Join the RHS today and support our charitable work
Free personalised gardening advice
RHS members get reduced ticket prices
RHS members get free access to RHS Gardens
Free entry to RHS members at selected times »
Reduced prices on RHS Garden courses and workshops
020 3176 5800
Mon – Fri | 9am – 5pm
Help us achieve our goals
Join the RHS today and support our charity
Most hollies have some leaves with evidence of a leaf mining fly, this has little impact on the plant’s growth or vigour.
Holly leaf miner (Phytomyza ilicis) on Holly (Ilex aquifolium). Credit: RHS/Entomology.
Holly leaf miner is a small fly with larvae that cause discoloured blotches by feeding inside holly leaves.
Signs that holly leaf miner has been active include;
Grubs of the holly leaf miner tunnel inside the leaves. There is one generation a year, and the adult flies lay eggs on the new foliage in May to June. When the larvae have completed their feeding in the following spring, they pupate inside the leaf mines.
Apple leaf miner
Astrantia leaf miner
Beet leaf mining fly
Brown leaves on woody plants
Celery leaf mining fly
Echinops leaf miner
Hellebore leaf miner
Holm oak leaf-mining moths
Horse chestnut leaf-mining moth
Holly leaf blight
Laburnum leaf mining moth
Leaf damage on woody plants
Lilac leaf mining moth
Phytophthora ramorum and P. kernoviae
Pyracantha leaf-mining moth
Sempervivum leaf miner
the RHS today and get 12 months for the price of 9
RHS members can get exclusive individual advice from the RHS Gardening Advice team.
We're a UK charity established to share the best in gardening. We want to enrich everyone's life through plants, and make the UK a greener and more beautiful place.