Hey Bobwu. I live in South Central PA. Numerous times I've visited Parkside Orchids. It's about 2 hours from my location. But depending where your located to King of Prussia it's most likely around an hour for you. They have all sorts of different orchids to choose from and a very helpful staff to answer any questions. Hope this helps.

dlsorchids, Thank you so much! Google map shows it is only 50 minute's drive from my location. I'll definitely visit them soon.

You could also check out this greenhouse, but you would have to deal with rt. 422 :(

Here is a link that might be useful: mutschler's