Plant Parasites of Europe

leafminers, galls and fungi

genus Gardenia

organ parasitic mode stage note taxonomic group parasite
flower hidden Thripidae Pezothrips kellyanus
leaf vagrant Tetranychidae Tetranychus urticae
leaf scale Coccidae Coccus hesperidum
root film Pythiaceae Phytopythium vexans
stem kanker Diaporthaceae Diaporthe gardeniae
root film Ceratobasidiaceae Rhizoctonia solani
leaf leaf spot Mycosphaerellaceae Septoria gardeniae
systemic down Sclerotiniaceae Botrytis cinerea
leaf leaf spot Mycosphaerellaceae Ramularia gardeniae
leaf scale Aleyrodidae Dialeurodes citri
leaf scale Coccidae Protopulvinaria pyriformis
systemic vagrant Tenuipalpidae Brevipalpus phoenicis
leaf vagrant Sphingidae Daphnis nerii
leaf scale Aleyrodidae Aleuroclava jasmini
leaf scale Aleyrodidae Trialeurodes vaporariorum


the part of the plant that most conspicuously is hit by the parasite

all buds: both flower buds and leaf buds
flower: also inflorescence
leaf: also needle, phyllodium, petiole
leaf bud: also unfolding young leaf
fruit: also seed
root: also root stock, runners
root collar: also the lowest part of the stem
stem: also culm, the lower part of the peduncle, in grasses also leaf sheath
systemic: the entire above-ground plant.


borer: larva living internally, almost no outwards signs
down: 0.5-2 mm high fungal down
film: very thin cover of fungal tussue
gall: swelling and/or malformation
grazer: feeding at the outside of the plant
leaf spot: discoloured, often ± necrotic, generally not galled, sign of a fungus infection
miner-borer: larve initially makes a mine, lives as a borer later
pustule: plug of fungal tissue, generally brown-black and < 2 mm
stripe: longitudinal line of fungal tissue in a grass leaf
vagrant: (aphids, mites) living freely on the plant, at higher densitiy causing malformations.


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The host plant spectre of a parasite is rarely known exhaustively; this applies in particular at the species level. It is advisable therefore to check at least also the list of all parasites of this genus.


Last modified 8.xi.2023