The Stunning Evergreen Tree That Can Easily Tolerate Poor Soil
Planting a tree in less-than-ideal soil is no easy task. After all, soil is what provides a tree with the essential elements to grow and flourish. And this puts homeowners with deprived garden soils in a bit of a pickle, as selecting the right tree for your landscape becomes tricky once you also factor in the poor quality of the land. Luckily, though, there are some trees that can grow and even thrive in poor soils. The best part? Some of them look really good, too. Take, for instance, the Korean pine (Pinus koraiensis). It is an elegant evergreen with soft, silvery-blue needles and a tall, straight trunk. However, its real appeal comes from its ability to grow in a range of soil conditions. In clay, sandy, and even nutritionally poor soils, the tree can handle it all. Plus, it is tolerant of urban conditions.
So, if you live in a city and have degraded soil, the tree might be an ideal choice. You can plant it either solo as a standout specimen tree or arrange it in groups to build a lush privacy screen around your home. Just keep in mind that Korean pine is not a small tree. It can easily reach heights of 30 to 50 feet and sometimes even up to 100 feet. Plus, its branches spread horizontally. So, if you are short on space, you might want to look for some other small trees that won't overtake your yard. However, if you do have the space, the Korean pine is easy to grow and has an exceptionally long lifespan. Plus, it produces edible seeds that attract wildlife, keeping your landscape full of life.
Growing and taking care of a Korean pine tree
As appealing as the Korean pine is, you should consider a few things before you go wandering through nurseries searching for it. For instance, the first thing you need to consider is your USDA Plant Hardiness Zone. The Korean pine is only recommended for zones 3 through 7. It prefers cooler summer temperatures and does not perform well in hot weather. But the good thing is that it has excellent cold hardiness and can easily thrive in frigid climates. As for placement, the Korean pine is a full-sun plant and needs to be placed in a spot that receives plenty of sunlight.
Beyond that, it prefers slightly acidic or neutral soil, with pH ranging from 5.5 to 7. There is no need to panic, though, if your soil pH is slightly off. It is far easier to fix than nutrient deficiencies, and you can easily check it with home-based soil testing kits. Then, if it is too alkaline, just add a bit of sulfur, and if it is too acidic, treat it with lime. And while preparing the soil for Korean pine, make sure to also check and fix any drainage issues. The tree does not tolerate wet and poorly drained soils.
Lastly, when it comes to watering and fertilizing, the Korean pine has modest needs. It is relatively drought-tolerant once established. However, you will need to water it regularly during the first two to three years of establishment. As for fertilization, a slow-release fertilizer can be beneficial if the growth is slow. But don't feed it too much, as it can reduce seed formation on the tree.