Spring weeding guide in Australia: Tackling the worst offenders

Spring is the most important weeding window in an Australian garden. Weeds that spent winter dormant are now actively growing. Most are weeks away from setting seed. This window is narrow and it closes fast, so making weeding the priority in your garden now will pay off many times over.

Early spring is the critical window — most weeds are easiest to remove before seed set and before summer heat hardens the soil.

Tackling the worst offending weeds won't necessarily eliminate them for good in the first season, but in the long term with the right approach, these weeds can be beaten.

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The worst offenders: identification and removal

The ten weeds below are among the most persistent and damaging in Australian gardens, listed roughly in order of difficulty to remove. Understanding how each one spreads is the key to removing it effectively. The wrong approach often makes the problem worse.

Soursob or Bermuda buttercup (Oxalis pes-caprae) invading the riparian layer in the Australian bush.

1. Nutgrass (Cyperus rotundus)

Nutgrass — the triangular stem cross-section identifies it immediately; pulling makes the infestation worse by breaking tubers apart and spreading them.

Category	Detail
Climate zone	Subtropical QLD, tropical NT, warm temperate NSW, WA coastal
How it spreads	Underground tubers and rhizomes. Tubers detach when pulled and each one regrows independently. Pulling makes it worse.
Removal approach	Never pull by hand — this snaps the stems and leaves tubers behind, each of which becomes a new plant. Use a hori hori to work around the plant and lever out the entire tuber cluster intact. Tubers sit 5–15cm deep and are connected by fragile rhizomes — slow, careful extraction is more effective than speed. Remove the crown (the growing point at soil level) from any plant you cannot fully extract — this halts growth for the season without spreading tubers. Repeat every four to six weeks through spring and summer. The goal is to exhaust the tuber reserves over multiple seasons by denying the plant the opportunity to photosynthesise. Mulch thickly (10–15cm) after each session to slow regrowth and reduce the light available for new shoots. Never compost — tubers survive most home compost conditions.
Difficulty to eradicate	Very hard

Best tool for extracting deep roots Hori Hori The narrow blade works around the tuber cluster to extract it intact rather than breaking it apart — the critical distinction with nutgrass where every fragment regrows. Shop now →

2. Kikuyu (Cenchrus clandestinus)

Kikuyu — rhizomes grow through and beneath native root systems; for large infestations a pick or mattock clears ground faster before replanting.

Category	Detail
Climate zone	All zones — most aggressive in subtropical and temperate coastal gardens. Kikuyu is a popular lawn grass, which is how it most commonly enters native garden beds.
How it spreads	Rhizomes and stolons that grow through and beneath native root systems. It is allelopathic, meaning it actively suppresses surrounding plants through root chemicals. Spreads rapidly in warm weather.
Removal approach	For large open infestations before planting: use a pick or mattock to clear the rhizome mat to at least 10cm depth, then remove all material from the site. For established beds with native plants present: work slowly with a hori hori, tracing each rhizome and cutting it cleanly rather than pulling. Rhizomes run at 3–10cm depth and will be white and firm. Remove all material from the site — any fragments left on the surface will re-root within days. Never compost — rhizome and stolon fragments survive most home compost conditions. Expect to repeat every four to six weeks through the growing season for at least two years before the infestation becomes manageable.
Difficulty to eradicate	Very hard

Best tool for large clearances Pick or Mattock (large clearances) For large open areas before replanting, a pick or mattock clears the rhizome mat faster than any hand tool. In established beds around native roots, the hori hori traces and cuts rhizomes without broad soil disturbance. Shop now →

3. Soursob (Oxalis pes-caprae)

Soursob — bright yellow flowers signal the plant is about to produce bulb offsets; remove before any flower opens and never disturb the bed more than necessary.

