Growing a bonsai tree from a single seed is an extremely long and slow process. Depending on the type of tree you grow, it can take up to 4-5 years for the tree's trunk to become just 1 inch (2.5 cm) in diameter. Some seeds also require precisely controlled conditions for germination. However, this method is also perhaps the ultimate bonsai tree experience insofar as it allows you to have total control over the plant's growth from the moment it breaks through the soil. To start, buy seeds of your desired species of tree from a gardening store or gather them in nature.  Many deciduous trees, like oaks, beeches, and maples, have instantly-recognizable seed pods (acorns, etc.) that release from the  tree on a yearly basis. Because of the ease of obtaining their seeds, these types of trees make great choices if you're aiming to grow a bonsai tree from the seed. Try to get fresh seeds. The time window in which tree seeds can germinate is often smaller than that of flower or vegetable seeds. For instance, oak seeds (acorns) are "freshest" when they're harvested in early autumn and they retain some of their green color. Once you have gathered suitable seeds for your bonsai tree, you must care for them to ensure they germinate (sprout). In non-tropical areas with defined seasons, seeds usually fall from trees in autumn, then lie dormant through the winter before sprouting in spring. Seeds from trees that are native to these areas are usually biologically coded to germinate only after they experience the cold temperatures of winter and the gradually increasing warmth of spring. In these cases, it's necessary to either expose your seed to these conditions or to simulate them in your refrigerator. If you live in a temperate environment with defined seasons, you can simply bury your tree's seed in a small pot full of soil and keep it outside throughout the winter and into the spring. If you don't, you can keep your seeds in a refrigerator for the winter. Put your seeds in a plastic zip-lock bag with a loose, dampened growth medium (for example, vermiculite) and take them out in the spring when you see sprouts emerging. To simulate the natural cycle of gradually decreasing, then increasing temperature that takes place from the late autumn to early spring, place your bag of seeds at the bottom of the refrigerator initially. Over the next two weeks, gradually move it up, shelf by shelf, until it's at the top, right next to the cooling unit. Then, at the end of winter, reverse the process, moving the bag down shelf-by-shelf. When your seedlings have begun to sprout, you're ready to begin nurturing them in a small soil-filled container of your choosing. If you allowed your seeds to naturally germinate outdoors, they can generally remain in the pot that you germinated them in. If not, transfer your healthy seeds from the refrigerator to a pre-filled pot or seed tray. Dig a small hole for your seed and bury it so that its main sprout points up and its taproot points down. Immediately water your seed. Over time, try to keep the soil around the seed damp, but not sopping wet or mud-like, as this can cause the plant to rot. Don't use fertilizer until about 5 or 6 weeks after the plants have established themselves in their new containers. Start small, using only very minor amounts of fertilizer, or you may "burn" the plant's young roots, damaging them with overexposure to the chemicals in the fertilizer. As your seeds continue to grow, it's important not to expose them directly to cold temperatures or you'll risk losing your young plants. If you live in an area with a warm spring, you may cautiously introduce your new seedlings to a warm but sheltered spot outdoors, ensuring your trees aren't exposed to harsh wind or constant sunlight, provided your species of tree is one that can naturally survive in your geographical area. If you're growing tropical plants or germinating your seeds out of season, however, you may find that it's better to keep your plants indoors or in a greenhouse where it's warmer. Regardless of where you keep your young seedlings, it's important to ensure they receive frequent, but not excessive watering. Keep the soil damp, but not soggy. Carry on with your regimen of watering and cautious sun exposure as your seedling grows. Deciduous trees will sprout two small leaves called cotyledons directly from the seed before developing true leaves and continuing to grow. As your tree grows (again, usually this process takes years) you may gradually introduce it to larger and larger containers to accommodate its growth until it reaches the size that you'd like for your bonsai tree. Once your tree is fairly established, you can leave it outdoors in a spot where it receives morning sun and afternoon shade, provided that your species of tree is one that can naturally survive in your geographical location. Tropical plants and other fragile bonsai varieties may need to be kept indoors perpetually if your local climate isn't suitable.
الحصول على البذور. السماح للبذور بالإنبات. وضع البذور في علبة  بذور أو وعاء. احفظ الشتلات الخاصة بك في درجات حرارة مناسبة. الاهتمام بالشتلات الصغيرة.