Guide
When is the best time to clear blackberry in NZ?
Blackberry can be cleared at any time of year, but timing makes a real difference to how quickly it comes back. Here’s how it grows, and the best time to clear blackberry on your land.
On this page
How blackberry spreads
Blackberry spreads two ways. Its canes arch over and root wherever the tip touches the ground, so a single plant can creep metres across a paddock in a season. It also fruits in late summer, and birds carry the seed well beyond your fence line. Weedbusters has a useful blackberry profile if you want to check what you’re dealing with.
The best time to clear blackberry: before it fruits
Clearing in late spring or early summer, once growth is up but before the berries ripen, stops that season’s seed being spread. It also gets on top of new canes before they reach the ground and root.
Blackberry clearing in autumn and winter
Clearing later in the year still works. The main thing to watch is ground conditions: wet winter soil can limit where heavy machinery can safely go, especially on slopes and soft paddocks. We’ll tell you if the ground is likely to be a problem when we quote.
How to keep blackberry under control: plan the follow-up
Blackberry will send up new growth after it’s cut, because the crowns and roots are still in the ground. A follow-up mow on the regrowth, while it’s still young, is much quicker than the first clear and helps stop it establishing again.
Where blackberry takes hold first
Blackberry usually starts along the edges: fence lines, gully sides, stream banks, track margins and the corners a mower can’t reach. Birds perch on fences and drop seed underneath, and arching canes root wherever they touch bare ground, so a thin strip along a boundary can become a solid thicket within a few seasons.
That’s where to focus blackberry control too. Keeping edges and banks mown, for example as part of regular lifestyle block mowing, helps stop new canes rooting, and it’s far quicker than clearing the same ground again once it has thickened. If blackberry is growing along a stream or wetland, check your regional council’s rules before any work near the water.
Before
After
Boundary clearance, before and after mulching
A simple timeline
- Late spring to early summer: mulch established blackberry before it fruits.
- Summer to autumn: watch for regrowth and new canes along edges and fence lines.
- Next growing season: a follow-up mow on the regrowth before it thickens up.
- Ongoing: keep the area grazed, mown or planted so it can’t take over again.
The short answer: the best time to clear blackberry is before it fruits, but the second-best time is now. Blackberry left for another season only gets thicker, wider and harder to reach.
Our gorse and blackberry removal service cuts and mulches blackberry in place, with no spraying. Send us a few photos for a quote.
Common questions
Best time to clear blackberry, answered.
Can you clear blackberry without spraying?
Yes. Blackberry mulching is entirely mechanical: our commercial 4×4 flail mowers cut and mulch it in place, with no chemical programme.
Will blackberry grow back after mulching?
Some regrowth is normal because the roots stay in the ground. Mechanical clearing and appropriate follow-up management can help keep blackberry growth under control, and follow-up mowing on young regrowth is much quicker than the first clear.
Can you work around trees I want to keep?
Yes. Let us know what needs to stay when you send your photos, and we’ll plan the job around it.
Is it better to clear blackberry in summer or winter?
For stopping the spread, late spring to early summer is best, before the berries ripen. Winter clearing works too, as long as the ground is firm enough for machinery. The worst option is leaving it another season.
When is the best time to spray blackberry in NZ?
Spray products for blackberry are generally applied while the plant is actively growing and in full leaf, and the product label and your regional council guidance set the timing. If you would rather not spray, the best time to mulch it is late spring to early summer, before it fruits.
How do you get rid of blackberry without chemicals?
Cut and mulch the canes and crowns, then follow up on the regrowth while it is young. Repeated mowing weakens the plant over time, and getting pasture or planting established helps stop it creeping back in.