I come by some of these bulbs and planted them this weekend, I think they should have gone in last autumn but too late for that. apparently they give a long flowering period but are hard to grow. I decided to put 5 in a six inch plastic pot (3 pots in total)with the tops just below the soil. they are in the shade at the moment to start them off and I plan on sinking the pots into the garden in the sun when they get started (if they do) I think they are not hardy so my thinking was its easy to lift them all out safely if they are in the pots. would this work?