Troubleshooting
Sugar and Spice Tiarella problems — and how to fix them
Sugar and Spice Tiarella (Tiarella 'Sugar and Spice') 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.
Leaf scorch on cut foliage
The deeply lobed leaves brown readily in excess sun or dry soil. Keep in shade with even moisture and mulch.
Crown rot
Cold, wet, poorly drained soil rots the crown in winter. Plant in well-drained humus-rich soil and prevent water from pooling.
Powdery mildew and leaf spot
The full foliage mound traps humidity; stagnant air encourages fungal disease. Space plants, improve airflow, and water at the base.
Sparse flowering
Excess shade or over-feeding with nitrogen reduces the bloom. Provide brighter dappled light and feed sparingly to maximise the spires.
Prevent sugar and spice tiarella problems before they start
Most sugar and spice tiarella issues are care-mismatch, not bad luck. Dial in the basics:
Looking for sugar and spice tiarella in general rather than its problems? Read the full sugar and spice tiarella care guide — light, water, soil and feeding.
Sugar and Spice Tiarella problems — FAQ
Why is my sugar and spice tiarella leaf scorch on cut foliage?
The deeply lobed leaves brown readily in excess sun or dry soil. Keep in shade with even moisture and mulch.
Why is my sugar and spice tiarella crown rot?
Cold, wet, poorly drained soil rots the crown in winter. Plant in well-drained humus-rich soil and prevent water from pooling.
Why is my sugar and spice tiarella powdery mildew and leaf spot?
The full foliage mound traps humidity; stagnant air encourages fungal disease. Space plants, improve airflow, and water at the base.
Why is my sugar and spice tiarella sparse flowering?
Excess shade or over-feeding with nitrogen reduces the bloom. Provide brighter dappled light and feed sparingly to maximise the spires.