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You prune a pittosporum hedge to keep it dense, healthy, and looking its best.
If you’ve been wondering how to prune pittosporum hedge properly, you’ve come to the right place.
The good news is that pruning pittosporum isn’t complicated, but it does require the right timing and technique.
Getting this wrong can leave you with bare patches or a thinner hedge that takes seasons to recover.
In this post, we’ll cover exactly how to prune pittosporum hedge, when to do it, and the common mistakes to avoid.
Let’s dig in.
Why You Should Prune Pittosporum Hedge
Pruning pittosporum hedge is essential for several reasons, and it’s not just about looks.
1. Encourages Dense, Bushy Growth
When you prune pittosporum hedge, you remove the tips of the branches.
This simple cut triggers the plant to produce new shoots lower down on the stem.
The result is a thicker, fuller hedge that doesn’t have those awkward bare gaps.
Without regular pruning, pittosporum can become leggy and sparse at the bottom.
So if you want a solid green wall, you need to prune pittosporum hedge consistently.
2. Keeps the Hedge at Your Desired Size
Pittosporum can grow quite vigorously, especially in warm climates.
If you don’t prune pittosporum hedge, it can quickly outgrow its space.
It might start blocking walkways, shading out other plants, or just looking unruly.
Regular pruning keeps the hedge neatly contained within your preferred dimensions.
You get to control the height and width instead of letting the plant decide for you.
3. Removes Dead or Damaged Wood
Pruning pittosporum hedge is also a great opportunity to clean up any dead, diseased, or broken branches.
These unhealthy parts can attract pests and diseases if left in place.
By cutting them out, you improve airflow through the hedge.
Better airflow means less chance of fungal problems developing in the dense foliage.
So think of pruning as a health check for your pittosporum.
The Best Time to Prune Pittosporum Hedge
Timing is everything when you want to prune pittosporum hedge successfully.
Get the timing wrong, and you might accidentally remove flower buds or stress the plant.
1. Late Spring to Early Summer is Ideal
The best time to prune pittosporum hedge is in late spring or early summer.
This is right after the main flush of new growth has started to harden off.
At this point, the plant is in active growth mode.
It will recover quickly from the pruning and push out fresh new shoots.
This timing also works well because you’re not cutting into old wood that’s slow to regrow.
2. Avoid Pruning in Late Autumn or Winter
You should avoid pruning pittosporum hedge in late autumn or winter.
The new growth that results from pruning won’t have time to harden off before the cold hits.
That tender new growth is very susceptible to frost damage.
If you live in a cooler region, this could set your hedge back significantly.
So stick to the warmer months for the safest results.
3. Light Touch-Ups Are Fine Any Time
While major pruning should be done in late spring, light touch-ups are more forgiving.
If you just want to snip off a few stray branches that are poking out, you can do that almost any time.
Just avoid doing heavy pruning during a heatwave or during frosty periods.
But for the main shaping, mark your calendar for late spring.
Step-by-Step Guide on How to Prune Pittosporum Hedge
Now that you know the why and the when, let’s get into the actual how.
Following these steps will ensure you prune pittosporum hedge like a pro.
Step 1: Gather Your Tools and Clean Them
Before you start, make sure you have the right tools ready.
You’ll need a pair of sharp hedge shears or pruners.
For thicker branches, a pair of loppers might be necessary.
Make sure your blades are clean and sharp.
Dull blades will crush the stems instead of making a clean cut.
And clean blades prevent the spread of disease between plants.
You can wipe them down with rubbing alcohol to be extra safe.
Step 2: Prune Pittosporum Hedge for Shape
Start by trimming the sides of the hedge to create your desired shape.
A good rule of thumb is to make the base slightly wider than the top.
This allows sunlight to reach the lower branches.
If the top is wider than the base, the lower parts get shaded out and become bare.
Work your way along the hedge, making smooth, even cuts.
Step back regularly to check your progress from a distance.
Step 3: Cut Back the Top Last
Once the sides are done, tackle the top of the hedge.
Cut the top to your desired height, keeping it level.
You can use a string line as a guide for a perfectly straight edge.
Remember to prune pittosporum hedge top to be slightly lower than you want the final result to be.
This gives the plant room to grow into the space.
Step 4: Thin Out Dense Interior Growth
After shaping, take a look inside the hedge.
If it’s very dense, you might want to remove some of the older, thicker stems.
Cut these right back to the base of the plant.
This opens up the interior and lets light and air penetrate.
It also encourages fresh new growth from the center of the hedge.
This step is super important for keeping your pittosporum healthy long-term.
Step 5: Remove Dead Material and Clean Up
Finally, go through and remove any dead, diseased, or crossed branches.
Then gather up all the clippings and dispose of them properly.
Don’t leave them lying around as they can harbor pests.
After pruning pittosporum hedge, give the plants a good drink of water.
You can also apply a balanced fertilizer to support the new growth.
Common Mistakes to Avoid When You Prune Pittosporum Hedge
Even with the best intentions, people make mistakes when pruning pittosporum.
Let’s look at the most common ones so you can steer clear.
1. Cutting Too Far Back into Old Wood
Pittosporum does not reliably regrow from very old, bare wood.
If you cut back into the thick, woody base, the plant might not sprout again.
That can leave you with permanent bare patches in your hedge.
So always prune into the green, leafy growth, not the ancient wood.
2. Pruning Too Late in the Season
As we discussed, pruning too late in the year is a big no-no.
The tender new growth will likely get zapped by frost.
If this happens, you’ll have damaged tips all over your hedge.
Stick to your late spring window for the main prune.
3. Ignoring the Hedge Base
It’s easy to focus on the top and sides and forget the base.
But the base needs trimming too, especially if the hedge is spreading outwards.
You want to keep the base neat and slightly narrower than the middle.
This helps keep the classic, formal hedge shape.
So, How Do You Prune Pittosporum Hedge?
You prune pittosporum hedge by shaping it with sharp shears in late spring.
Make sure the base is wider than the top, and always cut into the green growth.
Don’t be afraid to trim it back, as regular pruning pittosporum hedge keeps it looking fantastic.
Thin out the interior and remove dead wood for good airflow.
Avoid pruning in winter or cutting into old, bare wood.
Now that you know how to prune pittosporum hedge, you can keep yours looking its best.
Grab your hedge shears and give your pittosporum the trim it deserves.