Why are the edges of the leaves of the plant turning red and black?

The reason why the leaf margins of radish turn red

The seedlings are still small, and the color of the leaf edges is relatively bright, just like the rosy skin of a baby.

As it grows and is exposed to the sun, the edges of its leaves will turn into their normal color.

The reason why the leaf edges of the plant turn black

The blackening of the leaf edges of the radish plant may be a sign that it is about to grow pups, and the growth of the pups causes changes in the pigmentation of the edges. One possibility is that the potting soil contains coal slag, and the fine powder of the coal slag is absorbed by the leaves, accumulating at the leaf edges and producing black spots.

Don't worry whether the leaf edges of the bromeliad turn red or black, because it is not a big problem. As long as the roots are not rotten, they will return to normal color. Flower lovers whose potting soil contains coal slag can consider changing the potting soil...