Field Bindweed (Hiran Khuri)

Field bindweed (Convolvulus arvensis, lehli or hiran-khuri) is the persistent creeping vine that twines through fields and over bunds across the Punjab plains, the Pothohar, and the Balochistan highlands. It is a deep-rooted perennial with trailing stems and pale funnel-shaped flowers, and it is honest to say at the outset that it is one of the world’s most troublesome agricultural weeds.¹ On disturbed ground it can serve as living mulch and emergency feed — but it is a plant to manage, never to encourage.

Where it thrives

Bindweed thrives on cultivated, disturbed, and dryland ground. Its roots and rhizomes penetrate extraordinarily deep — down to about 9 m — which is why it shrugs off drought and is absent only from genuinely wet ground.² From that root system it spreads fast: underground parts can colonise close to 30 m² in a single season.² That same depth makes it almost impossible to dig out, because any fragment of root left behind regrows. It suits exactly the warm, semi-arid, tilled conditions of much of upland and plains Pakistan.

Role in the system

The honest framing is a support plant on ground you are already managing, not a guild member you plant. Where it is present, its dense creeping habit does cover bare soil and its foliage can be cut as a thin living mulch, and the deep taproot draws moisture and minerals from well below the reach of crop roots. The flowers also feed pollinators: bindweed nectar draws honeybees, bumblebees, butterflies, and specialist morning-glory bees.³ But every one of those modest services comes with the weed’s real cost, so the role is to be contained and harvested, not propagated. For keeping it off clean beds, a hand cultivator and weeder earns its keep.

Grazing value

The vine is grazed and can act as emergency fodder on disturbed ground, but it is feed of last resort. The foliage contains tropane and pyrrolidine alkaloids that are mildly toxic to some livestock and can upset the gut, with horses among the more sensitive.¹ It can be taken in small amounts as part of a mixed diet, but it should never be the bulk of a ration.

Cautions

This is a serious weed and the cautions are the main story. It is listed among the 10 worst weeds in the world and can cut crop productivity by as much as 50%, smothering plants under dense twining mats.¹ The deep, fragment-regenerating root system makes it very hard to control once established, and the underground parts can infest close to 30 m² in a single season, so the real discipline is preventing it from seeding and spreading rather than tolerating it for its minor services.² On a working farm, weigh any living-mulch value against the near-certainty that it will try to take the field — in practice it is a plant you contain and exhaust, by repeated cutting and clean cultivation, not one you keep on purpose.

Sources

1. University of Nebraska–Lincoln, Institute of Agriculture and Natural Resources. “Field Bindweed.” UNL Beef.
2. EAFRINET / Lucidcentral. “Convolvulus arvensis (Field Bindweed).” EAFRINET Weeds.
3. Wikipedia contributors. “Convolvulus arvensis.” Wikipedia.