Welcome:)The Hibiscus that are in the nurseries now in bloom are hothouse hibiscus. They will do fine in full sun on your deck. You will need to bring them in after the summer season and keep them in all winter. I did this for 4 years with one I had. There are Hardy Hibiscus that grow outdoors in the garden in zone 7. I have several and they bloom all summer and survive the winters here in Delaware. They come back each year and bloom all summer for me. Regards, Pat

You are seeing Hibiscus rosa-sinensis, or tropical hibiscus. They love full sun. You will need to water fairly often in pots once it gets hot. The tree types (they are called standards) have a tendency to lean or fall over in windy locations. You will need to protect them from freezing and fertilize regularly to keep the blooms coming, but do NOT use a bloom booster fertilizer, that's the kind that has a high middle number. Use one with a low middle number or numbers that are about the same.

I have found that the red ones with single (five-petaled) flowers are the easiest to grow and bloom well.

Hardy hibiscus are a lot less work since they go dormant in the winter. I personally don't like the flowers quite as well, and the stems tend to be tall and lanky. You certainly wouldn't be able to get one pruned into a tree shape.

They are a bit of a challenge to winter over indoors but it can be done. Check out the web site below for help.

Here is a link that might be useful: tropical hibiscus