Category	Detail
Climate zone	Mediterranean WA, SA, VIC, coastal NSW
How it spreads	Bulb offsets — one plant produces dozens of daughter bulbs at varying depths each season. Digging distributes the offsets further through the bed.
Removal approach	Begin removal in late winter before any flowers open — once flowers appear, the plant has already begun producing new bulb offsets for the following season. Use a slim trowel to carefully work around the base of the plant and lever out the entire bulb cluster intact. The main bulb sits at 5–10cm with daughter bulbs attached on short stolons. Place removed material directly into a bag — never shake roots, as loose bulb offsets will fall into the bed and germinate the following season. Never compost — bulbs survive most home compost conditions. For large infestations: lay cardboard sheets directly over the soil surface, overlap edges by at least 20cm and weight down with mulch. Leave for a minimum of three months through winter and spring. After removing, re-mulch thickly and expect some regrowth from deep bulbs. Repeat extraction every season. Soursob requires three to five years of consistent removal before an established infestation is under control.
Difficulty to eradicate	Very hard

Best tool for bulb extraction Slim Trowel The narrow blade works around the bulb cluster to extract it whole — the critical step in managing soursob, since broken offsets left in the ground each become a new plant the following season. Shop now →

4. Creeping oxalis (Oxalis corniculata)

Creeping oxalis — the small yellow flowers must be removed before seed pods form; the pods eject seed up to 2m when touched or disturbed.

Category	Detail
Climate zone	All zones
How it spreads	Explosive seed pods that eject seed up to 2m, plus stolons that root at each node. Spreads horizontally through mulch and bed surfaces.
Removal approach	The moment you see a yellow flower, act immediately — seed pods can form within days of flowering and eject seed explosively when touched. If pods are already present, cup your hand over them before removing to contain the seed. Use a Cape Cod weeder to sever stolons at soil level across a wide area without touching the plants directly. Follow immediately with a hand fork to lift the severed stolon network out of the bed. Bag and remove immediately — even short stolon fragments with a node will re-root if left on the soil surface. Never compost. After clearing, mulch thickly to suppress germination of the seed bank already present in the soil — expect continued germination for several seasons as seeds remain viable for up to five years.
Difficulty to eradicate	Hard

Best tool for severing stolons Cape Cod Weeder The angled blade severs creeping oxalis stolons at soil level quickly and cleanly — significantly faster than pulling by hand, and avoids direct contact with seed pods that hand-pulling risks. Shop now →

5. Wandering trad (Tradescantia fluminensis)

Wandering trad — any broken stem fragment re-roots; collect carefully into bags and never compost or mulch with the material.

Category	Detail
Climate zone	Subtropical and coastal moist temperate zones — QLD, coastal NSW, moist VIC
How it spreads	Stem fragments — any broken piece re-roots. Thrives in shade under native canopy. Spreads rapidly through disturbed ground and along creek margins.
Removal approach	Wear gloves before starting — the sap causes skin irritation with repeated or prolonged contact. Do not pull through established plants. In tight spaces under native shrubs, cut stems at ground level with secateurs rather than pulling — this avoids dragging broken fragments through the plant. Working from the outer edge inward, gather stems gently into a pile by rolling rather than pulling. The goal is to keep stems intact so each piece can be contained rather than scattered. Place directly into sealed bags as you go — do not pile removed material on the ground where it will re-root. Never compost, mulch with it, or place it in garden waste that will be chipped on site. Bag and seal for council collection. Return every three to four weeks through the growing season — sustained effort over two or more seasons is needed to clear an established infestation.
Difficulty to eradicate	Hard

Best tool for safe collection Leather Gloves The sap causes skin irritation with repeated contact — gloves are essential for any sustained removal session. No cutting tool beats collecting by hand for wandering trad; the goal is to avoid breaking stems rather than to speed up removal. Shop now →

6. Lantana (Lantana camara)

Lantana — a weed of national significance; bird-dispersed berries seed into native understorey and form dense spiny thickets that exclude native regeneration.

Category	Detail
Climate zone	Subtropical and tropical QLD, coastal NSW, NT
How it spreads	Bird-dispersed berries seed prolifically into native understorey. Stems root at nodes. Forms dense thickets that exclude native regeneration. Weed of national significance.
Removal approach	Wear thorn-proof gloves before starting — lantana stems are heavily spined and cut stems spring back unpredictably. Cut stems at the base with bypass loppers. For stems over 3cm use a pruning saw. Cut as low as possible, as close to ground level as the plant allows. Treat the cut stump immediately — within 30 seconds of cutting is ideal, as the uptake window closes fast. Apply a registered stump treatment product (typically a glyphosate or triclopyr paste) directly to the cut surface. Do not dilute. Remove all cut material from the site and bag and bin — do not compost and do not chip on site, as seeds in the berries will survive. Monitor for regrowth from untreated root material and treat any new stems promptly. Address bird feeding trees nearby if possible — birds will continue to reseed any cleared area from adjacent lantana.
Difficulty to eradicate	Hard

Best tool for cutting woody stems Bypass Loppers Loppers cut stems at the base cleanly; a pruning saw handles stems over 3cm. Thorn-proof gloves are non-negotiable — lantana stems are heavily spined and cut stems spring back unpredictably. Shop now →

7. Broad-leaf privet (Ligustrum lucidum)

Broad-leaf privet laden with berries — spring is the window to catch seedlings before they set; they establish quickly in exactly the shaded positions native understorey plants need.

