They will grow out quickly again, don't worry! This is what it should look like pruned. This will keep it bushy and prevent it from forming a bare, woody center. In the colder zones, prune in spring.

Does heather plant come back every year?

Only gardeners in frost-free areas can count on Mexican heather (Cuphea hyssopifolia) to come back year after year. The plant, native to Mexico and Guatemala, needs the heat of U.S. Department of Agriculture plant hardiness zones 9 through 11 to thrive.

Does heather come back to life?

Heathers do not regenerate well from old wood, so once they have become woody and leggy, replacement is the best option.