How deep do bindweed roots go?

Bindweed roots reach 5m deep in favourable soil. Lateral roots spread 3-4m from the main plant. Even vigorous digging rarely removes the entire root system. Any fragment longer than 5cm left in the soil will produce a new plant, typically within 14 days.

Will glyphosate kill bindweed permanently?

A single glyphosate application rarely kills bindweed permanently. The chemical translocates down the stems into the roots, but the root system is so extensive that some portions survive. Expect to need 2-3 applications over consecutive growing seasons. Allow 3-4 weeks between applications for regrowth to reach 30-45cm.

Can I dig out bindweed?

Digging is not practical for established bindweed. The brittle roots snap easily, and every fragment left behind regenerates. Digging actually multiplies bindweed by breaking roots into dozens of viable pieces. It works only for very young seedlings before the root system establishes.

How long does it take to get rid of bindweed?

Complete eradication takes 3-5 years of consistent treatment. Glyphosate users typically see major reduction after 2 growing seasons. Organic methods take longer, often 3-5 seasons of relentless cutting. Skipping even one month of treatment allows roots to rebuild energy reserves.

Is bindweed the same as Japanese knotweed?

No, they are completely different plants. Bindweed is a slender climbing vine with trumpet-shaped flowers. Japanese knotweed is an upright plant reaching 3m with bamboo-like hollow stems and heart-shaped leaves. Both are invasive, but Japanese knotweed has legal reporting obligations that bindweed does not.

Does salt kill bindweed?

Salt kills bindweed temporarily but sterilises the soil. Salt builds up and prevents any plant from growing for years. It damages soil structure, kills beneficial organisms, and can leach into groundwater. Never use salt as a weedkiller in garden soil.

How do I stop bindweed spreading from my neighbour's garden?

Install a root barrier along the boundary. A vertical sheet of heavy-duty polypropylene or HDPE buried 60cm deep blocks lateral root spread. Alternatively, maintain a regularly mown 30cm strip along the boundary. Cut any bindweed shoots the moment they appear on your side to starve the roots.

Pests & Problems | 15 February 2026 | 14 min read

How to Get Rid of Bindweed

How to control and remove bindweed from UK gardens. Covers field and hedge bindweed identification, glyphosate timing, organic methods, and suppression.

Hedge bindweed with large white trumpet flowers twining tightly around garden fence posts and shrub stems

Pests & Problems

Bindweed is one of the most persistent perennial weeds in UK gardens, with two native species: field bindweed (Convolvulus arvensis) reaching 2m and hedge bindweed (Calystegia sepium) climbing to 3m or more. Root systems extend 5m deep and spread 3-4m laterally. A 5cm root fragment can regenerate a new plant within 14 days. Complete eradication takes 3-5 years of consistent treatment.

Root DepthUp to 5m deep

Regrowth5cm fragment regrows in 14 days

Glyphosate TimingJune-August at 30-45cm stems

Eradication3-5 years of consistent treatment

Key takeaways

Bindweed roots can grow 5m deep, making single treatments ineffective
A 5cm root fragment left in the soil will regenerate a new plant within 14 days
Glyphosate is most effective when applied to 30-45cm stems in June-August
Organic control requires cutting or pulling every 7-10 days for at least two full growing seasons
Black polythene mulch suppresses bindweed after 12-18 months of total light exclusion
Field bindweed has smaller pink-striped flowers (2cm); hedge bindweed has large white trumpets (5-7cm)

bindweed weed control invasive weeds glyphosate organic gardening perennial weeds

By Garden UK Editorial Team

Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.

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