1. What about the unearthed orchid root length

Basin change:

Reason: if you don't change the pot for the plant all year round, but the plant is growing all the time, it will lead to that the flower pot can't hold so many roots and can't let the roots of the plant stretch freely, so its roots will grow and be unearthed. If the pots are not changed in time, its roots will be intertwined and squeezed each other, which will lead to the lack of fresh air and nutrient supply for some roots, and finally the problem of empty roots and rotten roots

Measures: the basin needs to be removed and replaced as soon as possible. Watering can be reduced before removing the pot, so that the pot soil is relatively dry, which is convenient for removing the pot and prevents damage to the root of the plant. Then select a larger flowerpot. The new flowerpot needs to be disinfected and washed in advance, and the plants will be planted after filling

Planting material replacement:

Reason: if the roots of orchids break through the soil upward, it may be because the planting materials of breeding plants are airtight. If the root system of the plant has difficulty breathing at the bottom, it will grow up independently and breathe fresh air

Measures: it is necessary to prepare plants with stronger air permeability as soon as possible, and the proportion of granular soil can be appropriately increased. After preparation, the plant material shall be soaked in disinfectant and disinfected

2. What if there's only one root left

If the orchid has only roots, it may be difficult to survive. You can plant it first to ensure the air permeability of the matrix, and then water it. Don't pour too much, keep the matrix slightly wet, and maintain it for a while to see if it can be saved