Skip to Content

Why Is My Magnolia Tree Blooming In September – 4 Primary Reasons

Sharing is caring!

Has your magnolia tree started blooming in September and now you wonder why is my magnolia tree blooming in September?’ Do you love things happening in an orderly manner?

Or are you a worried plant parent scouring the internet for some answers? Well, then keep on reading cause we’re here to help you in regards to ‘why is my magnolia tree blooming in September?’.

Were you contempt that nothing new could shock you? But has that belief been completely shattered now that your magnolia tree has started blooming? And that too in September!

Are you wondering ‘why is my magnolia tree blooming in September?’ If so, then this is the right place for you cause we’ll be ridding you of your concern and curiosity regarding ‘why is my magnolia tree blooming in September?’.

Why Is My Magnolia Tree Blooming In September
Magnolia Tree – via Pixabay

Magnolia Blooming

The intricately beautiful and elegant blossoms, intoxicating fragrance, and lively green leaves add to the charm and popularity of magnolia trees. They are one of the most popular flowering trees.

The wide variety of these trees can add a little confusion for when they bloom but normally you’ll find a tree blooming from late winter to midsummer. So, that can be from around March through April or sometimes you can also see your magnolia tree blooming around May and June.

And so, your worry for your tree growing in September is well-grounded and reasonable. Here are some reasons why this might be happening.

Why Is My Magnolia Tree Blooming In September?

Many people find their magnolia trees blooming untimely. Trees that do this are said to be late-bloomers (pun intended). People usually don’t find it harmful or dangerous as they can’t figure out what they did differently for one tree compared to another.

And usually, it isn’t because of something the grower is doing inaccurately and could be occurring due to natural reasons.

Plant Immaturity

Plants require both physical and psychological maturity before they are ready to blossom. While the plants are in their juvenile stage, they don’t blossom.

According to Cultivar and Growth rate, magnolia trees take around 10 to 30 years to mature. Usually, magnolia trees start blooming when they are 10 years old. This maturity can be slowed down or fastened up according to the conditions provided to the trees.

So your magnolia tree blooming late can be because it wasn’t mature enough during the late winter to the midsummer period but was mature enough later in the fall time around September or August.

Winter Injury

Flower buds are usually less robust compared to leaf buds that are capable of enduring harder conditions. Flower buds are sensitive and so, during the blooming season the tree requires special attention.

This means low temperatures are very dangerous for the buds and blossoms on the magnolia trees, which can freeze very easily if the temperature goes below 32 degrees.

So this late-blooming can be because of any intense damage the tree has gone through during the last winter. Due to this, the reservoirs of nutrients will focus on the overall plant and will try to bring it back to its healthy state instead of flowering, hence delaying the flowering process.

Another factor that can cause this is the unpredictable climate. Climate change has been changing the way the world works and just like that the change in the cycle of seasons can cause this delay in the blossoming of the tree.


Another reason for this can be the type of magnolia tree that you’ve grown. Magnolia trees come in a huge range and variety that are different from the others in various manners.

This difference can also be the flowering season of the plants. An example is the Grandiflora Magnolia that blooms much later than the rest, throughout the summer.

Blooming Twice A Year

Even though it isn’t common, magnolia trees can blossom twice a year. This can be in early spring and late summers. Variety, health, and care are the most significant factors when it comes to how often magnolia trees bloom.

If your tree bloomed in early spring and then later again in September, it might be because it’ll be blooming twice this year.

Why Is My Magnolia Tree Blooming In September 2
Magnolia Tree Blooming – via Pixabay

What Should You Do If Your Magnolia Tree Bloomed In September?

If your magnolia tree has started blooming in September, the best thing for you to do is nothing. Just wait for your tree to start the normal cycle next year. Pruning the trees is a no unless the leaves have started getting diseased or have grown way too long.

One thing that you need to make sure of is that you keep taking care of it as you would during a normal flowering period in spring or midsummer, as the tree will still require that routine even if it’s not flowering at the right time.

Care for Magnolias

In all three instances for this late-blooming, we’ll see that the care of the trees is as important as anything else. While it doesn’t play a direct and major role in causing the blooms in September, it can make quite a difference in the health and state of the trees.

Land, Soil, and Fertilizer 

Magnolias grow best in well-drained, fertile, and slightly acidic soil in a sunny atmosphere. Make sure that the area you choose isn’t a frost pocket.

You also need to ensure that the tree has enough place to grow and that its growth doesn’t get restrained. Mulch it with manure, composted pine, bark, or leaf mold before the flowering season.

Watering and Sun

Magnolias need to be watered regularly before they have been matured but even after this, keeping a healthy and regular routine is very important during the flowering season. Another very important thing for you to ensure is that the tree receives enough sunlight daily.


Finding your magnolia tree blooming in September or the fall season isn’t unusual or dangerous for your plant. What can be dangerous is that you are not taking care of it the way it requires during that time.

This late-blooming is even found beneficial at times when there is an untimely freeze. So, as a grower, you should ensure that you keep your tree healthy and provide it with all the best conditions to grow in.