Erica turns brown and dead in summer
I am first-time gardener for Erica and Calluna. I'm living in Zone 5a, Michigan. I bought several cultivars of Erica and Calluna this recent spring. All were delivered in excellent condition, mostly leaves and apparently healthy with some winter damage. I prepped the soil where I later planted these Erica and Calluna in mostly full sun. I kept on the watering schedule when the soil was dry. Suddenly, several of the Erica cultivars just appeared to start dropping the leaves. It was around late June-beginning July then. Now I have just twigs on the ones I think are dead. What has just happened? These haven't even seen their first Michigan winter yet .... I was quite discouraged. Thanks.