Sad looking Hebe

Wayside

Hi there,

I have a Hebe that I put in the front garden last year, which looked great in the spring.  But it looks as if the heart of it is on its way out.  Lots of browning of leaves.

I have tended to not water this plant as much as the rest of the front garden.  So perhaps it's just neglect.  I had assumed the dense canopy might have kept in enough moisture.  I did cut out some of what appeared as dead.

I've a heather below it, that also is very brown.   However I do try and water my two heathers.  The one beside it looks fine.

I've included two images, they aren't great quality, but they might give you an idea: 

 

 

Thanks.