Hemp seed is one of the most powerful attractor baits in UK coarse fishing. Small, dark, and only marginally suitable as a hookbait on its own (the seed is very small and hard to keep on a hook), hemp’s real value is as a free offering that draws and holds roach, chub, barbel, and dace in a swim with remarkable efficiency. A regular trickle of hemp introduced over a period of time creates a feeding frenzy in species that recognise it.
Hemp is legal to use as a fishing bait in the UK. It is sold pre-cooked, or as raw seed for home preparation. The plant-based origin of hemp means it is sometimes confused with cannabis, but hemp seed purchased from fishing tackle shops is a food product with negligible or no THC content.
[Image placeholder: A handful of prepared hemp seeds in a wet hand – the seeds are small, dark grey-green and split slightly at the seam revealing a white interior, alongside a stick float and river rod visible in the background]
Why Hemp Works
Hemp has several properties that make it exceptional as an attractor bait:
Oils: Hemp seeds contain natural oils that disperse in the current (in rivers) or gradually in still water. These oils create an upstream and downstream plume of attractive scent.
Appearance: Cooked hemp seeds turn dark and split slightly at the natural seam, revealing a white interior. This split seed looks similar to a small freshwater snail or crustacean. Species like roach, dace, and chub seem to associate the appearance with natural food.
Feeding response: Once introduced regularly, hemp produces an increasingly aggressive feeding response in shoal fish. Roach in particular will compete vigorously for hemp seeds, leading to fast, confident bites.
Preparing Hemp from Raw Seed
Raw (uncooked) hemp seed is cheaper than pre-cooked and can be prepared at home:
Method: 1. Place dry hemp seed in a saucepan and cover with cold water (approximately 3:1 water-to-seed ratio) 2. Bring to the boil, then reduce to a simmer 3. Simmer for 20-30 minutes, until the seeds begin to split at the seam (the white interior becomes visible) 4. Remove from heat and allow to cool in the water 5. Drain when cool and store in a sealed tub 6. Use the same day or refrigerate for up to 3 days
Slow cooker method: Place seed and water in a slow cooker on high for 6-8 hours overnight. Produces well-cooked, consistently split seed without watching a boiling pan.
Fermented hemp: Some anglers soak hemp for 24-48 hours before cooking to begin fermentation, then cook. The fermented version has a stronger, more pungent smell. Very effective for chub and barbel.
Pre-Cooked Hemp
Pre-cooked hemp in tins or bags is available from most UK tackle shops. It is ready to use straight from the container. The convenience premium over raw seed is significant, but for occasional use it is very practical. Quality varies between brands – look for seed that is well-split with visible white interiors.
Using Hemp as a Loose Feed
Hemp’s primary role is as a loose feed introduced regularly throughout the session:
Rivers (trotting and feeder fishing): Cup or catapult hemp upstream of the float or feeder position every few minutes. The seeds drift downstream in the current through the swim. The key is regularity – a consistent trickle rather than irregular large additions.
Canals: Introduce by pole cup or by hand (a pinch at a time) into the swim. On still canals, the hemp drifts slightly with any water movement and settles on the bottom. Roach and canal perch find it quickly.
Still waters: Hemp is less effective on large open still waters where the attractant plume disperses widely. It is more effective in marginal areas, at close range on a lake, or in combination with a feeder that concentrates the feed.
Hemp on the Hook
Hemp is difficult to use directly on a hook because of its small size and hard outer shell. However, it can be done:
Side hook method: A fine-wire size 20 hook pushed through the side of a cooked hemp seed. The seed is fragile and easily slips, but this is the traditional hemp-on-the-hook approach. Used in match fishing and roach fishing where the hookbait must match the free feed.
Banded hemp: A small silicon band (match fishing pellet band) stretched around the seed to hold it on a size 16-18 hook. More secure than side-hooking but changes the presentation.
Hair rig: A fine baiting needle threaded through the hemp, carrying a fine hair to a small hook (size 16-18). The most secure hookbait presentation.
In practice, most anglers use hemp as the free offering and fish a different hookbait that is easier to use – caster, maggot, or tares – over the hemp.
Hemp and Tares
The most celebrated UK roach fishing combination is hemp seed free offering with tares (a small black pea) on the hook. Tares are slightly larger than hemp, purple-brown when cooked, and fit easily on a size 14-16 hook. When roach are feeding on hemp, a tare on the hook among the hemp seeds produces confident, aggressive takes.
Tares require the same preparation as hemp – soak for 24 hours then cook in simmering water for 20-30 minutes until soft. They should be slightly soft when pinched but not falling apart.
Hemp for Barbel and Chub
Hemp is particularly effective for barbel and chub on rivers:
Barbel: Large quantities of hemp introduced upstream (typically by plastic bags full or by large bait dropper deposited upstream on the gravels) creates a feeding area that barbel lock onto. Hemp and casters is a legendary barbel combination.
Chub: Chub respond to hemp free offerings and will compete aggressively with barbel for it. A feeder packed with hemp and casters, with a hair-rigged pellet or piece of luncheon meat as the hookbait, is an effective chub river rig.
Frequently Asked Questions
Is hemp legal to use as fishing bait?
Yes. Hemp seed purchased from tackle shops and used as fishing bait is completely legal in the UK. Some individual fisheries (particularly salmon and trout rivers) may ban certain seed baits – always check the fishery rules.
How much hemp should I introduce per session?
For river roach fishing, a pint to a quart of hemp (approximately half a litre to a litre) is a typical session’s supply as loose feed. For barbel fishing, larger quantities (2-4 pints) are introduced as an initial bed over a barbel swim. For still water roach, much less – perhaps a cup-full introduced gradually.
Can I buy hemp already prepared?
Yes. Pre-cooked hemp in tins or sealed bags is widely available from UK fishing tackle shops. It is significantly more expensive than buying raw seed but removes the preparation step.
Does hemp go off quickly?
Cooked hemp keeps well for 3-4 days in a sealed tub in a cool place. In hot weather, it can ferment and sour within 24-36 hours. If the hemp smells very strongly fermented, it will still catch fish (some anglers prefer it) but discard if mould is visible. Raw dry hemp seed keeps almost indefinitely in a sealed container.
What species respond best to hemp?
Roach are the species most dramatically affected by hemp – large roach shoals respond to regular hemp feeding with intense competition. Dace, chub, and barbel respond almost as well. Bream will take hemp seeds. Carp recognise hemp and eat it but their slower, bottom-rooting style of feeding responds differently to the more competitive smaller species.