盆栽耐寒花卉如月季、梅花、碧桃、玉兰等,在长城以南地区,一般不需加任何防寒措施,即能安全越冬。倘若在室内越冬,会使花卉处于昏迷的半休眠状态,甚至长出新的叶芽,从而消耗掉部份养料,影响来年正常生长。例如,很耐寒的半落叶花卉月季,在气温5℃时叶芽即开始萌动,但在室内由于光照不足和通风不良,新生的叶芽非常黄瘦。于是本来很耐寒的花卉被“驯顺”得十分娇气。初春如过早地移出室外,就是不死,也长势细弱,花开瘦小,香气清淡。 Potted cold-blooming flowers such as rose, plum, Betau, Magnolia, etc., in the south of the Great Wall, generally do not need to add any cold measures that can safely wintering. If the winter in the room, the flowers will be in a semi-dormant state of coma, and even grow new leaf buds, which consume part of the nutrients, affecting the normal growth of the coming year. For example, very cold, semi-deciduous floral rose, sprouts begin to sprout at temperatures of 5 ° C, but new leaf buds are very yellowish indoors due to poor lighting and poor ventilation. So originally very hardy flowers were “tame” was very delicate. Early spring, such as premature move out of the house, is immortal, but also growing weak, thin flowers, aroma light.