Christmas tree cultivation has shifted toward the production of higher-quality trees, increasing land quality expectations as well. Indeed, some species of tree, such as the Fraser fir, are unable to grow on low-quality, marginal farmland. Flat or gently rolling land is preferred to that with steep slopes and inclines, which is prone to erosion and fluctuations in fertility. Noticeable obstructions, such as rocks, fences or significant underbrush, are also undesirable. Like all crops and plants, Christmas trees require a specific set of nutrients to thrive. There are 16 elements crucial for growth; of those, three are obtained through air and water: hydrogen, carbon,
Steamboats of the Lower Fraser River and Harrison Lake Puget Sound and the Fraser River. Ships that called in were the "Suprize", "Enterprise", and the "Wilson G. Hunt". At the onset of the Fraser Canyon Gold Rush and the accompanying declaration of the Colony of British Columbia, British colonial Governor James Douglas, was worried about an American monopoly on British trade and thus declared a law preventing steamboat traffic operating under the American flag from conducting trade in the colony. This did two things, it enabled a local shipbuilding industry and, in as a result in some cases, ship owners changed flags and registry to British shipping. Two dominant