What happened when the magnolia didn't grow new leaves?

If the normally growing gentleman orchid does not grow new leaves for a period of time, it can be concluded that there must be something wrong with the orchid. So, what's the reason why Magnolia doesn't grow new leaves?

First, serious rotting roots lead to the lack of new leaves, and rotten roots lead to insufficient supply of nutrients in orchids, which is one of the reasons why new leaves do not grow.

Second, the alkalinity of the new soil inhibits the growth of roots and the absorption of nutrients, but also does not grow new leaves.

Third, pests eat the growing point of orchid core or rotten core resulting in no growth of new leaves.

The way to deal with it is:

The rotten roots of orchids should be replaced with new soil and mixed with a certain proportion of river sand, or soaked with rooting powder to make the roots become strong as soon as possible, and new leaves can grow out. If the alkaline soil is alkaline, replace the neutral new soil in time, or pour some ferrous sulfate solution in the original soil or sprinkle it in the basin with diluted edible vinegar solution to neutralize the alkaline ingredients in the soil, so that the new leaves will grow after treatment. Pests eat the growing point of the orchid core, the rotten core of the orchid, the possibility of growing new leaves is not great, so we have to wait for it to grow new buds in the stem.