Most Common Leek Pests & Diseases

You need support to get rid of leek pests and diseases in your garden?

Make sure to check out all the simple but yet effective ways to control leek plant diseases and pests in this article!

Leek Pests

PestHow to control it
Leek mothMoths are a major issue when growing leeks. You can get rid of moths by using insecticidal soap or spraying neem oil onto the leaves of your plants.
CaterpillarCaterpillars are also quite common on leek plants. Thus, make sure to find tips on how to control caterpillars.
LooperSimilar to caterpillars, loopers may also do great damage to leek plants. Hence, make sure to also inform yourself about how to get rid of loopers in your garden.
BugsThere are also several bugs that will be present near leek plants. You can get rid of those bugs by using diatomite, insecticidal soap or neem oil.
Leaf minersLeaf miners may also try to feed on leek plants. You can control leaf miners by using insecticidal soap or other pesticides.
ThripsThrips may also be present when growing leeks. Hence, also make sure to get information on how to get rid of thrips on garden plants.
MaggotsAlthough rare, maggots may also try to feed on leek plants. Thus, also get some information on how to control maggots in your garden.
SlugsSlugs and snails may also take a bite of leeks. Hence, make sure to also inform yourself on how to get rid of snails and slugs.

Leek Diseases

DiseaseHow to control it
Plant rustRust may become an issue when growing leeks. Thus, make sure to inform yourself on how to get rid of rust on garden plants.
MoldMold is quite common on leeks if you don’t assure good air circulation. Hence, make sure to also get detailed information on how to get rid of plant mold.
Damping-offYou can prevent the damping-off of your seedlings by improving germination conditions and making sure that you water the seeds less often.
Leaf spotLeaf spot may also become an issue while growing leek. Hence, make sure to also get some information on how to get rid of leaf spot on your plants.
BlightBlight may be another problem you may have to deal with when growing leeks. Therefore, make sure to also inform yourself on how to control blight.
Pink rootPink root may also occur on leek plants. You can control pink root by improving soil conditions, watering leeks less often and you may also want to try some pesticides.
Downy mildewDowny mildew may be another issue when growing leeks at home. You can control downy mildew by using fungicides from the garden center.
White rotWhite rot may lead to the decay of leek plants. However, there is no easy treatment for it and you should rather get rid of infested plants as soon as possible to avoid the spread of diseases in your garden.
Purple blotchSince purple blotch is a fungal disease, you can get rid of it by using a suitable fungicide from the garden center.

Leek Pests & Diseases – Summary List

PestsDiseases
CaterpillarsMold
LoopersRust
BugsWhite rot
Snails and slugsPurple blotch
ThripsDowny mildew
MaggotsPink root
Leaf minersDamping-off
MothsBlight
Leaf spot

How to deal with Leek Pests & Diseases?

Now that you know how to treat leek pests and diseases, you may also want to have a look at my growing leek FAQ section and my leek grower’s guide on how to grow leeks from seed to harvest step-by-step.

Sources

https://en.wikipedia.org/wiki/Leek

Own experience.

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