Dieffenbachia 'Summer Style'Is it winter gloom or just a summer shower? The Dieffenbachia 'Summer Style' is a conversation starter in the living room! The leaves of this plant are almost white and edged with green. That's how to bring summer indoors. The Dieffenbachia is easy to care for. Water the plant once a week. You can do this more often in the summer. The plant does like light, but not strong, midday sunshine. Morning and evening sunshine, however, are fine for this