Hop Pests ID thread: Pics, descriptions and solutions

[stonebrewer]

Those look more like moth eggs to me. What kind of moths do you have in the Columbus area? I would google search for "xxx moth eggs" and I suspect you will find a match.

Cheers!

 

[whitehause]

Anyone have any clue what these are? There are lots of bugs clustered together here along with some eggs.

Looks like possible lady bugs, but I'd cut that leaf out and put it in a jar. If they look like ladybug larvae when they are done hatching, put em back on the plant.

 

[DubBrew]

Anyone have any clue what these are? There are lots of bugs clustered together here along with some eggs.

So my wife works for a company with some bug experts available occasionally. She took this picture to work and they told her they were stink bug larve. I pulled the leaf off and threw it away. They recommended Ortho Elementals Insecticidal Soap.

 

[stonebrewer]

I use Surround which is a form of kaolin clay (same stuff that is in kaopectate). My biggest problem is Japanese beetles and this discourages them from dining on my hops. Good for fruit trees as well...

 

[MeanDeuce]

Any idea what these guys are? They look like baby stink bugs to me. Only on my hops which now have a massive explosion of mites due to the rain we've had. Blasted them with neem so hopefully that helps.

 

[MeanDeuce]

so further research suggests nymph stink bugs of the brown or green variety.

any other ideas besides neem?

 

[Stevo2569]

so further research suggests nymph stink bugs of the brown or green variety.

any other ideas besides neem?

I had some critters that looked like that last year. I used organocide on them and the aphids that were trying to set up shop and it worked very well. I don't know what they were but they were causing some damage so they had to go.
Good luck.

 

[wfowlks]

So I have been seeing some flies and what looks like honeybees stuck to my hops as they die. I am not sure why... I didnt think that Hops were carnivorous:




Not lady bugs: Here is a picture of some Stink bug larvae, verified via googlehttp://pestcontrolcenter.com/blog/?p=1174:

 

[MeanDeuce]

That second picture is definitely what those guys were. I haven't seen any more today since spraying the Neem and sliced them in half with my snips.

 

[Tangelo]

Anyone have problems with flies and wasps? Depending on the day my plants are over run with one or the other. SWBO isn't too happy.

 

[stonebrewer]

I see flies and wasps on mine a lot, but don't think they are doing anything other hanging out. I have grown hops for a couple years now and don't think they are a problem...

 

[Tangelo]

I'm not worried they are hurting the plant, SWMBO is annoyed there are dozens of them at all times.

 

[Feurhund]

Already harvested some but this is the state they have come to. Had them on irrigation and ground is a little damp and also applied some slow release fert. It has been hot, but they only get half day sun. Any ideas?

 

[JimTheHick]

Already harvested some but this is the state they have come to. Had them on irrigation and ground is a little damp and also applied some slow release fert. It has been hot, but they only get half day sun. Any ideas?

Are those centennial? Looks a lot like mine. Book I have suggests that it's a mildew problem that's killed the leaves. They were white flecked, now look just like yours.

 

[Stevo2569]

Already harvested some but this is the state they have come to. Had them on irrigation and ground is a little damp and also applied some slow release fert. It has been hot, but they only get half day sun. Any ideas?

Mine get that way after harvest as well. I figured it was the heat plus stress from pickin.

 

[stonebrewer]

Die off is normal this time of year. Cycle of life...leave them alone until all the leaves are gone, then hack them back for next year. Cheers!

 

[Rundownhouse]

I found these critters chewing holes in the leaves of my second-year plant. I believe it's the caterpillar of the Eastern Comma butterfly, also known as the Hop Merchant. They hang out on the undersides of the leaves. So far, the plant seems to be outgrowing the damage, but I've been hand-picking the ones I can reach just to be on the safe side.

I've got these little guys on my centennial. Aggravating!

 

[HALIFAXHOPS]

neem oil or bio-smash works great.

 

[wfowlks]

I like dish soap mixed with water in a spay bottle, that way you don't worry about burning the leaves

 

[HALIFAXHOPS]

neem oil or bio-smash works great.

Had a few pm"s about what is bio-smash. Make a fist and splat!

 

[Kahless]

Will this thread do for discussing disease as well as bugs?

I have some growth on my biggest, previously happiest leaves:

Last Thursday I moved my hops from a gallon planter indoors into the rised beds outdoors. The plant was delicate at first and so in wanted it to be strong before putting it outside (particularly to avoid over watering the roots as we can get a lot of water here [near west coast of Scotland]).

The biggest leaves have this growth which rapidly appeared over the weekend while I was away. There is general wind between 5-12 mph, and humidity has been between 70-80%. Temperatures have been between 15 and 20, but I have a clear plastic sheet suspended over the plant on one side to provide a bit more warmth while not getting in the way in terms of airflow.

It is spreading fast. I'm worried that it is powdery mildew.

Also, one of the heads has fallen off. It almost looks like it has been burnt where it fell off. I couldn't find anything that looks like that on the wikipedia list of hops diseases.

Here are a few more pictures including a bit more back story to the plant.

The early leaves when i got it look like this

but none of them have large white patches and I'm afraid to cut off the biggest, once healthiest looking leaves!

 

[bristela]

Just wondering if anybody has any idea what these guys are? The first pic is of the apparent damage from above with the second being all of the little caterpillars on the underside. I obviously cut the leaf off and disposed of it and haven't yet seen any signs of any more.

 

[BPO]

Found a bunch of caterpillars this weekend. Not sure what type it is.

 

[PapaBearJay]

Just wondering if anybody has any idea what these guys are? The first pic is of the apparent damage from above with the second being all of the little caterpillars on the underside. I obviously cut the leaf off and disposed of it and haven't yet seen any signs of any more.

That is thrip damage.

 

[Phlyborn]

I found this on my cascade tonight. Any idea what it might be?


Sent from my iPhone using Home Brew

 

[Phlyborn]

Found a few of these but this is the largest of them eating the hops cone. Any ideas on what it is and how to prevent them next year. Also what would happen if I missed them and they made it into the brew?


Sent from my iPhone using Home Brew

 

[cupanoodles]

Hi folks, long-time lurker here with some pics. This is 3rd year growth and our first good harvest. My plants were definitely infested with spider mites the last couple years and but this year I was able to stave them off with predatory mites and lady bugs for long enough for plants to grow large. I'm starting to harvest now and finding quite a few cones with what holes in leaves near the base of the cone and withered, eaten out tops of the cones. There are small, hard black dots that I assume are excrement from whatever's eating the cones as they are definitely not alive (I crushed a few to be sure). I also found a very small number of the white dots like the ones on my finger there that are definitely egg cases for something. I pulled the damaged center out of one cone and that's what you see me dangling with the black dots attached and the whole thing held together by some kind of web-like material. I didn't think spider mites did this kind of damage! Any advice on what's eating my hops or how to prevent would be greatly appreciated!

 

[m_sell31]

These are pictures from another thread. I had the same issue in my cascades at harvest this year. holes with a little webbing and then those brown egg like things or full on small green caterpillars inside. Lost a lot of beautiful hops.

 

[sibort]

Eanyone ever seen eggs like this? Start as gray and transition to white. Any help would be appreciated

 

[Wesmando]

I use Surround which is a form of kaolin clay (same stuff that is in kaopectate). My biggest problem is Japanese beetles and this discourages them from dining on my hops. Good for fruit trees as well...

Does the surround stay on through a rain?