On May 7, 7:29*pm, Sacha wrote:

We've planted them in a small, shaded bed with shallow soil against a
hedge; an open bed which is well-drained and raised with good, deep
soil; a south facing bed among shrubs and moist-ish; a very narrow bed
of totally shaded, poor soil up against the house wall facing east bed.
* I've done everything with the damned things other than throw them
over my left shoulder while reciting To Be or Not To Be and garotting a
frog with my right hand. *In other gardens I've more or less repeated
these attempts and I can only conclude that even while my favourite
perfume is Diorissimo (gentlemen may care to Google this) the darned
things will not repay the compliment!

No point in me suggesting the full moon ritual, planting them standing
on one leg with an incantation to the goddess Lily, then?