The teddy bear magnolia (Magnolia grandiflora ‘Southern Charm’) is a beautiful ornamental tree prized for its showy, fragrant white flowers and lush green foliage. As a relatively slow-growing tree, the teddy bear magnolia’s growth rate is an important factor to consider when planning your garden or landscape design. In this article, we’ll take a closer look at what to expect from this magnolia’s growth pattern.
A Brief Overview of the Teddy Bear Magnolia
Before diving into the specifics of the teddy bear magnolia’s growth rate, it’s helpful to understand some background on this variety. The teddy bear magnolia is a cultivar of the popular southern magnolia species. It’s an evergreen tree in warmer climates, while in cooler zones it may shed its leaves in winter.
Some key traits that set the teddy bear magnolia apart:
- Compact, dense growth reaching 20-25 feet tall and 12-15 feet wide at maturity
- Abundant, fragrant 8-12 inch white blooms from mid to late spring
- Lustrous dark green leaves with fuzzy undersides
- Greater cold hardiness than the southern magnolia species
This beautiful magnolia tree does well in zones 7 through 9 and in full sun to partial shade. This plant does best in acidic, well-drained soil and needs extra water when it’s dry.
Factors Influencing the Teddy Bear Magnolia’s Growth Rate
The teddy bear magnolia is considered a relatively slow-growing tree. The rate and size of its growth are affected by a number of things:
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Age of the tree – Growth is most rapid on younger trees up to around 10 years old. The rate gradually slows as the tree matures.
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Climate and growing conditions: Plants grow faster in warmer places where the growing season lasts longer. Cooler regions limit growth.
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Soil quality – Rich, loamy acidic soil enables the best growth performance. Poor soil stunts development.
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Sunlight—Full sun is best for the fastest growth. Too much shade limits the growth rate.
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Pruning and damage – Pruning typically slows growth somewhat. Damage can stunt or distort growth.
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Water and nutrients – Adequate water and fertilization encourages growth up to the tree’s genetic potential.
What to Expect from the Teddy Bear Magnolia’s Growth Rate
Taking the above factors into account, a newly planted teddy bear magnolia can achieve the following growth rates under ideal conditions:
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Years 1-2 – Around 1-2 feet of new growth per year. Focus is on establishing roots.
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Years 3-10 – Growth rate peaks at 1-2 feet per year Most rapid vertical growth occurs.
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Years 10-20 – Slows to 0.5-1 foot of new growth annually. The tree starts filling out.
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Years 20+ – Drops to less than 12 inches of growth per year as it nears maturity.
You can expect a happy, healthy teddy bear magnolia to reach its mature size of 20-25 feet tall and 12-15 feet wide over a period of 20 to 25 years when grown in a suitable climate.
It’s important to note that growth rate can fluctuate year to year based on that season’s conditions. But over the long run, this range is typical.
Caring for Your Teddy Bear Magnolia to Maximize Growth
To help your teddy bear magnolia achieve its best possible growth rate, keep these care tips in mind:
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Select a site with full sun to partial shade and well-draining, acidic soil.
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Water regularly when first planted, then taper off as the tree establishes.
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Apply a 2-4 inch layer of mulch around the tree to retain moisture and soil nutrition.
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Fertilize in early spring with a balanced fertilizer to nourish new growth.
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Prune judiciously in late winter to shape and stimulate new growth.
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Monitor for pests like scale insects and treat promptly if found.
With the proper growing conditions and care, you can expect your magnolia to reach its mature size within a couple decades, bringing you years of beauty and enjoyment. Pay attention to its growth patterns and adapt your care as needed to keep it thriving season after season.
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