Southern Magnolia Tree | How to Plant and Care

The Southern Magnolia tree (Magnolia grandiflora) is a historic evergreen tree native to the southeastern United States. Renowned for its flashy, fragrant white flowers and glossy green leaves, the tree is an icon of southern landscapes and public gardens. With the correct variety and some TLC, though, you can even cultivate this lovely specimen indoors.

Table of Contents

General Plant Information

Scientific NameMagnolia grandiflora
Common Name:Southern Magnolia tree
Plant TypeEvergreen tree
Native RangeSoutheastern United States
Growth Habit:Upright, broad-spreading canopy
Southern Magnolia Tree FlowerLarge, creamy white, fragrant; up to 12 inches across
LeavesDark green, thick, glossy with brown undersides
Blooming SeasonLate spring to summer
Full-Grown Tree HeightOutdoors, 60–80 ft; indoors, dwarf varieties grow to 6–12 ft in pots
Tree Size in Container:Typically 6–12 ft tall indoors when pruned and adequately cared for

Magnolia Varieties

The Southern Magnolia (Magnolia grandiflora) has several notable varieties and cultivars. Here are some of the different types:

Little Gem – This is a dwarf variety that typically grows to about 20 feet tall. It has a compact form, making it suitable for more miniature landscapes. The leaves are glossy green, and it produces fragrant white blooms.

little gem southern magnolia
Bracken Brown southern magnolia

Bracken Brown – Known for its attractive foliage and fragrant blossoms, this variety can grow up to 40 feet tall. It has a more upright growth habit and is often favored for its ornamental value.

Sweetbay (Magnolia virginiana) – This is a closely related species that can also be considered part of the magnolia family. It has thinner leaves and fragrant white flowers, and it prefers slightly wetter conditions.

Sweetbay (Magnolia virginiana)
  • Uptight – This is a narrow-growing variety, reaching about 35 feet tall with a tight, columnar shape, making it an excellent option for urban gardens where space is limited.
  • D.D. Blanchard – Renowned for its large leaves and showy flowers, this variety can reach heights of 60 feet. It is hardy and adapts well to various soil types.
  • Victoria – This cultivar features lush foliage and large flowers, usually blooming later in the summer. It’s an excellent choice for those looking for a dramatic, lush appearance in their garden.

Selecting and Buying a Southern Magnolia Tree

You have two choices when shopping for your tree:

  1. Purchase a small tree (1–3 feet tall), ideally a Little Gem cultivar already growing in a container.
  2. Grow from seed. Seeds for the Southern Magnolia tree are available. Still, please note that seedlings will be more than 10 years old before reaching maturity and may not exhibit the same characteristics as the parent tree, such as flower size or foliage quality.

Of course, an indoor tree will require some maintenance. Nevertheless, with patience and attention, your Magnolia should thrive and be a permanent addition to your residence.

If you’re new to this type of thing and want to see results sooner, consider purchasing a young Little Gem Southern Magnolia tree instead.

What You’ll Need

  • Big pot with good drainage (at least 18–24 inches wide)
  • Acidic plant potting mix with peat moss or pine bark
  • Organic acidic plant fertilizer
  • Watering can
  • Bright indoor location with plenty of light
  • Humidifier or humidity tray (especially helpful in the winter)

How to Plant a Southern Magnolia Tree Indoors

The initial procedure is selecting a proper potting container. Use a deep, broad container with drainage holes to prevent root rot. Young trees can be potted using an 18- to 24-inch-deep and diameter pot.

Soil-wise, Southern Magnolias prefer a slightly acidic mix with a pH range of 5.0 to 6.5. Plant them in an acid mix specifically designed for acid-loving plants, such as an azalea or camellia mix.

Add a layer of stones or gravel on the bottom of the pot for proper drainage. Fill it halfway with soil, then place the tree in the middle. Ensure the top of the root ball is level with the top of the soil. Fill around the tree with more soil and thoroughly water to help the roots settle.

Light Requirement for Indoor Southern Magnolia

Southern Magnolia trees require bright, direct sunlight to thrive indoors. Place your tree in a south- or west-facing window where it will receive at least six hours of direct sunlight each day. If your home doesn’t receive enough natural light, supplement with grow lights to help promote healthy foliage and flowering.

