Consider the age of the plant. Most cacti begin to bloom no earlier than 3 -5 years. This time period varies greatly not only between representatives of different genera, but among specific members of each clan. Some specimens bloom only on reaching 10 years, and columnar and globular desert cacti at all in the second ten.
Provide favorable conditions. Think of how well you take care of the cactus. Be sure to regularly repot the plant. Fresh land and needed watering are indispensable for the health of the cactus and flowering. On the other hand, excessive care and the "overfeeding" with organic fertilizers or a mixture of mineral salts only slow down the development. In the period of readiness for flowering cactus should be fertilized only by a solution of potassium phosphate. If he has gained the buds, leave nature to do its work independently.
Provide the cactus with the inflow of fresh air. Put it in the summer with the window open. If possible, leave the plant outdoors during the day and night. The evening temperature difference has a beneficial effect. The more fresh air the cactus gets, the less he will be susceptible to disease and the sooner they will bloom.
Move the pot with the cactus as little as possible. Plants don't like change, so try to water the cactus, not shifting it. With the change of the position of the pot changes and the side facing the sun, which adversely affects growth. If you still need to move the plant, do on the pot a little note and focus on her again, setting the cactus on the windowsill with the same side to the sun as before.
Put the cactus in the winter in a dry and cool place. Wintering is a critical step in the annual growth cycle of the cactus when the plant is "resting" after the summer growing season and gain strength before the next season. This period is characterized by a state of absolute calm: the cactus is not in bloom and not growing. If wintering is successful, very soon the plant will appreciate the fresh buds without any additional effort on your part.
Do not replant the cactus, if he already gave the buds. Transplanting is a stress on any plant, so the buds of the cactus, most likely, reset.