please help id this problem

Could anyone tell me what is wrong with my Hypericum. I have this plant in the garden about 50m away from each other, and both are looking the same, but now other plants are effected this way. Waht is this, Fungi or pest or...?
Thank you fro your help!

 

Have you had many cold nights in the past while?

 

Maybe a virus disease or a phytoplasma?

 

Here at the west coast of Ireland, we have only cold nights, about 5-10 Celsius, and mostly wet. I have tried to cut back both plants comlately to the base, but the fresh growt got the same problem right after the new growt emerged.
No other plants has been shown the same signs.

 

I'd be inclined to get rid of the infected plants before it spreads any more. And afterwards, disinfect anything you use for cutting or digging them.

 

Thanks for the help!