一般多年生宿根草花,可以连年正常生长开花,而菊花却不能利用老墩上着生的新枝任其自然生长,否则长势将越来越差,花也越开越小。这是因为菊花具有短日照、喜凉爽的特性,老根在春夏虽一直生长,但因生长期正值日照长、温度高的季节而不能孕蕾,在长至30余片叶时,便会发生自然伫头或假蕾(柳 Generally perennial perennial flowers, perennial flowers can grow normally, but the chrysanthemum can not use the old pier on the new branches of any of its natural growth, or growing will be worse, the flowers more and more small. This is because the chrysanthemum with short sunshine, hi cool characteristics, although the old root in spring and summer has been growing, but due to the growing season is sunshine, the season of high temperature and can not pregnant bud, grow to more than 30 leaves, then Occurrence of natural queue head or bud (Liu