- Name: Red Forest Gum Tree - Other Common Names: Blue Gum / Bastard Box / Flooded Gum / Grey Gum / Mountain Gum / Queensland Blue Gum / Red Gum / Red Ironbark / Red Ironbark Gum / Slaty Gum - Scientific Name: Eucalyptus Tereticornis - Color: White Flowers - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: Mid Spring - Hardiness Zone: 8 - 11 - Plant Height: 10 - 40’ - Plant Spacing: 20 - 30” - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Quantity: 25 Seeds - Other: This Eucalyptus Is An Evergreen Tree That Is Native To Eastern Australia. It Has A Straight Trunk And All Of The Branches Are Near The Top Of The Tree. The Bark Sheds At Different Times Giving The Trunk Shades From White To Grey To Brown. They Also Attract Bees, Birds, And Butterflies.