Red Sapphire - DoubleWow! What else can we say about this new color in Hellebores. "Red Sapphire" from the "Winter JewelsTM" series is an amazing new introduction. Double deep red flowers appear like rubies above the foliage winter through May. Like all Hellebores, they are prized for their shade tolerance and deer resistance (all parts are toxic if eaten). They grow best in US Zones 5-8, but will grow in Zone 9 if amended properly.