I have 2 seed heads of arisaema, 1 sikokianum and 1 consanguineum, that are still green. The sikokianum stem has long since died back and parted from the bulb, apparently before the seeds have fully formed, the consanguineum won't be far behind, but is much plumper. Will these heads produce any viable seed? Can I induce ripening or need I not bother. Advice please. Brian Whyer, Buckinghamshire, England, zone ~8