Temperature and Humidity for Indoor Southern Magnolia

Southern Magnolias prefer temperatures between 65°F and 75°F indoors. They can handle sporadic cool evenings but should also be shielded from drafts and dramatic temperature fluctuations. Place them where they are not next to a heat or cooling vent.

Humidity is also needed. Southern Magnolias prefer medium to high humidity. A pan of water or a humidifier placed near the plant can be used to maintain humidity in low indoor environments, especially during winter.

Watering for Indoor Southern Magnolia

Proper watering is crucial to keep your Magnolia healthy. Keep soil evenly moist but not soggy. You should water your tree whenever the topsoil feels dry to the touch. You may need to water more frequently in spring and summer. Water a little bit less in winter.

Drain excess water from the pot at all times. Root rot, a condition with which container-grown Magnolias are susceptible, is caused by standing water.

Fertilizing a Southern Magnolia tree

Feed your tree with an acid-loving, balanced plant fertilizer every six to eight weeks throughout the growing season (spring to early summer). Avoid fertilizing in winter, since this is when the plant naturally slows down its growth.

Pruning and Shaping a Southern Magnolia Tree

Pruning is also an essential part of maintaining a healthy and attractive Southern Magnolia tree indoors. It limits the tree’s size, encourages a bushier growth pattern, and removes any diseased or damaged branches. Prune after the bloom period, typically in late summer or early autumn. The tree has completed its major growth cycle at this time and is not as likely to suffer from the stress of pruning.

While pruning your indoor Magnolia, focus on preserving its natural appearance while ensuring it is proportionate in your indoor space. Begin by pruning dead, diseased, or damaged branches to promote better air circulation and overall plant health. Next, thin out crowded areas where branches are crisscrossing or competing for space, which helps maintain the structure’s balance. You may also lightly prune the branch tips to encourage denser foliage and a more compact shape.

Prune gradually and avoid removing too much foliage at once, as this can weaken the tree. Mild annual pruning will make your Magnolia tree both beautiful and manageable when brought inside. Prune using clean, sharp clean-up shears to make clean cuts, which reduces the chances of disease entering the plant.v

With routine pruning, your Little Gem Southern Magnolia tree will remain shapely and manageable in size.

Southern Magnolia tree in bloom,

Having your Southern Magnolia bloom in the house is a treat. To encourage them to bloom, the tree requires ample light, regular watering, and consistent humidity. Younger trees may take two years or longer to bloom, so patience is a must. Maintaining the entire plant’s health with proper care will significantly increase the potential of having its huge, fragrant blooms in the house.

Repotting and Long-Term Care

Repot Southern Magnolia every two or three years to renew the soil and provide space for root growth. Move to a pot two inches larger each time. Occasionally, lift the leaves and wipe them gently with a damp cloth to remove dust and preserve their natural luster.

Common Problems and Solutions in the Southern Magnolia Tree

ProblemCauseSolution
Yellowing leavesOverwatering or poor drainageImprove drainage and adjust watering
Leaf dropCold drafts, dry air, or inconsistent wateringStabilize the environment and humidity
Lack of bloomsInsufficient light or immaturityAdd more direct light and be patient

An indoor Little Gem Southern Magnolia typically reaches 6 to 12 feet in height with regular pruning. The overall size will depend on the pot and how diligently you manage growth.

Seasonal Care Calendar for Indoor Southern Magnolia Trees

It’s simpler to maintain your Southern Magnolia healthy and beautiful indoors when you are performing season-specific care. Here is a simple guide to make it effortless:

Spring

This is the start of the active growth period. Water increases as the tree begins to emerge from dormancy. Fertilize with an acid-loving, balanced plant fertilizer every 6 to 8 weeks. Watch for new growth and prune lightly after the main blooming period ends.

Summer

The tree is in full bloom and growing to its fullest potential. Provide a minimum of 6 hours of direct sunlight each day. Water regularly to provide even soil moisture. Monitor the humidity level — summer air conditioning can cause indoor air to become too dry. Mist leaves if needed, or use a humidifier.

Fall

Growth slows. Water when necessary, but reduce fertilization after early fall. Pruning and shaping can be accomplished now, as the tree prepares for winter. Watch for falling temperatures and keep the tree away from cold drafts.

