The invention relates to the technical field of cultivation of
bougainvillea spectabilis, in particular to a cultivation method of small potted plants of
bougainvillea spectabilis. The cultivation method of the small potted plants of the
bougainvillea spectabilis comprises the following steps: (1) selecting dwarf bougainvillea as stock plants of the small potted plants; (2) strengthening management on the stock plants to promote
germination of new buds; (3) collecting green sprays which germinate in the present year from the peripheries of crowns of the stock plants; (4) taking top end parts of the sprays as cuttings, and
cutting the cuttings into flower soil blocks; (5) placing the flower soil blocks subjected to
cutting into a plug, and then placing the plug on a
water curtain greenhouseseedbed for root induction; and (6) after the cuttings grow roots,
transplanting the cuttings into a plastic
greenhouse for cultivation to form the small potted plants of the
bougainvillea spectabilis. According to the cultivation method of the small potted plants of the
bougainvillea spectabilis, by collecting the sprays on the peripheries of the crowns of the dwarf bougainvillea variety from July to August for
cutting propagation, due to the fact that the sprays are subjected to flower
bud differentiation before cutting, the flowering small potted plants of the
bougainvillea spectabilis canbe obtained in October in the present year; and the heights of the small potted plants which are cultivated for a year can be controlled within 30 cm, and the small potted plants flower for multipletimes,
cam be used for being placed indoors, and can be applied into municipal green walls and urban flower putting and hanging.