Troubleshooting
Heuchera 'Northern Exposure Amber' problems — and how to fix them
Heuchera 'Northern Exposure Amber' (Heuchera 'Northern Exposure Amber') 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.
Crown rot in wet winters
Even the hardy 'Northern Exposure' series can succumb to crown rot in waterlogged soil; excellent drainage is non-negotiable in winter-wet gardens.
Vine weevil
Root-eating grubs remain a risk even in northern gardens; apply biological nematode controls (Steinernema kraussei) in early autumn while soil is still warm.
Frost heave
Shallow-rooted crowns can be pushed out of the ground in harsh freeze-thaw cycles; mulch the base lightly in autumn and firm back down after each thaw.
Botrytis in cool, wet summers
Cool, wet conditions with restricted airflow encourage grey mould on leaves and stems; remove affected material and improve spacing.
Slug damage
Spring shoots are attractive to slugs; apply slug pellets or a grit barrier as growth emerges in early spring.
Prevent heuchera 'northern exposure amber' problems before they start
Most heuchera 'northern exposure amber' issues are care-mismatch, not bad luck. Dial in the basics:
Heuchera 'Northern Exposure Amber' problems — FAQ
Why is my heuchera 'northern exposure amber' crown rot in wet winters?
Even the hardy 'Northern Exposure' series can succumb to crown rot in waterlogged soil; excellent drainage is non-negotiable in winter-wet gardens.
Why is my heuchera 'northern exposure amber' vine weevil?
Root-eating grubs remain a risk even in northern gardens; apply biological nematode controls (Steinernema kraussei) in early autumn while soil is still warm.
Why is my heuchera 'northern exposure amber' frost heave?
Shallow-rooted crowns can be pushed out of the ground in harsh freeze-thaw cycles; mulch the base lightly in autumn and firm back down after each thaw.
Why is my heuchera 'northern exposure amber' botrytis in cool, wet summers?
Cool, wet conditions with restricted airflow encourage grey mould on leaves and stems; remove affected material and improve spacing.
Why is my heuchera 'northern exposure amber' slug damage?
Spring shoots are attractive to slugs; apply slug pellets or a grit barrier as growth emerges in early spring.