rachel77 - yes I've never had much luck with getting another season out of bulbs planted in containers. Usually the flowers are much smaller and fewer in number next year even if I've treated them with the best care. I agree with Patwood to get new ones. For future reference if you plant daffodils in the ground these will spread and continue to flower year after year. You do have to keep the foliage on the plants until it completely browns so the daffodils can build up energy for next years blossums. Then add a little bulb fertilizer. As an added bonus the deer don't usually eat them and squirrels/chipmunks don't dig them up. They are great for naturalizing areas where you can keep the foliage on until it browns.

in your area, I think that sedums would grow even in the shade- lord knows they creep well into the 'shady' side of the house up here in PA. no idea what your mystery plant might be, but I'm sure someone will know- or pester you for pictures ;)

There are lots of good low-growing ground-covers. The one most commonly used in terrariums is Ficus pumila. There is an all-green version and a variegated version. Be warned that it does grow very quickly and needs regular trimming back to keep it in bounds, but the leaves are small and well-suited to the smaller environment of a terrarium. There are also small-leaved ivies, but all english ivies prefer to be grown cooler (terrariums can get rather warm), and they will also take over your terrarium. And though I have no experience with Ficus pumila, I would think that English ivy would be more difficult to get rid of, since it would form woody stems that would be harder to cut, and it's roots can be very extensive. It could also revert to a larger-leaved form, and then you'd really be up the creek without a paddle! There is also Ficus quercifolia, which looks like a very tiny ivy, but is not anywhere near as aggressive as F. pumila. You can buy it from Rob's. I've linked them below. I absolutely love it, and will be ordering some from them next summer. I have seen it in a paludarium in a fish store here, and it really is not aggressive. It actually grows kind of slowly, but it is just the cutest thing, and I love it! You could also use selaginella as a ground cover. Looks more like moss than a vine, but does the job nicely! You can use collected moss, but we are not yet sure if it requires that dormancy. I am currently testing that in my terrarium(s), so we'll have the answer in a couple years. =) I think it would survive for at least a year, so if you want the temporary effect, and would later replace it with some cushion moss or java moss or other good tropical moss, then go ahead. Just don't harvest sphagnum moss from the wild, as it is being over-harvested, and make sure you rinse the moss in RO water and check it for slugs. I imported springtails into my terrarium when I put in some live moss from the forest, but they don't do any damage to plants. Slugs would eat your entire terrarium and would be impossible to get rid of without starting over again, so you want to make sure you don't have any of them! You could just leave the moss soaking in RO water for an hour or two. This would drown any slugs present. And I have found that spring is the best time to collect moss. It grows faster and settles in better, for some reason. And I mean very early spring, when if you go for a walk in the forest, the only green you can see is patches of moss. No grass is growing yet, and no leaves are on the trees and shrubs. A shortage of cork, eh? That seems odd. I thought it was cultivated. Maybe it's been over-harvested since those cork floor tiles became so popular this year! Here is a link that might be useful: Rob's mini plants

You can get wreath wire frames from craft stores such as Michaels, line it with moss and filled with soilless mixes w/ slow release fertilizers. Most of what you've suggested are outdoor type of vines - clematis, honeysuckles, etc.. not ideal for an indoor project. If this is for indoors and you want to avoid ivies, you could do a herb wreath using parsley, thyme, chives, etc. to fill your wreath. or a succulent wreath(good lighting needed), or you could use baby's tears in masses to cover the entire wreath.