Eucalyptus regnans

40 (130)m (!), Australian Mountain Ash, native to south-eastern Australia and Tasmania. If not the California Redwood (Sequoia sempervirens), then this is the tallest tree in the world. In cultivation it is fast-growing, makes a straight trunk, very drought-tolerant. Leaves are bright green when young, turning to blue-grey as they mature.
30 seeds per package.