We've got this huge arrangement for decoration yesterday. I cannot identify the huge plant in the center. Please give me the name of the plant and any tips on how to keep the arrangement alive for a long time.
The large plant in the middle is Yucca elephantipes. It's a very strong plant often used as houseplant. It can very well handle drought and likes a lot of sun as well, but in the half shade it will be happy as well. It doesn't like wet feet (too much water) or frost. See here for more info about the plant.