There used to be people that would lease and maintain plants for companies to put in there lobbies. They would buy large plants from individuals for a nice price but I don't know if they exist today. We have a Bird's nest fern, Snake plant and two huge ferns about 4' across that must go. Bird's nest firn by tsebmj, on Flickr
Great beauties,..pity i don't live close to you,..is there anyone in the Stew near PA,..if so i am sure they would be snapped up quickly.
What nice plants. I would be sad to have plants that were that nice and I had to give them up. You have a fine green thumb there. I hope you find good homes for them...You could try a flower shop or retail greenhouse to see if they would be interested in purchasing them from you. Nice plants of good size are hard to come by for the flower shops. I kind of cringe to suggest Craigslist, but I would think you would be fairly safe to put them on there. It isn't as if they have any real resale value to anyone. Now anything of value? no way, no how!
If you don't have your heart set on selling the plants, try offering them to a rehab center, nursing home, or senior citizen center. They often like to have something green to cheer up their entryway, waiting room, or group areas.
Over here hospices are more than happy to take plants from folks. It cheers up both the patients, their families and the staff. There are also older people in our community that can no longer garden but still love to have plants around them. Yours look to be the types that they would be happy to take care of. Do let us know if you find good homes for them as I'd hate to think of them being thrown out.
The people you are talking about who "used to" lease plants to businesses are called interior landscapers, and it is very much a thriving industry. Look under 'plants' in the directory of the nearest city. The ideas of looking for a hospice or assisted living facility are good also. You might try connecting with a garden club nearby, or a botanical garden, if there are any close.
What lovely plants. Someone is going to be really lucky to get such large specimens. I too have down-sized my plants. It was hard, but I love having more space to move around in and to be able to see out the windows. The rooms feel larger with less and smaller plants.