Hello Kelly, I have some Zephyranthes drummondii, white rain lilies. If you want to send your bulbs first, then I'll match the size of bulbs you send. Xtal

My only thought is that you might want to try bulbs from a different source - a lot of "bulb" nurseries send things that don't have a chance, even in the hands of very experienced gardeners, especially if we're talking about things that aren't tulips and daffodils. Most rain lilies can be stored dry (I do it with some potted ones every year), but I prefer to buy them already growing, in pots. The best sources for those are Yucca Do nursery in TX and Plant Delights in NC; these places may charge a little more, but the plants will be of better quality, and most (other than Z. grandiflora, which is sterile) are very easy to propagate from seed. You may be on the upper edge of winter hardiness for a lot of varieties - I'd recommend trying Z. candida and atamasco first, since they're the hardiest. Grandiflora (the most common pink) is iffy in 7a, and many of the yellows (pulchella and citrina, particularly) are even less hardy than that. Hope that helps!

If you are in zone 9 then it is unlikely that your winter will be harsh. Your pots can freeze solid overnight and they will have thawed by lunchtime - and your hardy bulbs won't mind at all. All your spring bulbs will be actively growing over the winter months. They need the rain. Leave them outside. You can even leave such plants as Gloriosa, Freesia, and tuberous begonias, outside over a zone 9 winter and be at least 80% sure they'll be back for the following season. So long as your pots aren't 'skimpy small' and there is plenty of room for the huge quantity of roots these bulbs make over the winter then they won't need your TLC. You can use your precious no frost space for the truly tender.

You do have a special situation. On a hot balcony in zone 10. Hmm. For the soil to remain cool in a heat trap a large pot is needed. If you use plastic and the sun hits it the soil temperature is going to be inhospitable to bulbs. For daffodils I would try a 16 inch deep one, preferably unglazed clay (needs more frequent watering than glazed). If all I had was plastic I would find a way to shield the sides from the sun's rays. What confuses me is your saying they are still a little green, just starting to die off. Daffodil foliage ripens by June and they are dormant all summer. Are you very sure you have daffodils? Can you take a picture of the foliage? I think the only green foliage bulbs I have right now are nerine, dahlias, rain lilies and lilies.