Known As Calla Lilies These Decorative Plants Are Spectacular In Patio Pots Or Used As Summer Bedding. With Their Bright Colours And Interesting Flower Shape These Tuberous Plants Look Fabulous In Pots On The Patioplant The Tubers 10cm4in Deep Into Fertile Reliably Moist Soil Or Moisture Retentive Potting Compost.after Care The Fleshy Tubers Will Need Frost Protection To Keep Them Through Winter. Cover With A Dry Mulch And Bring Pots Under Cover Through Winter.