Classic companion planting with heather often includes rhododendrons and azaleas. These plants crave the same acidic soil and consistent moisture on which heathers thrive. You can even fertilize heathers and heath with the rhododendron foods on the market with excellent results.Click to see full answer. Keeping this in consideration, can lavender and heather be planted together?Smaller flowering plants compliment Heather and bloom at different times, thereby extending the bloom show. The look of Lavender and Heather together is a real showstopper. can you split heather plants? Would never split them. Similarly, you may ask, what to do with Heather after flowering? Limit pruning of Erica, Calluna and Daboecia to trimming faded flowering stems back to bases straight after flowering (pruning group 10). Heathers do not regenerate well from old wood, so once they have become woody and leggy, replacement is the best option.Will Heather survive winter?This small evergreen shrub blooms with white, pink, red, purple and gold flowers. They’re quite small, but because there are so many of them, winter heather still brings plenty of life and colour to your garden. Winter heather also works well in containers, (hanging) baskets and pots. The flowers bloom until April.