dig up in late spring and keep the top corms from each 'string'. then plant about 2" deep and 6" apart . perhaps a good handful of slow release fertilizer mixed in would help too.

welcome to goy too. :o)

Not disagreeing, but we were always advised not to split up the long string of corms. Wonder if that has changed now.

I will have to do an investigation on that Owd and see if it makes any difference. I suspect it makes no difference as they are sold 'dry' as a single corm aren't they? I have never got corms that have been broken off the 'string' to grow. have you?

The habit of growth is to make a new corm on top of the string each year. The lower ones are exhausted so that is probably why they do not grow.

yes that is what I surmise too. I guess the older ones finally rot away and add nutrients back to the soil.

Re the lack of flowers: I would suspect lack of sun first, and lack of nutrients, especially potash or phosphate, second.