Our hebe bushes died after last year's frost. After a year of patiently waiting for the bush to come back we have dug all the soil. As you can see, there is not much depth for the soil. Having said this, the hebe bush was thriving for 9 years until the frost (I also attach a photo from several years ago). The "concrete" drains reasonably well?? and there are buried incoming services for electricity, gas and water, internet underneath so additional excavation is out of the question... I would be grateful for advice on what to plant and how to prepare the soil. I am thinking of a hardy evergreen with small leaves. Possibly, planting japonicus green ... but not sure... It faces west. Looking forward for your suggestions.Thank you