Why does the cactus have black spots? The cactus has flower buds for more than two months but has not bloomed. Why?

Cactus is a drought-resistant plant. Many people place a cactus at home or next to their computer to help block radiation. Cactus is also easy to grow and does not require excessive care, so it can be said to be the first choice for lazy people. So what is the reason for the black spots on the cactus?

Why does the cactus have black spots?

If there are black spots on the cactus, check whether the soil in the pot is too compacted and poor, or whether it has been watered too much or rained on too much, resulting in excessive moisture in the soil for a long time, causing water accumulation and root rot, which will cause black spots on the cactus.

Another point is that if the pot soil is dry for a long time, although it is drought-resistant, it cannot be left without water for a month or two, which is not conducive to its growth. If the root system is good, check the cactus ball, put on thick gloves, and press the cactus slightly. If it is relatively hard, the inside of the cactus ball is not rotten, and the problem is not big.

Place it in a ventilated and well-lit place, reduce and control watering, and take it slow. It is afraid of an unventilated and stuffy environment. Place it on the windowsill or terrace. First, it needs ventilation, second, there should not be water accumulation in the pot soil, and third, it needs sunlight, then it can grow well.

Why has the cactus not bloomed after having flower buds for more than two months?

It takes a process for cactus to bloom, and it will continue to form buds if the conditions for flowering are not met.

1. Get more sun

Cactus is a light-loving plant, and the amount of light will affect flowering. If there is insufficient light for a long time, it may not only fail to bloom, but also cause the buds to fall off early and there will be no flowers to see. So place the cactus in a place with good light, and it will be easy to bloom. However, please note that if the local temperature is higher than 35 degrees, and the cactus does not get much sunlight at ordinary times, shade it from the light at noon.

2. Provide more ventilation

Poor air circulation will also affect the flowering of cactus. If conditions permit, place the cactus outdoors. If conditions permit, place it near a window for more ventilation, and it will bloom soon. With good air circulation, the metabolism of the cactus is fast, and the flower buds grow fast. If air circulation is poor, the growth of the cactus is like an old ox pulling a cart, which is very slow, and you will have to wait for it to bloom.

3. Appropriate water

Plants bloom to breed the next generation. Generally, the more they feel a sense of crisis, the easier it is to bloom. If there is sufficient water and nutrients, it may bloom slowly. So when the cactus buds are big enough but not blooming, control the water appropriately to give it a sense of crisis, and it will bloom quickly. But be careful not to control the water too much, or the buds will die from drought.

The most taboos for cacti that have buds but do not bloom are: 1. Watering too much, thinking that more watering will make it bloom. 2. Fertilizing too much, thinking that the lack of flowering is due to insufficient nutrients.

Why does the cactus have black spots?

1. Exposure

Cactus is a plant that likes sunlight. Therefore, its leaves are transformed into needles to resist drought. If it is not in the desert, it will not wither even if it is not watered for a month. It still looks vibrant. Although cactus is drought-resistant, it cannot withstand the sun's exposure. Because it is outdoors all day, the sun's exposure will burn its surface, and the burned area is not protected, then it rots and finally forms black spots. If the black spots get bigger and bigger, the cactus will rot.

2. Overwatering

Cactus is a water-saving plant. When watering, just keep the soil moist. Over-watering will damage the root system of the cactus, resulting in insufficient supply of water and nutrients. This will cause the inside of the cactus to rot, and then slowly extend to the surface, resulting in black spots.