Posted: 08/01/2014 at 08:41
Yes, Erica carnea and darleyensis varieties will thrive in alkaline soils. ,these winter flowering heathers are lime tolerant. Surprised at how high your ph reading is though.
If planting these heathers you add mychorrizal fungi to the planting holes and mix in some ericaceous compost (not necessary but it's what I would do) I'm sure they will do well.
I love a carnea variety called Foxhollow. It has clear yellow foliage with red/orange new growth tips. Vivelli has red flowers and dark foliage. Ann Sparkes has orange foliage. Lots of lovely varieties to,choose from. Darleyensis and Mediterranea varieties are taller and help to create nice contrasting mounds