Troubleshooting
Pyramidal Bugle problems — and how to fix them
Pyramidal Bugle (Ajuga pyramidalis) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Root and crown rot from wet soil
This is the most common cause of plant death. Ajuga pyramidalis is far less tolerant of moisture than A. reptans. Plant only in sharply drained soil or raised beds, never in heavy clay or areas prone to standing water.
Congested clumps
Older clumps become congested and woody in the centre, reducing flower production. Divide every 3–4 years in late summer after flowering to maintain vigour and the characteristic upright pyramid form.
Slugs on emerging flower spikes
Emerging flower spikes are attractive to slugs in spring. Apply iron phosphate pellets around the base of plants in early spring before spikes emerge to protect this season's display.
Prevent pyramidal bugle problems before they start
Most pyramidal bugle issues are care-mismatch, not bad luck. Dial in the basics:
Pyramidal Bugle problems — FAQ
Why is my pyramidal bugle root and crown rot from wet soil?
This is the most common cause of plant death. Ajuga pyramidalis is far less tolerant of moisture than A. reptans. Plant only in sharply drained soil or raised beds, never in heavy clay or areas prone to standing water.
Why is my pyramidal bugle congested clumps?
Older clumps become congested and woody in the centre, reducing flower production. Divide every 3–4 years in late summer after flowering to maintain vigour and the characteristic upright pyramid form.
Why is my pyramidal bugle slugs on emerging flower spikes?
Emerging flower spikes are attractive to slugs in spring. Apply iron phosphate pellets around the base of plants in early spring before spikes emerge to protect this season's display.