Category	Detail
Climate zone	Subtropical and temperate NSW, VIC, SE QLD
How it spreads	Bird-dispersed seed germinates prolifically in native understorey — seedlings establish quickly in exactly the shaded, moist positions that native plants occupy.
Removal approach	Spring is the most important window for privet — seedlings that germinated over winter are now large enough to find, but the tap root has not yet set deeply enough to resist extraction. For seedlings up to 30cm: extract with a garden weeder or hori hori, working the blade down alongside the tap root and levering the whole plant out cleanly. Hand-pulling alone often snaps the stem and leaves the root. For established plants: cut at the base with a pruning saw and treat the stump immediately with a registered stump treatment product applied to the cut surface. Apply within 30 seconds of cutting. Never compost — berry seeds survive most compost conditions. Walk the garden regularly through spring and summer — privet seedlings germinate prolifically and catching them small is the most effective long-term strategy.
Difficulty to eradicate	Hard

Best tool for established trees and shrubs Pruning Saw For established woody weeds, a pruning saw cuts through stems at the base cleanly and quickly — essential before applying stump treatment while the uptake window is still open. Shop now →

8. Paspalum (Paspalum dilatatum)

Krzysztof Ziarnek, Kenraiz, CC BY 4.0, via Wikimedia Commons

Paspalum — remove before the seed head forms in spring; once seed has set, birds and mowing distribute it across the entire garden.

Category	Detail
Climate zone	Subtropical QLD/NSW, coastal NSW, temperate VIC and SA
How it spreads	Seed spread by birds, water and mowing, plus tillers that spread horizontally. Re-establishes quickly in disturbed or moist soil.
Removal approach	Act before the seed head forms — this is the critical window. A paspalum plant with a seed head present will spread hundreds of seeds as you work around it. For widespread plants across an open bed, use a razor hoe to slice at soil level in a single sweeping motion. This severs the crown from the roots far faster than pulling plant by plant. For individual plants or those growing close to native roots, grasp the plant firmly at the base — not the stem — and pull the entire crown and root system out in one movement. Pulling from the stem alone snaps it and leaves the crown to regrow. Remove all severed material from the bed and bag it — do not leave cut plants on the surface as seed heads will continue to ripen and drop. Mulch thickly after clearing to suppress germination of the existing seed bank.
Difficulty to eradicate	Moderate

Best tool for slicing at soil level Razor Hoe A razor hoe slices paspalum crowns at soil level in a single sweeping motion — far faster than pulling individually when the grass has established across a bed. Follow up with a hand fork to lift severed crowns before they regrow. Shop now →

9. Capeweed (Arctotheca calendula)

Capeweed — the flat rosette smothers low groundcovers; one of the more manageable weeds on this list if caught before the yellow daisy flowers open.

Category	Detail
Climate zone	Mediterranean WA, SA, VIC, disturbed soils NSW
How it spreads	Seed only — prolific, light and wind-dispersed. The flat rosette smothers low groundcovers. Most visible and manageable in early spring before flowering.
Removal approach	Work from late August through September — capeweed rosettes are clearly visible on the soil surface at this point but have not yet begun to flower. Use a Cape Cod weeder held parallel to the ground and push the blade under the rosette to sever the tap root 2–3cm below the soil surface. The severed rosette can then be lifted cleanly without breaking the root. Alternatively, use a hand fork to lever the entire plant including the tap root out of the soil — more thorough but slower across a large area. Bag and remove from the site — capeweed plants removed before flowering can be composted if they have no seed heads present. Any plant that has flowered should be bagged and binned. Mulch immediately after clearing to prevent germination from the seed bank already present.
Difficulty to eradicate	Moderate

Best tool for lifting rosettes Hand Fork The hand fork levers the entire capeweed rosette out of the soil including the tap root — faster and more complete than pulling by hand, and cleaner than a hoe when working around native plants. Shop now →

10. Bindii (Soliva sessilis)

Harry Rose from South West Rocks, Australia, CC BY 2.0, via Wikimedia Commons

Bindii — the low rosette is almost invisible until the spine-tipped burrs form in late spring; the window to remove it painlessly is August to mid-September.

