Troubleshooting
Double-Flowered Bloodroot problems — and how to fix them
Double-Flowered Bloodroot (Sanguinaria canadensis 'Multiplex') is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Rhizome rot in wet soils
The fleshy rhizomes are highly susceptible to fungal rot if drainage is poor; plant on a slight slope or in raised beds and incorporate grit to improve drainage, especially in heavy clay soils.
Failure to spread — sterile cultivar
'Multiplex' is sterile and will not set seed; it can only be increased by careful division of the rhizome after dormancy (late summer or early autumn). Overcrowded clumps can be divided every 4–5 years to maintain vigour.
Prevent double-flowered bloodroot problems before they start
Most double-flowered bloodroot issues are care-mismatch, not bad luck. Dial in the basics:
Double-Flowered Bloodroot problems — FAQ
Why is my double-flowered bloodroot rhizome rot in wet soils?
The fleshy rhizomes are highly susceptible to fungal rot if drainage is poor; plant on a slight slope or in raised beds and incorporate grit to improve drainage, especially in heavy clay soils.
Why is my double-flowered bloodroot failure to spread — sterile cultivar?
'Multiplex' is sterile and will not set seed; it can only be increased by careful division of the rhizome after dormancy (late summer or early autumn). Overcrowded clumps can be divided every 4–5 years to maintain vigour.