Agave ovatifolia ‘Iced Heart’ is a very special form of the ‘Whale Tongue Agave’ sharing all the characteristics of what already is a magnificent agave but adding a tough of drama by being slightly paler and bluer in the central growing point. A fairly recent introdution from breeders in the U.S.A and somewhat dramatically named Agave ovatifolia ‘Iced Heart’ should show the same hardiness and tolerance to our generally mild damp winters here, so yes this is definitely another candidate for year round cultivation in milder U.K gardens. Agave ovatifolia ‘Iced Heart’ ultimately forms a very architectural broad leaved specimen up to around 120-140cm high and wide, absolutely stunning in my opinion.
As with all gave worth growing outside in the U.K unless you have a very mild or dry micro-climate I always recommend building a roof over the top of treasured agave plants in winter. Simply hammer in 4 stakes around the agave a fix a clear plastic ‘roof’ onto the top of each stake above the agave leaving the sides clear allowing wind to pass through the leaves. Alternately we recommend growing in a pot in full sun from April to the end of October depending on the weather and moving it to a greenhouse, conservatory or even shed for the winter where it can have protection from freezing and wet. No watering will be needed from November to March.