I'm going to throw this in - maybe you're treating them too well?
I have several arum started from seed over the years, tags lost long ago,
they're in my unheated plant room. Heat comes in through the open door and
it's pretty chilly in there. I don't fertilize until they start to bloom
and so far they only bloom when I put them outside beginning of June
depending on the weather. There are two windows in that room so they don't
get any direct sun. We do live in completely different climates though
Arnold. I forget to water them and treat them like any other plant in my
house, survive or not.
Linda
Zone 2 ish
Alberta, Canada
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