2, orchids without roots, the roots completely lost the function of absorbing fertilizer. Orchids absorb nutrients mainly by roots, followed by leaves. This rootless orchid, from the cultivation point of view, is because the plant is tall. So when planting, it is best to plant deeper and fix the plants. But in daily management, especially fertilization management, the best and only way is to strengthen liquid topdressing.
3, orchids avoid big fat, do not use fertilization to promote rooting. It is suggested to water orchids with dilute salicylic acid solution, or to grind aspirin tablets and dissolve them in alcohol, and then dilute them with a lot of water. Salicylic acid has a good effect on promoting roots of plants.