PlantFiles: Golden Calla Lily
Zantedeschia elliottiana

I have some calla lilies in my rose bed that have overwintered in the soil with no protection other than the mulch that I use around the roses. I believe they are a variant of Z. elliottiana. Last winter the thermometer on my porch within 10 feet of the plants hit minus 11.4 degrees F. My backyard thermometer which is exposed to the sky recorded minus 17.6 degrees F. I planted these calla lilies in 2006, so they have now survived three winters. The bed they are in is on the south side of the house and raised.

I bought this plant from our regional tech school plant department.
I potted it and it has bloomed very nicely. I even took it with me to our place in northern Michigan and it did very well there too.
How do I separate it for additional plants?
nanabest1

This is the only Zant. variety that bloomed (or grew at all) in the deep shade of my tree. It is still much better in sun. A very clear yellow with good shape. A strong grower; feed regularly.

I have had this very beautiful plant in my garden for 3 years now. It bloomed great the first year and the second it only had folage. This year I got 2 huge flowers on it. The folage is great by its self but the deep yellow flower just makes it better.

I'm growing this in zone 7a and it's spreading yearly. The color is clear yellow, no red or orange in it.

I recently found the Calla Lily's pH requirement (6-6.5); and other information; namely, the roots are dangerous if eaten, as they contain oxalic acid. Symptoms include swelling and burning of the tongue and mouth, nausea, vomiting and diarrhea.