Lwftwood, thank you for your advice. You're right, when I look in the pots with adult orientals now, despite adding the geranium mix, the soil is still too clay-like and not aerated. So I will dramatically reduce the amount of clay for next season, add more of geranium substrate and also coarser sand.
I have a lot of rodents in my garden, so I was thinking of burying the pots with adult bulbs in the ground for the winter. I would drill a large number of holes in the bottom of each pot to allow water to drain quickly, however I am concerned that the surrounding clay soil will drive water into the pot from below, is this possible?
