loamy, moist, sandy, well-drained and clay soils. Southern magnolia should be planted 2inches above surrounding soil. This will help the roots to grow downwards. If planted too deep roots will grow towards the surface, creating a tree that is less stable. It can take 4 years to develop an established root system. Water and apply 3-5 inches of mulch around base to prevent weeds. Mulch should be kept at least 1inch away from stem.
If not already planted into the ground, keep in a pot/container. The Magnolia can be kept indoors until ready to plant in early Spring. Keep in an area of full sun/partial shade, water as needed.
Potting & Container
Southern Magnolias can be grown in a container and transplanted into the ground in late winter/early spring. If keeping in a container, use a 3 gallon for the first 6-12 months.Increase container size as tree grows. Container-grown plants should be transplanted in spring or fall, mulched, fertilized at planting, and well-watered. Avoid fertilizing the tree during its slowest time of growth in fall and winter. Continued watering and mulching is required for successful establishment.