Trimming hedges might look simple, but doing it properly takes a bit of know-how. The right timing, technique, and tools can make all the difference between a tidy, healthy hedge and a patchy or stressed-out one you’ll be embarrassed to show guests.
In this guide, we’ll explain how to trim your hedges properly and offer tips on avoiding common mistakes.
Step 1 - Get the Timing Right before You Trim
Getting the timing right can significantly affect how healthy and tidy your hedges look. Trim too early, and you might knock back new growth. Trim too late, and the sun or frost might do more harm than good.
In most parts of Tassie, the sweet spot for a proper trim is late winter into early spring. The weather’s still cool, but your hedge is about to burst into growth, so it recovers fast and comes back fuller.
Here are a few timing tips to help:
- Late winter or early spring is the best time to give your hedge a proper trim. This sets it up to grow back full and healthy.
- A light tidy is fine if your hedge gets a bit wild during summer. Just skip the hot or dry days so you don’t put too much stress on it.
- For flowering hedges, wait until the flowers are done before trimming. That way, you won’t accidentally cut off next year’s buds.
- If it’s frosty outside, hold off. Cold weather can be rough on freshly cut branches.
Step 2 - Pick the Best Tools for Clean Cuts
Don’t grab the rusty shears from the shed and hope for the best. The right tools can make all the difference in making clean cuts, smooth shapes, and healthy hedges.
Here’s what you might need in your hedge-trimming toolkit:
- Hedge shears – Good for shaping soft new growth and keeping edges neat.
- Loppers – Best for thicker branches that your shears can’t cut.
- Pruning saw – Useful for old or woody branches that are too tough for loppers.
- Electric hedge trimmers – Handy for long hedges or big jobs. Cordless ones give you more freedom to move.
- Pole trimmers – Great for tall hedges, so you can stay on the ground instead of using a ladder.
- Safety gear – Always wear gloves and eye protection. If using noisy or electric tools, earmuffs are a smart idea too.
And yep, people do ask, ‘Can you trim hedges with a chainsaw?’ You can—but you’ve got to be careful. Chainsaws are handy when dealing with big, overgrown hedges or needing to take off thick sections in a hurry. But for regular shaping or keeping things neat, it’s not the best tool for the job.
Step 3 - Start with a Rough Cut, Then Fine-Tune the Shape
Begin with a light rough cut to remove the bulk. Don’t worry too much about getting it perfect on the first try. Once the significant overgrowth is gone, step back and check the overall shape from a distance.
Then, go back in for the fine-tune pass. Work slowly and make small adjustments. Keep the blades moving and avoid over-trimming any one section. It’s like giving a haircut: You can always take more off, but you can’t stick it back on!
Step 4 - Use Guides to Keep It Even
Want that clean, straight look? Run a string across the top of your hedge at the height you aim for. It gives you something to follow so your cuts stay nice and even. When shaping the sides, aim to taper them slightly so the base is wider than the top. That way, sunlight can still reach the lower parts of the hedge, keeping it full and healthy from top to bottom.
Step 5 - How Far Back Can You Trim Hedges Safely?
This one depends on the type of hedge you’re dealing with. Some hedges, like box or lilly pilly, can handle a fairly hard cut and still bounce back. Others, like conifers, don’t respond well if you cut too far into old wood, and they might not regrow.
People often ask, ‘Can you trim hedges too much?’ The answer is yes. Over-trimming can stress the plant, reduce its shape, or leave bare patches that never fill in properly. A good rule of thumb? Don’t cut back more than one-third of the hedge’s growth at a time unless you’re doing a proper rejuvenation prune (and even then, be cautious).
Tip: When in doubt, trim lightly and more often instead of going all-in at once. That way, your hedge stays healthy and tidy without the risk of long-term damage.
Step 6 - Keep Your Hedges Healthy With Regular Care
A good trim now and then is only part of the picture. To keep your hedges in top shape, water them during dry spells, mulch around the base to keep roots cool, and feed with a slow-release fertiliser in spring.
Also, keep an eye out for signs of pests or disease, especially after trimming. Brown patches, holes, or weird smells might mean it’s time to call in some backup. A healthy hedge not only looks better but also lasts longer and handles Tassie’s weather with ease.
Need a Hand With Your Hedges?
If trimming hedges isn’t your thing or you just want them looking neat without the hassle, Lawn Squad is here to help. Our team uses the right gear and takes the time to make your hedges look spot on.
