I planted a couple of deep blue ones last year - no sign of flower spikes yet, but I remain optimistic
Watch out when cutting them back, they're very poisenous as I found out a few years ago when I nicked my finger when clearing them up.They grow like weeds here and are in full flower.
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I planted a couple of deep blue ones last year - no sign of flower spikes yet, but I remain optimistic

Watch out when cutting them back, they're very poisenous as I found out a few years ago when I nicked my finger when clearing them up.They grow like weeds here and are in full flower.