The most reliable way to stop a persistent, suckering species from growing back is chemical stump treatment applied to the freshly cut surface, followed by grinding out what remains once the herbicide has taken effect. Cutting alone rarely stops a vigorous species from resprouting from its root system, no matter how many times the new shoots are removed.

How Do You Stop a Tree Stump from Sprouting Again?

Apply a registered herbicide to the cut surface within minutes of cutting, while the tissue can still draw the chemical down into the roots. This disrupts the root system’s ability to send up new growth, instead of just removing the shoots that have already appeared above ground. Spraying a stump that has already dried out is far less effective, since the cut surface has sealed over and can no longer draw the chemical down into the roots efficiently.

Why Do Some Stumps Keep Sprouting After Grinding?

Grinding removes the visible stump and the structural root crown, but not every root fragment left underground. Species such as willow, poplar and privet sucker readily from lateral roots left behind, even after the main stump has been ground out completely. English elm is another common regrower in this category, known for spreading almost entirely by root suckers rather than seed.

How Long Does Treatment Take to Work?

Most treated stumps stop sending up new growth within a few weeks of application. The root system itself can take one to two seasons to fully break down underground, though it can typically be ground out well before that process is finished.

Is Stump Treatment Safe for Nearby Plants?

Herbicide is applied in small, targeted amounts directly to the cut surface, not sprayed across the soil, which limits the risk to nearby plants when applied correctly by a trained arborist. It’s worth waiting before planting directly over a treated stump site, since the herbicide needs time to break down fully.

What Chemicals Are Used to Treat Stubborn Stumps?

Professional stump treatments use herbicides registered for this purpose by the Australian Pesticides and Veterinary Medicines Authority, applied strictly according to the product label and at the concentration appropriate to the species being treated. This is different from a generic weed killer bought off the shelf, which is not formulated or registered for stump application and is often far less reliable against a vigorous root system.

Stump Pro has provided chemical stump treatment across Hobart, the greater Hobart region and for most areas of Southern Tasmania since 2010, backed by fully qualified and insured arborists. Call 0437 339 063 or email office@stump-pro.com.au to book a stump treatment.

For the full guide, see “Using Stump Poisoning to Stop Aggressive Regrowth Permanently“.