It doesn't look all that shady from the photo :-) You could try hydrangea or clethra in the container. Both are happy in at least partial shade and come in white or pale colored forms.

Hi gardengal,
Yes, that corner gets shady because of the cedars. I already have a hydrangea in the backyard so I really don't want another one. I looked up clethra and it's very pretty. I like the white flowers. I have always wanted a camelia. Would a camilia grow in that pot in the corner? Just a thought. Thanks gardengal, and I love all your ideas.

I think I posted this twice. duh!
gardengal~ You said camelia would only work for awhile.

Any other ideas? please?

Unless you keep it well trimmed back, the cedar hedge will soon fill that narrow space. Why not plant something in your pot to climb on your trellis/partition? or have an obelisk in your planter for something to climb up? You could start with an annual vine to see if you liked the idea before switching to a perennial. If you decide on a perennial, I try to get a larger pot that you could just leave out for the winter (not clay as it will crack).

Cadence, the camellia would for work only for awhile simply because it will soon outgrow the container :-) The other two shrubs suggested are smaller and more suited to container culture long term.

Daphne would be another thought. Daphnes are very amenable to containers - they like that sharp drainage containers offer and they are smaller sized shrubs. One of the summer blooming ones like D. x transatlantica 'Summer Ice' would give you pale flowers over a long season and amazing fragrance to boot!

ontnative ~ Thank you for your suggestions. Yes, I'm planning to let that part of the cedar grow out to the fence to close it off. I still want to place something in the corner. I will be growing New Dawn climbing rose on the trellis. I really like your idea of the obelisk. I've never had one before. Also, thank you for reminding me about the clay pot cracking. I guess I'll have to purchase another pot.

Gardengal~ Thanks for explaining about the camelia. I love the Daphne! Oh so pretty. Would it be okay in my shady corner? I really like the delicate, fragrant light colored flowers. It would pretty against the cedars. I will look for it at the nursery.

Thanks again for taking the time to help me. I can hardly wait to get planting.