Calla lilies? How to divide?

They may not survive the winter in pots like they do in your soil. Could you divide them and maybe intersperse them along the back of your garden as they are now. If you decrease the width it will not crowd out your other plants. If I need quick info on plants I am not sure how to care for, I go to gardeningknowhow.com and they are many articles on care, propagation, problems, pest and diseases of each plant. Easy to use site and they use language that most anyone can understand. Sorry I can't tell you how to split them, I have never had them before.

https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/dividing-calla-lilies.htm

I had one in the house and just split the plant at the root and both grew fabulously

http://www.doityourself.com/stry/how-to-divide-canna-lilies-in-6-short-steps

The first one I got was in a pot and spent the winter in my house . I planted in the spring and it multiplied .

YouTube has visuals: https://www.youtube.com/results?search_query=how+to+divide+calla+lilies

Calla lillies are are a bulb. Just Dig Them Up And Separate The Bulbs And Replant. They Do Very Well. I Dug Mine Up Last October And This Spring They Bloomed Like Crazy.

Dig them up when the leaves start to turn yellow and wither, then separate the bulbs. I grow them in pots in OH, but put the pots in the basement after the 1st frost.

I keep mine in pots outside from spring to fall. Then I put them in the basement before frost hits. (I am going to split some up into new pots now in Sept.) When in the basement, do not water them till spring, they usually will start popping out of the soil in late winter. Start watering them then. Take them outside in the spring when it is warm. Keep outside in partial shade. I am in Ohio

I had a black calla Lilly which I split and put into pots and planted one in the garden in a pot (I actually gave one away and planted one on the patio and planted one in its pot in the garden with the intention of bringing it in for the winter) I forgot to bring them in when winter arrived. Alas I thought we start again . . . but come spring imagine my surprise when the pot in the garden had the Lilly growing again! Through trial and error (major!) I have discovered that the one on the patio would survive mild winters, but the one in the pot in the ground survived tougher winters. Oh and as far a splitting them plant aficionados stop reading here . . . I took a kitchen knife (you know the one with serrated edges that "would cut through a can" and just stabbed it into the ground and cut the main plant into smaller manageable sizes

Need to dig them out and can be pulled apart easy. And just plant them in separate pots or in the ground

I live in NY on LI and have my Calla Lilly in the planted in ground. It multiplies and it also spreads to other parts of my garden. I don't do any thing to it. I am going to break it up. this fall and plant and share with others. Good Luck! Easy Breezy!

You can put them in lots as well. They'll do fine.

Hostas do well on this side of NA but because of our damp climate they do fall prey to slugs (have you seen the size of some of them)