How to prune agapanthus 'navy blue'

Late summer, immediately after flowering. Use clean secateurs to cut spent flower stems flush with the base. Remove yellowed or dead leaves at any time. Do not cut into healthy foliage or divide the clump more than necessary, as 'Navy Blue' blooms best when slightly pot-bound or undisturbed.

Annually (deadheading); foliage tidy as needed. Agapanthus 'Navy Blue' requires very little pruning. Deadhead spent flower stems by cutting them to the base once blooms fade, which keeps the plant tidy and may encourage a secondary flush. Remove any dead or damaged foliage as it appears. Avoid cutting back healthy green leaves — the plant stores energy in them.

Use clean secateurs to cut spent flower stems flush with the base. Remove yellowed or dead leaves at any time. Do not cut into healthy foliage or divide the clump more than necessary, as 'Navy Blue' blooms best when slightly pot-bound or undisturbed.