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Jul 23, Learn how to prune Heaths and Heathers from renowned pruning guru Cass Turnbull, founder of PlantAmnesty. PlantAmnesty's mission is to end the senseless tor. 1.

Bring out clippers or shears toward summer's end, when flowers begin to fade on the Scotch heather. Summer weather will affect the length of the bloom period, but act before new buds form in.

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Apr 05, Maintenance and Pruning Heather needs very little fertilizer if any. In fact, it will thrive in poor soil, so after the initial fertilizer at planting time, just leave it alone. Prune annually, either in the winter after blooming, or in the spring before buds have shrubpruning.barted Reading Time: 3 mins. Feb 18, A: Although these colorful flowering shrubs are both members of the Rhododendron family, they are different in that heathers (Calluna) bloom in Author: Ciscoe Morris.

Prune the heather shrub with pruning shears once a year, in the late summer or early fall, when its flowers start to fade. Cut off the flowering stem at the base, where it emerges from the shrub.