专治疑难杂症,你们都不喜欢google的吗?你的植物叫做 Dracaena Mass Cane. 看我帮你找的答案吧。; c8 a# h1 K, }0 R# s. a h
Your problem is two-fold. Where do you live? Do you have city water with flouride added? Dracaenas are very sensitive to flouride. They react by getting brown spots on the leaves as you describe. They also hate overwatering. Watering once a week is probably too much. The plant needs to be very dry before you water it again. Remember, even if the surface of the soil feels dry it is still moist or even wet a few inches below the surface. You can get a moisture meter with a soil probe at many garden centers for around $10.00. That will tell you if it is dry down in the root zone. Too much water makes the roots rot and it will take time for it to grow new roots. When you start to see new leaf growth you will no it is on the mend.7 V) k% n x0 k) @: {# P0 l
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To get rid of the flouride you need to let the water sit in an open bucket for 48 hours before using it to water your plants. The flouride and chlorine will dissipate into the air then the water is safe for the dracaena. Or you can find bottled or filtered water for it." y6 [& |' j& a- n" t+ M* [9 {
. u& h# ]3 Q5 T- L7 h2 Q; ~As for trimming it. You can prune the dry brown leaves off and once it starts growing new leaves you can even cut it back and let it grow a whole new top. Give it a dose of Miracle Grow once a month but be very careful about not watering too much. Probably every 2 to even 3 weeks is close enough. Roots need breathing periods between watering so they do not begin to rot. If you have more questions write again. Good luck.
9 S* `$ \, G# k( v Q- t& w; T. F a' l" k谢谢楼上这位兄弟。我也喜欢用google,但查出的结果是太多的原因会导致这种情况,多浇水,少浇水,太阳直晒,不见阳光,缺少肥,,,所以才来这里碰运气。看来还是运气不错,你和版主都给帮忙分析。 8 G* F1 B* ]4 D. w8 t$ S我从商店买回来就浇过1次水,才1,2天叶子就开始黄,所以我觉得应该不是浇得太勤。倒是你说的水里含fluride有道理,我从来都是用自来水浇花,养死了2盆,没死的长得也很慢,甚至几个礼拜张一片叶子。这不才弄盆巴西木,就开始黄了。郁闷呀。但是不敢换盆子,有一盆植物就是我换盆的第二天就开始掉叶子,直到死掉。还有盆吊兰的根都满满一盆了,犹豫再三也没敢换。