Citrus Leaf Miner

Leafminers are particularly damaging to young small trees and potted citrus. Damage to large established trees is generally regarded as superficial however there is some new research indicating their tunneling can allow diseases to infect plants.

Plants Attacked

All citrus plants are attacked by citrus leafminer including lemons, oranges, limes and the native finger limes.  They can also attack other plants in the citrus family (Rutaceae), like murraya, but this isn’t as common.

Organic Control Methods for Citrus Leafminer

There are several options depending on how severe the outbreak is:

• If possible remove affected leaves by hand and place in rubbish bin
• Spray new growth with Eco-Oil ensuring good coverage (top and bottom of leaves). Spray every 5-14 days whenever new growth is present to deter the moth laying fresh eggs.
• Alternatively spray new growth with Eco-Neem.  Eco-Neem will penetrate slightly into the leaf and actually kill the juvenile leafminer providing broader protection. Again apply every 5 to 14 days while new growth is present and ensure good coverage.

NOTE: Female citrus leafminers only lay eggs on early flushes of new growth.  Whenever new growth is present employ the above methods to prevent or minimise damage and keep your citrus happy and healthy.