I have an arun lily in my garden which has finished flowering are they seeds that are left where flowers were

Question

and if they are can they be replanted once dried off

Answer 1

Yes, the berries do contain seeds. I have never tried to grow them from seed but I would guess you could.  

Answer 2

Many Arums can be seed grown, though hybrid varieties aren't likely to grow true from seed, showing a mix of their parent's characteristics.

Plant them in a moist spot,  and preferably fresh rather than dried out for a long period.  Transplant after their first year, and protect from frost, if you have a freezing location, as younger plants are more frost sensitive.  

You can also divide Arums to reproduce them true to their variety if you'd like this too.

Hope this helps.  Good luck!  Rob

Answer 3

arum lillies are normally cultivated from bulbs not seeds.