Troubleshooting
Heuchera 'Marmalade' problems — and how to fix them
Heuchera 'Marmalade' (Heuchera 'Marmalade') 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
Planting too deeply or waterlogged soil encourages fungal rot at the crown; always plant so the crown is at or just above soil level.
Vine weevil
Grubs notch leaf edges and consume roots; apply biological nematode controls in late summer or early autumn.
Rust
Orange pustules on leaf undersides in humid conditions; remove affected leaves and improve airflow around plants.
Leaf scorch
Brown crispy patches from excessive direct sun; relocate to a spot with afternoon shade.
Winter heaving
Repeated freeze-thaw cycles can lift the crown from the soil; press back gently and mulch lightly to insulate.
Prevent heuchera 'marmalade' problems before they start
Most heuchera 'marmalade' issues are care-mismatch, not bad luck. Dial in the basics:
Heuchera 'Marmalade' problems — FAQ
Why is my heuchera 'marmalade' crown rot?
Planting too deeply or waterlogged soil encourages fungal rot at the crown; always plant so the crown is at or just above soil level.
Why is my heuchera 'marmalade' vine weevil?
Grubs notch leaf edges and consume roots; apply biological nematode controls in late summer or early autumn.
Why is my heuchera 'marmalade' rust?
Orange pustules on leaf undersides in humid conditions; remove affected leaves and improve airflow around plants.
Why is my heuchera 'marmalade' leaf scorch?
Brown crispy patches from excessive direct sun; relocate to a spot with afternoon shade.
Why is my heuchera 'marmalade' winter heaving?
Repeated freeze-thaw cycles can lift the crown from the soil; press back gently and mulch lightly to insulate.