Classification of plants by:
- baby angel's tears
- balloonplant - hairy balls
- balsa touch-me-not
- balsam indian
- barley wall
- barley winter
- bedstraw fen
- bedstraw hedge
- bedstraw lady's
- bedstraw wood
- beet wild
- bellflower clustered
- bellflower creeping
- bellflower fairy
- bellflower ivy-leaved
- bellflower rambling
- bentgrass
- bentgrass black
- bentgrass creeping
- bentgrass dog
- bermudagrass
- betterbur
- bilberry forest
- bindweed black buckwheat wild
- bindweed field
- bindweed hedge
- birch
- birthwort European
- bistort amphibious smartweed water
- bistort common
- bittercress common
- bittercress cuckooflower
- bittercress hairy
- bittercress wavy
- bittersweet
- black widow
- blackgrass
- bladder campion
- bladder-nut tree, European
- blechum
- bloodwort
- bluebell
- borage
- bouquet
- brackenfern
- bramble blackberry dewberry rapsberry
- bristlegrass foxtail green
- bristlegrass yellow pigeongrass
- broad-leaved everlasting-pea
- brome barren
- brome rye - cheatgrass
- bromegrass field
- broom Scotch
- bryony redberry
- bugle carpet
- bugloss common
- bullwort
- burdock greater
- burmarigold trifid beggarsticks
- burnet greater
- burrgrass spiny
- buttercup celeryleaf
- buttercup corn
- buttercup creeping
- butterfly bush
- caltrop common
- campion meadow
- campion red
- campion white
- canarygrass
- canaryweed
- candytuft wild
- carosella - fennel Italian
- carrot queen Annes lace
- carthamus
- castorbean
- cat's ear
- cat's ear common
- celandine greater
- celandine lesser
- chamomile corn
- chamomile stinking mayweed
- chamomile yellow
- charlock mustard wild
- chervil rough
- chickweed common
- chickweed mouse-ear
- chicory
- chrozophora
- cleavers catchweed bedstraw
- clover Berseem
- clover carnatio
- clover red
- clover white
- clubrush common
- cock's foot orchardgrass
- cocklebur rough - common
- cockspur grass barnyardgrass
- colt's-foot
- columbine European
- comfrey common
- comfrey creeping
- coneflowers
- coriander cilantro Arab parsley
- coriander small
- corn gromwell
- corncampion corncockle
- cornflower
- corydalis golden - yellow
- corydalis golden - yellow
- cosmos
- cotton grass common
- couchgrass bearded
- couchgrass quackgrass wheatgrass
- cowslip
- cranesbill cutleaved
- cranesbill longstalked
- cranesbill meadow
- cranesbill roundleaved
- cranesbill small-flowered
- cranesbill wood
- creeping cinquefoil
- cress field
- cress hoary pepperwort
- crocus saffron meadow
- crocus spring
- crosne japanese artichoke
- crosswort
- crownvetch common
- cudweed marsh
- fat-hen - lambsquarter
- fescue alta tall
- fescue meadow
- fescue red
- fescue sheep
- feverfew
- fig tree common
- figwort common
- filaree redstem
- fingergrass crabgrass hairy
- fingergrass crabgrass smooth
- flax
- fleabane annual
- fleabane canadian horseweed marestail
- fleabane common
- fleabane flaxleaf
- fleece China
- fluellen round-leaved
- fog creeping velvetgrass German
- fool's parsley
- forget-me-not field
- foxglove
- foxtail bristly
- fumitory common
- hairgrass wavy
- harebell
- hawkbit bristly
- hawkbit lesser - hairy
- hawksbeard beaked
- hawksbeard marsh
- hawksbeard narrowleaf
- hawksbeard rough
- hawksbeard smoot
- hawkweed
- hawkweed common
- hawkweed mouseear
- hawkweed narrowleaf
- hawthorn single seed
- heather
- hedgenettle betony
- hedgeparsley
- heliotrope European
- hellebore stinking
- helleborine
- hemlock poison
- hempnettle
- hempnettle common
- henbane
- herb Robert
- hogweed
- hogweed giant
- holly European
- hollyhock mallow rose
- hollyhocks pale
- honesty
- honeysuckle perfoliate
- honneysuckle Himalayan
- hop common
- hops Japanese
- horse-mint
- horseradish
- horsetail field
- hyacinth grape
- mad-dog weed
- madder field
- madder wild
- magenta spreen - lambsquarters
- malevolence, purple devil
- mallow common
- mallow musk
- mare s-tail, common
- marigold marsh
- marigold pot
- marijuana hemp
- marjoram
- marshmallow
- martagon lily Turks cap lily
- mayweed scented
- mayweed scentless
- meadow bleugrass annual
- meadow bleugrass smooth
- Meadow vetchling
