Dracaena Marginata 五彩千年木


Dracaena marginata is an attractive, stiff-leaved plant with colorful foliage that sometimes goes by the name dragon tree. Most of the time, though, it’s sold simply as “Dracaena marginata” or just “Dracaena.” These are tough, drought-tolerant plants with aggressive root systems that make excellent houseplants —they are a little more forgiving than some of the other dracaena. It helps that they’re attractive and varied.

They are sometimes grown as single-stemmed plants; other times grouped or even braided together in the same pot.

Growing Conditions:

Light: Relatively bright light.
Water: Allow the plants to dry between waterings, but not completely. These are more susceptible to root rot, so be very careful never to allow them to sit in water.

Temperature: They thrive between 65ºF and 80ºF. They will suffer if it gets too cold and cannot tolerate freezing.
Soil: Loose, well-drained potting mix.
Fertilizer: They have a lower need for fertilizer, so fertilizer lightly at the beginning of spring or twice a year with controlled-release fertilizer.

Propagation:

D. marginata roots easily from root tip cuttings—so easily that it’s often used in dish gardens and readily propagated by nurseries and retailers. It takes about three weeks for a cutting to sprout roots, and rooting hormone isn’t generally necessary.

Dracaena marginata 五彩千年木

五彩千年木是龙舌兰科龙血树属植物,是一种小乔木。其有三色千年木、七彩千年木两种,原产热带、亚热带,性喜光、喜热、喜湿润的环境,也较耐阴。

栽培管理上要达到“六个要”。
一是光要亮。彩色千年木,因艳美夺目的色彩而特殊。唯一的要求,首先考虑,必须搁置在室内明亮处。否则叶面的彩色要褪淡,绿色要增多。同时叶片会发软而不挺拔,严重影响观赏价值。但又要注意,特别是夏天不能受到阳光直射,其他季节则不然。
二是温度要高。彩色千年木,因原产在热带,温度在20—35℃之间生长旺盛,长势良好。在冬季低于10℃,必须采取保温措施。尤其在我国的中部地区,更要注意。因为北方室内是增温的,华南地区气温在冬季也较高。所以彩色千年木,在我国南、北方越冬比较安全。但我国中部地区必须套有双层塑膜,在盆内控制干些,在室内南窗内,与外界隔离,不受冻害,让其休眠。到翌春,当气温升到10℃以上,才能逐步揭膜。在中午打开,早晚再扎好封好,当气温升到15℃左右,再全部解除塑膜。
三是根要干。一般盆土以不干不湿为宜,但以干为好。因彩色千年木根细而白嫩,所以宜干透才浇,浇到湿度适中即可,盆内不得积水或过湿。
四是叶要湿。彩色千年木由于原来在湿润的环境中生长。因而,空气相对湿度要在80%左右,尤其是夏秋两季,有时可向叶面喷些软水雾点(以酸性水和雨水为好)。
五是土要松。栽彩色千年木,要了解它的根系发达、白嫩,支根较多,但须根很少。为此,吸收肥水能力较差。因而,必须采用渗透性、通气性较强的土质。如北方的草炭土,南方的疏松的山泥,还有泥炭土均较好。
六是肥要薄。在生长期即在气温上升到20℃以上时,可以做到薄肥常施,每周施肥一次,以氮为主。夏秋两季也可施些进口的复合肥。
切忌施生肥、浓肥。叶面沾肥要冲洗干净,以免伤害叶片,影响观赏效果。

 

http://www.wikihow.com/Grow-Dracaena-Marginata
http://baike.baidu.com/view/675022.htm