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,
Robert Douglas, Count of Skenninge and died without issue. The daughter married an Oxenstierna. The remaining son, Gustaf, was first of the Swedish-born noble line of Douglas. He became a Colonel and Governor of Västerbotten. The Swedish noble family of Douglas descends from him. His grandson, Count Gustav Otto Douglas, was captured by the Russians during the Battle of Poltava, entered Russian service, and in 1717 was made Peter the Great’s Governor General over Finland. In the 1890s the then head of the family, Count Ludvig Douglas, was the Swedish foreign minister and Marshal of the Realm. His father Count Carl Israel Douglas (1824-1898) had