Sequoia sempervirens, commonly known as coastal or Californian redwood, is a majestic coniferous tree species native to the coastal regions of California and Oregon, United States. Renowned as the tallest trees on Earth, they can reach staggering heights of up to 115 meters with diameters exceeding 7 meters. A more typical height found in NZ is around 40-50m. These towering giants possess a distinct straight trunk with deeply furrowed, reddish-brown bark, and their foliage comprises flat, needle-like leaves arranged in spirals along the branches. Coastal redwoods are evergreen, retaining their vibrant green foliage year-round. In spring, they produce small, inconspicuous flowers that develop into small, round cones containing tiny seeds. Thriving in moist, well-drained soils, they prefer mild coastal climates. These trees are cherished for their ornamental beauty, providing grandeur and shade in parks, estates, and arboretums, as well as their timber value. They also serve as vital components of coastal ecosystems, contributing to soil stabilisation and biodiversity.