Winter

The tree becomes dormant. Reduce watering somewhat — water only when the initial inch of soil is dry to the touch. Don’t fertilize at this time. Maintain the humidity and avoid placing the tree near heating vents or fireplaces, as these can also cause the tree to shed its leaves.

Repotting and Long-Term Care for Indoor Southern Magnolia Trees

Over time, your indoor Southern Magnolia tree will certainly grow beyond its container and require repotting. For the upkeep of a healthy tree and uniform growth, repotting and long-term care are essential.

Generally, you should repot your Southern Magnolia every two to three years. This allows the roots to have room to expand without becoming root-bound and enables the tree to receive new nutrients from fresh soil. If you repot, choose a pot slightly larger than the one it currently has. The pot is too large if it holds too much water, which causes root rot.

Plant it in fresh, well-draining potting soil specifically designed for acid-loving plants. When transplanting the tree from its original container, care for the root ball gently. Unpack any roots that may be packed too tightly and cut away any roots that seem damaged or dead. Water the tree thoroughly after transplanting and allow it to settle into its new container.

Other than repotting, long-term maintenance is through frequent care year-round. Clean the leaves often with a damp cloth to eliminate dust that can hinder light absorption and photosynthesis. Check for pests like scale or spider mites that sometimes attack houseplants. Treat them early if found with the appropriate solution.

Lastly, continue watching your tree’s lighting, humidity, and watering needs. As your tree matures indoors, its needs will be somewhat different, so staying vigilant will help it thrive for several years.

Often Asked Questions (FAQs)

Why Grow a Southern Magnolia Tree?

It is a pure pleasure bringing a Southern Magnolia inside. The evergreen leaves provide all-day, year-round greenery, adding beauty and warmth to any room. As a bonus, the vast, white, scented blooms, with a sweet fragrance, are a regular phenomenon during their blooming period. The tree also adds a warm, natural ambiance to modern living rooms, sunrooms, or bright entryways.

How big does a Southern Magnolia tree get indoors?

When planted with dwarf varieties such as the Little Gem Southern Magnolia tree, the tree will grow six to twelve feet indoors, depending on care, pruning, and the size of the container.

Should You Grow a Southern Magnolia Tree From Seeds?

Although it is feasible to cultivate a Southern Magnolia tree from seed, it is a sluggish and uncertain procedure. Seedlings can take over ten years to flower, and their traits can be unpredictable. For quicker outcomes and reliable beauty, buying a young Little Gem Southern Magnolia tree is the preferred option for indoor cultivation.

What are the advantages of growing a Southern Magnolia Tree indoors?

  • Grows to a manageable 6 to 12 feet tall indoors
  • Produces fragrant white flowers even at a young age
  • Maintains attractive foliage throughout the year
  • Performs well in large containers

How long does it take for a Southern Magnolia tree to flower indoors?

Even with optimal care, a Southern Magnolia tree grown inside may take one to two years to begin blooming as usual. Trees grown from seed can take ten years to bloom. Continuous care and waiting are required.

Is it difficult to care for a Southern Magnolia tree indoors?

Although Southern Magnolia trees must be tended to when it comes to light, water, humidity, and pruning, they aren’t all that difficult to care for within your home if you do the right things. Choosing the proper dwarf variety and placing it in a bright location will set you up for success.

Can I grow a full-size Southern Magnolia tree indoors?

It is not recommended to grow a mature Southern Magnolia tree in your house, as traditional varieties reach sixty to eighty feet high when planted outside. To cultivate indoors, always select dwarf varieties, such as Little Gem or Teddy Bear Magnolia.

Growing a Southern Magnolia tree indoors is a rewarding way to bring natural beauty and fragrance into your home. With the right variety, such as Little Gem, proper care, and some patience, you’ll be enjoying the dark green leaves and those characteristic creamy white blooms in your living room.

If you’ve been searching for “Southern Magnolia tree for sale,” “Southern Magnolia tree seeds,” or “Southern Magnolia tree in bloom,” now you have what you need to select, plant, and care for this delicate beauty indoors. With the right lighting, proper watering, and care, your indoor Southern Magnolia (Magnolia grandiflora) tree can be a lovely and long-lasting addition to your home.