Category	Detail
Climate zone	All temperate zones — VIC, NSW, SA, WA, ACT
How it spreads	Spine-tipped seed burrs that attach to clothing, animals and tyres and spread widely. The low rosette is easy to miss before the painful burrs form in late spring.
Removal approach	Walk the garden in late August and early September specifically looking for bindii rosettes — flat, ferny, bright green and sitting close to the soil surface. In garden beds: use a Cape Cod weeder or a hand fork to remove the entire rosette including the central root. The plant is shallow-rooted and comes out easily before burrs form. In paving joints, gravel paths and between pavers: use a block paving knife to reach into the joint and sever the root where other tools cannot fit. If burrs have already formed: wear thorn-proof gloves and remove carefully, placing material directly into a sealed bag. Bag and bin all material — burrs remain viable in compost and the green waste collection process may spread them if not bagged.
Difficulty to eradicate	Moderate

Best tool for joints and cracks Block Paving Knife (paving and gravel) In garden beds, the Cape Cod weeder severs bindii at the root before burrs form. In paving joints and gravel, a block paving knife reaches into cracks to cut the root cleanly where other tools cannot fit. Shop now →

Five principles for spring weeding

1. Act before seed set, not after

This is the single most important principle in weed management. A capeweed pulled in September before it flowers means it won't yet have produced hundreds of seeds that will germinate next spring. The goal is to prevent this year's weeds from becoming next year's problem.

The goal is to prevent this year's weeds from becoming next year's problem, so remove plants before they have the chance to flower.

2. Match the tool to the weed

The right tool makes a significant difference in both speed and effectiveness. A Cape Cod weeder severs shallow tap roots and stolons quickly across open beds. A hand fork lifts rosettes and root systems cleanly. A hori hori is the tool for bulb weeds and deep tap roots. A razor hoe slices grass weeds like paspalum at soil level across a wide area in a single pass. A block paving knife reaches into joints and cracks. Loppers and a pruning saw handle woody weeds like lantana and privet.

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3. Never compost problem weeds

Bulb weeds, seed-bearing weeds and rhizomatous grasses should never go into a home compost bin. They do not reach temperatures high enough to destroy bulbs, viable seeds or rhizome fragments. Bag problem weeds, seal the bag and bin them. The only weeds that can safely be composted are non-seeding, non-bulbing, shallow-rooted annuals that are removed before flowering.

4. Be careful near native root zones

Aggressive cultivation around established native plants, particularly Proteaceae like grevilleas, banksias and waratahs damages the shallow proteoid roots that are responsible for nutrient acquisition. When weeding within the drip line of an established native, use a hori hori and work slowly and shallowly.

When weeding within the drip line of an established native, use a hori hori rather than a fork and work slowly and shallowly.

5. Mulch immediately after weeding

Every time you remove a weed and leave the soil surface exposed, you are creating the exact conditions that new weed seeds need to germinate. A 7–10cm layer of coarse organic mulch suppresses germination, retains moisture and gradually improves soil structure. Keep mulch away from the crown of native plants and the graft union of any grafted specimens.

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The long game

Weed management is not a single spring task unfortunately. It is a multi-year process that gets progressively easier as the garden matures. As long as there's progress: removing what is there before it seeds, mulching what you have cleared and closing the gaps that let weeds establish in the first place, you're on the right track to beating some of these worst weeds.

An established native garden with closed canopy and groundcovers filling the available space is the most effective long-term weed suppression strategy available.

A well-planted native garden with groundcovers that fill the bed, a healthy soil with consistent mulch coverage and a closed shrub layer that reduces the light available for weed germination is another way to ensure success. Getting there takes two to three seasons of consistent management, but it's entirely worth it.

keep reading

A Guide to Australian Native Gardening

How to plan, plant and care for a thriving native garden, whatever your experience level.

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