Problems
Something nibbling your nasturtiums or sapping the strength from your celery? Help is at hand!
Below is an alphabetical list of common pests, diseases, disorders and weeds (both their common and their Latin names). If you don’t know where to start, you can also use our search function to help identify what is afflicting your plant or to work out what weed you have and how to deal with it.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
A
Acer gall mite
Aceria aceriscampestris
Aceria cephaloneus
Aceria macrorhyncha
Aclearis variegana
Acorn weevil
Aculops acericola
Aculops fuchsiae
Agriolimax reticulatus
Agrobacterium radiobacter
Agrobacterium tumefaciens
Amphimallon solstitialis
Ants
Aphids – see also Mottled arum aphid
Aphis spp.
Apple and pear canker
Apple scab
Arion hortensis
Arion ater
Armillaria mellea
Aulacorthum circumflexum
B
Banded snail
Basal rot (of daffodils and crocuses)
Big bud (mite)
Black slug
Blackcurrant gall mite
Blackfly
Blennocampa phyllocolpa
Blennocampa pusilla
Blight (referring to aphids)
Blindness
Blossom end rot
Blue mold rots
Blue mould rots
Bolting
Botryosphaeria dothidea
Botrytis bunch rot
Botrytis cinerea – see also rose cankers
Botrytis paeoniae
Botrytis tulipae
Botryotinia narcissicola
Brand canker
Briar scab
Brown canker
Brown chafer
Brown rot
Bulb scale mite
C
Camellia flower blight
Camellia leaf blotch
Camellia leaf spots
Canis familiaris
Capreolus capreolus
Capsid bug
Carnation rust
Caterpillar
Cecidophyopsis ribis
Cepaea hortensis
Cepaea nemoralis
Cercopis vulnerata
Cetonia aurata
Chafer beetle
Chafer grub
Chestnut weevil
Chlorosis of leaves
Chondrostereum purpureum
Chromatomyia syngenesiae
Chrysanthemum leaf miner
Ciborinia camelliae
Cineraria leaf miner
Clathridium canker
Clathridium corticola
Coccus hesperidum
Cockchafer
Cold damage
Common earwig
Common froghopper
Common green capsid
Common spangle gall wasp
Coniothyrium wernsdorffiae
Contarinia quinquenotata
Coral spot
Crane-fly larvae
Crescent-marked lily aphid
Crown gall
Crucifer caterpillar
Cryptosporella umbrina
Cuckoo spit
Cucumber mosaic virus
Cucurbit powdery mildews
Curculio caryae
Curculio elephas
Curculio glandium
Curculio nucum
Curculio occidentalis
Cynips lenticularis
Cynips quercus-baccarum
D
Dama dama
Daylily gall midge
Deer
Deroceras reticulatum
Diplocarpon rosae
Ditylenchus dipsaci
Dogs
Dollar spot
Downey mildew
Dropsy
Drought
E
Earwig
Edwardsiana rosae
Elf circle
Elf ring
Endelomyia aethiops
Erysiphe alphitoides
Erysiphe cichoracearum
Euonymus scale
European rabbits
Evergestis forficalis
F
Fairy circle
Fairy rings
Fallow deer
Fasciation
Field slug
Flea beetle
Foot and root rots
Forficula auricularia
Frog spit
Froghopper
Frost damage
Fruit tortricid
Fuchsia gall mite
Fusarium oxysporum f.sp. narcissi
G
Gall mite
Garden chafer
Garden pebble moth
Garden rose tortricid moth
Garden rose tortrix moth
Garden slug
Garden snail
Glasshouse mealybug
Glasshouse whitefly
Gray mould – see also rose cankers
Greater bulb fly
Greenfly
Grey mould – see also rose cankers
Greenhouse mealybug
Greenhouse whitefly
Grey bulb rot
Grey squirrel
H
Heliz aspera
Hemerocallis gall midge
High temperatures
Honey fungus
Hoplia philanthus
Horse chestnut scale
Hygromia striolata
I
Impatiens downy mildew
Inter-veinal chlorosis
Intumescence
J
K
L
Laetisaria funciformis
Large bulb fly
Large cabbage white butterfly
Large narcissus fly
Large striped flea beetle
Large white butterfly
Leaf miners – see also chrysanthemum leaf miner
Leaf spots
Leafhoppers
Leaf-cutter bees
Leaf-rolling rose sawfly
Leatherjackets
Leptosphaeria coniothyrium
Lesser willow sawfly
Lilioceris lilii
Lily beetle
Lily leaf beetle
Low temperatures
Lygocoris pabulinus
M
Marasmius oreades
May bug
Meadow froghopper
Mealybug (glasshouse/greenhouse)
Megachile centuncularis
Meligethes species
Melolontha melolntha
Merodon equestris
Microsphaera alphitoides
Milax spp.
