I need to divide 2 boston ferns. 1 fern is in a 10" pot very rootbound and the outher is in a very large probably 20" pot slightly rootbound. I have split a aparugus fern before just by cutting the rootball in half. I have no ideal if this is the proper way to split a Boston Fern.
I would like to split the very large fern into 2.
I think the smaller fern I will just go up to a larger pot if it doesnt need to be split.
What is the best soil for a fern?
The ferns didnt cost me a thing. The church I attend threw them out. So I braught them home. They are the biggest ferns I have ever seen (huge) the largest fern is about 3 foot wide and 3 foot tall. It is the one that makes me nervouse on how to properly care for it.
I would appreciate any advise or words of wisdom.

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