Why isn't my Anthurium andreanum flowering? Four causes and tips to encourage blooming
Much of the reason Anthurium andreanum is so loved has to do with its pink flowers, and it is precisely from its pink flower color that it gets its name. But some growers run into the problem of raising it for a long time without it ever blooming, which is very frustrating. So what is going on when Anthurium andreanum won't flower? There are mainly the following causes.
What is going on when Anthurium andreanum won't flower

1. Unsuitable temperature: Anthurium andreanum is native to Colombia in South America, where the climate is hot and humid. If you keep it in an environment where the temperature stays below 20°C for a long time, or even lower, it will fail to flower, or will flower late, because of the unsuitable temperature.
What to do: Avoid too low a temperature in the environment where Anthurium andreanum sits, and create a temperature more suitable for its growth and flowering. For example, 20-28°C is the most suitable for its growth, but do not let the temperature regularly exceed 35°C, otherwise the leaves of Anthurium andreanum will turn yellow.
2. Sufficient light: One characteristic of tropical rainforests is that very little sunlight reaches the ground, and Anthurium andreanum likes an environment with light but not too strong light. A lack of light will make Anthurium andreanum grow slowly, while too strong light will scorch the leaves.
What to do: It is best to place Anthurium andreanum in a spot with shade overhead, such as beside an indoor window, a windowsill out of direct sun, and so on, so that it is not fully exposed to the sun but can still receive some scattered light. This helps Anthurium andreanum flower.
3. Suitable soil: Soil that is too acidic leads to a deficiency of magnesium, while soil that is too alkaline is bad for the root development of Anthurium andreanum. Once root growth is hindered, flowering becomes difficult, and not only that, its entire growth will run into problems.
What to do: When choosing soil, do not use soil that is too extreme. Using soil rich in humus is the wisest choice, such as garden soil, leaf mold, river sand, and so on. If conditions are limited, you can buy fertile potting soil from a specialist market.
4. Scientific fertilizing: Sometimes growers find that Anthurium andreanum grows fine and the leaves are sprouting normally, but it still won't flower for a long time. At this point, what is going on when Anthurium andreanum won't flower? The answer is that fertilizing is lacking, and scientific and reasonable fertilizing is needed.
What to do: During cultivation, follow the principle of light fertilizer applied frequently. Before the flowering period, apply some nitrogen fertilizer as a top dressing, and before autumn you can also apply some phosphorus and potassium fertilizer as a top dressing. These can all encourage Anthurium andreanum to flower. For specific fertilizing methods, you can refer to how to fertilize Anthurium andreanum.
What to do when Anthurium andreanum only grows leaves and won't flower: an analysis of the causes of Anthurium andreanum not flowering
Sometimes an unsuitable growing environment causes Anthurium andreanum to only grow leaves and not flower. So what do you do when Anthurium andreanum only grows leaves and won't flower? When cultivating Anthurium andreanum, it needs a hot and humid environment to flower well.
1. Causes of Anthurium andreanum not flowering
For Anthurium andreanum to flower, it needs suitable conditions of light, temperature and humidity, and generally hot and humid conditions are best, along with suitable light.
Generally, when Anthurium andreanum fails to flower, it is caused by factors such as light that is too strong or humidity that is too low.
2. What to do when Anthurium andreanum won't flower
1. Suitable light.
Light is an important condition affecting whether Anthurium andreanum flowers. Generally, when the light is too strong, Anthurium andreanum flowers poorly, because overly strong light, especially in summer when accompanied by high temperatures, will cause the leaves of Anthurium andreanum to become sunburned and will also cause it to fail to flower.
So when cultivating Anthurium andreanum, it is best to place it in a spot with scattered light for care, and not expose it to direct sunlight.
2. Relatively high humidity.
Anthurium andreanum likes high humidity, but in dry regions such as the north, this level simply cannot be reached. When humidity is insufficient, it has an adverse effect on flowering.
Although Anthurium andreanum likes relatively high humidity, this does not mean it wants a lot of watering; too much watering will actually have the opposite effect. So when cultivating Anthurium andreanum, it is best to mainly mist it, and especially when the leaves show dry cracking, you can mist a bit more. Note that when misting, you can spray more water around the plant, but try not to spray it on the leaves.
In addition, if Anthurium andreanum is to flower well, two more points need attention. One is ensuring a suitable temperature: the suitable growing temperature for Anthurium andreanum is between 20°C——30°C, and ensuring the temperature is suitable helps flowering; the second is reasonable fertilizing, mainly light fertilizer applied frequently, and you can also use some flower fertilizer to encourage flowering.
Causes of Anthurium andreanum not flowering
Many growers find that the Anthurium andreanum they bought flowered only once and then never flowered again, and they cannot figure out the causes of Anthurium andreanum not flowering. In fact, if you want Anthurium andreanum to flower, you first need to understand its habits and care methods, and only then can it flower.Anthurium andreanum is a plant of the Araceae family and likes a hot and humid environment. This is something that cannot be met in many places in China, especially in the north, so many growers' Anthurium andreanum either does not flower, or the flowers are very few and small, a world away from when it was first bought. The reason it had many brightly colored flowers when first bought is that production takes place in greenhouses, where temperature, humidity, fertilizer, and light are all very suitable, so it flowers abundantly. Moreover, sometimes flower producers use flowering agents, but this may cause the plant to flower only once.
Now that you have already bought it, how can you raise Anthurium andreanum as well as possible?
First, keep it in a spot with scattered light, without direct sunlight, especially in summer, otherwise sunburn easily occurs; water moderately, better too little than too much. Although Anthurium andreanum likes a humid environment, that does not mean it likes a lot of water. Normally you can mist to increase humidity, but try not to spray the leaves directly; you can mist around it instead; fertilize with light fertilizer applied frequently, and you can use common flowering plant fertilizer, which helps encourage flowering. Also, the ideal growing temperature for Anthurium andreanum is between 20°C-30°C.
In addition, growers especially in the north often see dry cracking on the leaves of Anthurium andreanum. This is all because the air humidity is not high enough, which is a hardware issue, and growers do not need to deliberately change it, because having air humidity stay around 70% for a long time is unrealistic in the north.