Mirid
Monilinia fructigena
Monilinia laxa
Mottled arum aphid
Mouse
Muntjac deer
Muntiacus reevesi
N
Narcissus bulb fly
Narcissus basal rot
Narcissus eelworm
Narcissus hoverfly
Narcissus smoulder
Narcissus yellow stripe virus
Nectria cinnabarina
Nematus pavidus
Neomyzus circumflexus
Neonectria galligena
Nephrotoma maculata
Neuroterus baccarum
Neuroterus lenticularis
Neuroterus malpighii
Neuroterus quercusbaccarum
Nut weevil
Nutrient deficiencies
O
Oak powdery mildew
Oedema
Onion eelworm
Oryctolagus cuniculus
Otiorhyncus sulcatus
P
Pecan weevil
Penicillium spp. including P. gladioli
Peony grey mould blight
Peony wilt
Peronospora sparsa
Pestalotiopsis guepini
Philaenus spumarius
Phlox eelworm
Phragmidium tuberculatum
Phragmidium mucronatum
Phylloertha horticola
Phyllosticta camelliae
Phyllotreta spp.
Phymatocera aterrima
Phytomyza syngenesiae
Pieris brassicae
Pixie ring
Planococcus citri
Plant lice
Plasmopara obducens
Podosphaera leucotricha
Podosphaera pannosa
Podosphaera xanthii
Pollen beetles
Powdery mildews
Powdery mildew of apples
Prunus bacterial canker
Pseudococcus calceolariae
Pseudococcus longispinus
Pseudococcus viburni
Pseudomonas syringae pv. mors-prunorum
Pseudomonas syringae pv. syringae
Pulvinaria regalis
Q
R
Rabbits
Rat
Red and black froghopper
Red lily beetle
Red spider mite
Red squirrel
Red thread
Rembrandt virus
Replant sickness
Rhizobium radiobacter
Rhizoctonia tuliparum
Rodent
Roe deer
Root and foot rots
Rose black spot
Rose cankers
Rose chafer
Rose downy mildew
Rose leafhopper
Rose leaf-rolling sawfly
Rose powdery mildew
Rose rust
Rose skeletoniser
Rose slug sawfly
Rose slugworm
Rose thrips
Rosellinia necatrix
Roseslug
Rusts
S
Sawflies
Scab (apple)
Scale insects – see also soft scale and euonymus scale
Scarlet lily beetle
Sclerotinia homeocarpa
Sciurus carolinensis
Sciurus vulgaris
Sclerotinia narcissicola
Serica brunnea
Silver leaf
Slime flux disease
Slugs
Snails
Snake spit
Soft scale
Solomon’s seal sawfly
Sooty mould
Spangle gall wasp
Spathegaster baccarum
Spathegaster interruptor
Spathegaster varius
Sphaerotheca fuliginea
Sphaerotheca pannosa
Spindle Berry Scale
Spindle Tree Hard Scale
Spittlebug
Squirrel
Stem and bulb eelworm
Stem canker
Stem eelworm
Steneotarsonemus laticeps
Stereum purpureum
Strawberry snail
Summer chafer
Sycamore gall mite
T
Tarsonemus approximatus Banks
TBV
Tetranychus urticae
Thrips
Thrips fuscipennis
Thunder bugs
Thunder flies
Tipula olericea
Tipula paludosa
Trialeurodes vaporariorum
Trichia striolata
Tulip breaking virus
Tulip eelworm
Tulip fire
Tulip grey bulb rot
Turnip flea beetle
Two spotted spider mite
Typhlocyba rosae
U
Unaspis euonymi
Uromyces dianthi
V
Venturia inaequalis
Vine weevil
W
Welsh chafer
Wet wood
White grub
White root rot
Whitefly
Wind pruning
Wind scorching
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