Problem

Hi, i am having a few issues with certain plants mainly hollyhocks it looks like its spread to a rose its nearly dead, i have two more hh at the bottom of the garden and other plants are affected there, any ideas what it is and cure please.

 

A close up of the black dots might help.
It looks like some kind of insect???

Possibly black fly?

 

Many thanks Pete i will take a few more pictures tomorrow,

I am unsure what it is to be honest, the same thing happened to the same plant last year, i have two at the top of the garden last year both plants had the same problem also this year,

This spring i put two more at the bottom of the garden same thing with them,

There's a rose at the side of last years plants and all the leaves have fell off it only a rose left .

 

I do know hollyhocks are pretty susceptible to rust, but I'm just a bit confused regarding the black blobs.

 

Thank you Pete, i never paid any attention when i took the photos, but zooming in it does look like it could be insects, i will have a closer look and take some better pictures, its killing the plants whatever it is.

 

Hi Pete, a few more pictures, what i can make out is this


is turning into this



It looks like its spreading to the leaves and killing the plant.

 

I'm thinking its probably rust, cant see any insect life.

 

Thanks Pete, i never noticed any i will have a better look tomorrow and report back.

 

Thanks Pete I think you've nailed it , no sign of insects, reading through this i will remove them all, shame really but I will find something to replace them with .
https://www.rhs.org.uk/advice/profile?PID=564

 

Hollyhocks are susceptible to rust in their second year or subsequent years' flowering. When I used to grow them I would treat them as biennial and not try to keep them going for another year for this reason.

 

Thank you RW, without reading up i think the problem has caused other plants to start to die including a rose, the HH is the main effected plant so I will remove them and see how things go, I am a big fan of plenty of water that the problem thrives on,

Any suggestions please on similar plants that are less susceptible to problems.

 

I've got some more for you now @shiney