- meadowsweet
- medic black
- melilot tall sweetclover
- melilot white sweetclover
- mercury annual
- mercury dog's
- mignonette white
- milkwort common
- mint corn
- mint water
- mint, pepper
- mistletoe
- mockstrawberry Indian
- moneywort
- monk's-hood
- monkey-flower yellow
- moorgrass purple
- morningglory
- moss
- mouseear chickweed - field
- mouseear hairy
- mousetail
- mugwort
- mullein black
- mullien common
- mustard hedge
- mustard treacle
- panicgrass millet proso
- pansy
- pansy field
- parsley cow
- parsley-piert
- parsnip wild
- paspalum
- pasqueflower
- passionflower maypop
- pea
- pea tuberous
- pea wood
- pearlwort procumbent
- pendulous - dropping sedge
- pennycress field
- perennial honesty
- periwinkle large
- periwinkle lesser
- persicaria pale smartweed pale
- Peru apple
- phacelia
- pigweed prostrate
- pimpernel scarlet
- pinappleweed
- plains coreopsis calliopsis
- plantain broadleaved
- plantain buckhorn
- pokeweed common
- poppy California
- poppy common
- poppy long-headed
- poppy opium
- poppy oriental
- potato
- primrose common selfheal
- procumbent woodsorrel creeping oxalis
- prosopis
- purslane
- radish wild
- ragwort common
- ragwort Fuchs
- ragwort wood
- ransons
- rapeseed
- raspberry bush
- red-seeded dandelion
- redshank smartweed ladsysthumb
- reed common
- rockcress hairy
- rockcress sand
- rocket intermediate - yellow
- rocket London
- rocket sand wall perennial
- rocket white
- rocket yellow
- rose dog
- rose moss
- rush flowering
- rush soft
- rush toad
- rye
- ryegrass Italian
- ryegrass perennial
- sage common
- sage wood
- Salomon's-seal
- Salomon's-seal
- salsify meadow goatsbeard
- sandwort fine leaved
- saxifraga rue-leaved
- scabious field bleuebuttons
- scotch thistle
- sedge
- shattercane
- shell flower
- shepherd's-needle
- shepherd's-purse
- silkybent loose windgrass
- silverweed cinquefoil
- skullcap common marsh
- snakeroot
- snapdragon dwarf
- snapdragon great
- snowdrop
- soapwort bouncingbet
- soldier gallant galinsoga
- soldier shaggy galinsoga
- sorrel French
- sorrel green
- sorrell sheep's
- sowthistle perennial
- sowthistle prickly spiney
- sowthistle smooth annual
- spearwort lesser
- speedwell corn
- speedwell creeping
- speedwell field
- speedwell germander
- speedwell ivy-leaved
- speedwell Persian
- speedwell spiked
- spelt
- spikenard ploughman's
- spinach
- spleenwort maidenhair
- spring fumewort
- springbeauty minerslettuce
- spurge caper wolfsmilch spring-
- spurge cypress
- spurge dwarf
- spurge garden - petty
- spurge painted
- spurge Portland
- spurge sun
- spurge wood
- spurrey corn
- St John's wort common
- St John's wort marsh
- stachys hedge
- star of Bethlehem
- stichwort grass-leaved
- stichwort starwort easterbell
- sticky bartsia glandweed yellow
- stonecrop, rock
- stonecrops creeping
- strawberry wild
- sunflower
- sweet alyssum
- sweet alyssum
- sweetclover field - yellow
- swine-cress
- swine-cress lesser
- sycamore Maple
- tabacco
- tansy common
- teasel
- teasel cutleaf
- teasel small
- teesdele violet
- thale-cress
- thistle bull
- thistle cabbage
- thistle Canada
- thistle marsh
- thistle plumeless
- thistle St Marys
- thornapple jimsonweed
- thyme
- tickseed hyssopleaf
- timothy
- toadflax field
- toadflax ivyleaved
- toadflax prostrate
- toadflax yellow
- tobacco Virginian
- treemalow
- treemalow perennial
- trefoil birdsfoot
- triticale
- two-leaf squill
- wallpepper stonecrop biting
- water elder
- water figwort
- water-lily white
- waterarcher - arrowhead common
- watercress
- watercress fool's
- waterpepper
- waterstarwort
- wayfaring tree
- weld
- wheat
- wheat one-grained
- wildoat
- willow
- willowherb American fireweed
- willowherb great willowweed hairy
- willowherb little flower
- willowherb rosebay fireweed
- willowherb square stalked
- wiregrass goosegras
- woodruff
- woodruff field
- woodsorrel white procumbent
- woundwort
- woundwort betony
polygonum hydropiper
Family
polygonaceae
English name
waterpepper
French name
renouée poivre d'eau
Dutch name
waterpeper
German name
Knoeterich, Pfeffer-
International code
