Plant deteriorated in 3 days. Saw some tiny specks on the leaves. Any suggestions?
can you get any pictures underneath the leaves? the under side is where the bugs hide. Looks like leafminers to me. They make make trails on the leaves like that middle picture.
I just had bugs I couldn’t see them without a jewelers loupe. Can you study the bottoms with magnification?
Those white lines on the leaf is typically from leafminers.
Thank you all for the info. Leafmineners. They are on my aloe vera plant to. I also saw some red spiders on OG plant. Gently Washed them off with soap & cotton ball. Miracle if it recovers. I have two more I will observe closely.
Any suggestions on what agent to apply to eradicate Leafminers?
Leafminers is also a general term, they can flies,
moths and or beetles. They are basically larvae that live inside the leaves. Flies for example lay eggs on the leaf, those eggs become larval which feed on your foliage. i’m not sure but i think you have to “extract” them from the leaves.
@Myfriendis410 Any thoughts on how to treat a leaf miner?
@garrigan62 might know. I’ve never treated them.
If you have leaf miners and spider mites already present you should quarantine affected plants and sanitize all plant growing areas in your home ASAP. If you want help with how to do this effectively just say so.
ILGM’s basic explanation of leaf miners here.
More ways to monitor and treat leaf miners include putting a plastic tray under the plant wide enough to catch any pupae that fall from the leaves; check for these daily and crush them. I wouldn’t spray anything for leaf miners as it’s mostly ineffective and many species are resistant now.
I would be more concerned about the spider mites at this point. ILGM has lots of info on controlling them here.
I total agree with You “LEAF-MINERS FOR SURE”
here are a couple of pics of Leaf miners
Solution: How to Get Rid of Leaf Miners on Cannabis Leaves
Now that you know what the damage from a leaf miner looks like on your marijuana leaves, learn how to get rid of them for good!
1.) Remove affected leaves if you can
This won’t fix the problem but since the bugs are actually living inside the leaves you are killing them alongside the leaf they’ve infected.
If you don’t want to remove the whole leaf, you can crush the larva by pressing your fingers together where you see a trail.
Spinosad Products (safe & organic) – Spinosad products are organic and completely harmless to pets, children, and plants. Spinosad products can be
used directly to kill leaf miners by ingestion and should be sprayed liberally anywhere you see leaf miner damage. Although depending on what your
“parent” bug is, Spinosad may not be as effective as other treatments, it does work and it’s very safe for plants, animals and humans!
Recommended: Monterey Garden Insect Spray with Spinosad
Spinosad products are organic and kill leafminers, spider mites, caterpillers and thrips A One-Hand Pressure Sprayer is perfect for misting plants
Spinosad is an organic insecticide made from the fermentation of a specific soil bacteria (actinomycete Saccharopolyspora spinosa) and kills leaf miners
via ingestion or contact by affecting the insect’s nervous system. Spinosad can be a good choice for organic and outdoor growers, because it is very toxi
to leaf miners, but is less toxic to many beneficial insects, bug predators and spiders.
Note: Most spinosad products are effective for only about 24 hours after being mixed with water, so only mix as much as you will need per application.
Anything left over will be waste.
You will need a mister (also called a “One-Hand Pressure Sprayer”) to cover all the leaves evenly when spraying them with spinosad products. Make sure
especially to get any leaves with markings/trails, as it will kill the larva living inside the leaf.
3.) Neem Oil
Neem Oil will leave an unpleasant taste/smell on buds when used to treat flowering plants, so don’t let this stuff get near your buds! There’s also
some evidence Neem oil may be harmful to humans so use with care! That being said, Neem oil is an all-natural remedy that is very effective against
many different types of bugs and mold, including pretty much all leaf miners. You will need a mister (also called a “One-Hand Pressure Sprayer”) to
spray all the leaves evenly, since neem oil and water can separate easily.
Get Neem Oil for your plants on Amazon.com! A One-Hand Pressure Sprayer is perfect for misting plants
4.) BT Spray – If caused by moth / caterpillars
Some types of moths lays eggs that hatch into leaf-tunneling larva before turning into caterpillars and eventually becoming a moth. If you see evidence
of moths or caterpillars on your plants (for example something is also munching on your leaves, you see little black droppings, or you catch a worm in
the act) in conjunction with leaf miner damage, get BT spray immediately.
This biological insecticide contains the bacillus thuringiensis (BT) bacteria which kills larva and prevents caterpillars from being able to eat. This is
one of the most effective ways to kill caterpillars and larva without hurting beneficial insects. As a bonus, it also kills other cannabis pests like
fungus gnats and worms.
Apply a caterpillar BT spray as soon as you see leaf miner damage combined with caterpillars or caterpillar poop.
If in addition to leafminer damage you also see damage like this on the plant where big chunks of leaves are missing, it’s a sign your leaf miners might
actually be caterpillar larva. In that case make sure to use BT spray in addition to any treatments for the leaf miners in particular!
Example of leaf damage inflicted by a caterpillar / inch worm on a marijuana leaf
If the BT spray has no effect after a couple of days, it’s a big sign this could be a different type of bug as BT spray is very effective at killing young
caterpillars and moth larva. If it does seem to help, repeat your treatment every week for as long as you’re still seeing caterpillars or leaf miner damage
(though you can give BT more often if there’s a heavy infestation).
Make sure to thoroughly mist both the tops and bottoms of leaves, and apply again after a heavy rain (since that will wash the BT away). Since BT is harmless
to humans, you can use BT products up to the day of harvest! One thing to keep in mind is BT spray almost instantly stops caterpillars from being able to eat,
but doesn’t kill them directly. So although you may see the caterpillars alive and apparently unharmed after spraying, the BT is still doing its dirty work.
Recommeded: Monterey BT Spray
(though any caterpillar BT product will work!)
Get BT spray on Amazon!
5.) Beneficial Insect Predators – Diglyphus isaea
There is a type of parasitic wasp known as Diglyphus isaea which is a parasite to leafminers and will happily kill them. They can be ordered online if you
want to help reduce leaf miner numbers with nature’s pesticide
6.) Floating row covers
These may not be the best choice for all cannabis growers, but these are very cheap and effective against leaf miners because it physically prevents moths, flies
and beetles from getting to your plants, while still letting light in. You can also water your plants through the netting. These are sometimes used to make mini
“green houses” on the plants, or some grower will just drap them over the plant as they’re so light and airy they don’t really bother the plant.
The one downside is these are much easier to use and are more effective with smaller plants. It becomes difficult to fully cover larger plants. However, for young
plants these can be great! They also protect your plant from wind and some harsh conditions.
Floating row covers look like thin netting or mesh
Example of a “floating row cover” which is a light and airy piece of fabric you can drape over your plants to prevent leafhoppers and other pests from getting to them!
Well that covers it…lol looks like your in good hands…
Thanks for all the useful information. Plant is very stressed due to the leafminers. Have removed the infected leaves. Will observe to see if plant grows new foliage.