Box blight??

I’ve looked on here & tried searching elsewhere but I can’t find any clear photos that show a contrast between box blight & the box caterpillar damage.

I’m thinking this is a bad case of blight? I don’t see any caterpillars or webs but maybe it’s too early for them?

 

The things that look like webs are dead leaves from near by trees btw !

 

The caterpillars are extremely adept at hiding, believe me I know !
I think they generally don't appear until April/May, but depending on where you live they could have started early.

Has this damage appeared recently ?

 

That's last years caterpillar damage.
A picture of mine today.

There are no visible caterpillars now, it's too early.

 

So an excellent time to give them a preventative spray of BT if you can get hold of it. Especially if you're having a dry spell.