Are they in pots now? If so you could probably just stick them in the dirt under a tree. No need to bother with adding anything as long as your soil drains well.

If they are not in pots then you'll have to figure out what they are. Some broms just can't be planted.

Pictures would help greatly ..there are many broms tehy could be...

I traded here and received some unidentified broms and also Queen of Tears bromelaid. Few I purchased from E-bay (shipped from Hawaii): A- 'Donna'; C- 'Jeffrey Block'; E- 'Hyperspace'; J- 'Tigrina'; K- 'Anita' . I will post more pictures shortly including the ones that need to be Identified:
http://photos.gardenweb.com/garden/galleries/2008/10/broms.html
http://photos.gardenweb.com/garden/galleries/2008/10/brom_planting_mix.html

Most of the broms you have are Nepregelia. Thye can be planted in the yard in well drained areas and if you don't get freezing temps. The tillandsia probally needs to stay in the pot

Thank you, hotdiggetydam and bromadams. That helps. If I won't kill my broms, I'd love to increase their number and variety :) Are they condidered to be hard to care for?

Broms given the few requirements they have ..are easy care. water, food, light and good air circulation

You can make your own mix with 1/3 perlete, 1/3 mini pine nuggets and 1/3 peat. The object is to let the water drain thru so you don't overwater.