How to Grow Magnolia in a Container

Locate a large plant pot that is 24 inches or larger in diameter and has drainage holes. Consider using a fiberglass or plastic planter, which is lighter and easier to move later if needed. If no holes exist, drill them using a ½-inch drill bit and making two holes for every 12 inches of space.

Place the planter in the final resting location, since it will weigh more once planted. Choose an area with full to partial sunlight, which magnolias require for blooming.

Mix the soil in a wheelbarrow by adding one part of compost, one part of peat moss and one part of sand. Place the mixture into the planter until it is half-full.

Remove the magnolia from the nursery pot and insert the roots into the planter, centering it. Examine the top of the root ball, which should be 1 inch from the top rim of the planter. If needed, add more soil under the root ball.

Add more soil around the sides of the magnolia until all roots are covered.

Water the soil in the pot until it begins to drain out of the bottom. After planting water as needed when the top 1 inch of soil dries out. Potted magnolias require more frequent watering than ground planted ones, often every two to three days.

Fertilize the magnolia in the late spring using a liquid fertilizer that is acidic, such as those for azaleas or rhododendrons. Apply the amount indicated on the bottle for one plant. Reapply the fertilizer in early summer.

Remove the dead leaves and flower petals that fall into the base of the pot on a regular basis and compost them or discard them in the trash. If not removed, these materials can cause fungal disease or insects.