Reasons for Blackened Hyacinth Leaves and Solutions

I. Causes

1. Frostbite

Its bulbs are very cold-resistant and can generally tolerate very low temperatures, but the leaves cannot. Once left too long in an environment with temperatures that are too low, its leaves will suffer frostbite and then turn black.

2. Too Dry

When the environment where it is grown is too dry, with no moisture in the air, or when there are high-temperature objects around it, its leaves may turn black.

3. Temperature Too High

When the temperature is too high, it may be unable to withstand the heat, its physiological metabolism becomes abnormal, and its leaves turn black.

4. Root Rot

This situation mostly occurs in hydroponically grown plants. Because its roots rot, it cannot absorb enough nutrients; the leaves lack a nutrient supply, so they turn black.

II. Measures

Based on the above causes, we give solutions one by one:

1. If its leaves have suffered frostbite, we need to observe it, find all its frostbitten and blackened leaves, and cut them off with scissors. Then place it in a slightly warm place for a few days to ease the transition. After it adapts, raise the temperature by a few degrees. In this way, slowly increase the temperature gradient, gradually raising the temperature to about 15°C, which is suitable for its growth.

2. If there is a high-temperature source near it, move it or the high-temperature source away. If the environment is too dry, use a spray bottle to spray some water mist into the air around it to increase humidity.

3. In this case, lower the room temperature to about 15°C, or simply move it to a cool room for growing.

4. This situation is more troublesome. First, take it out, cut off the rotten roots, and disinfect with a disinfectant to prevent infection. Then repot it in soil. Note that it must not be grown hydroponically, otherwise its roots will still rot.