Cleveland,
United Kingdom 
can you tell me how i should thin my calla lilys as they are growen heavey and fewer flowers . thank you daniel doherty
11 Sep, 2012
Previous question
« Soil testing - about time ! I've come to the conclusion that after 4 years...
After the flowers have stopped (autumn) dig up the rhizomes. Start from the edge of the clump gently work inwards so as not to cause damage. Only pick the best and largest that look healthy to replant.
15 Sep, 2012