天門冬科
學名:Dracaena marginata hort. 'Tricolor Rainbow'
英名:Rainbow Tree
別名:彩虹竹蕉、彩紋竹蕉
竹蕉屬常綠灌木,原產馬達加斯加。直立莖分支角度狹小,表面有三角狀葉痕。輪狀互生長線形葉,基部抱莖,聚生於莖枝頂,新葉向上生長,老葉四散垂懸。原種葉色綠有紅緣,本種是葉中白色或綠色,間有白、綠、黃、紅、紫紅色或鮮紅色的縱條紋的斑葉園藝品種。頂生圓錐花序,花期春季。漿果球形,熟時紅色,具1~3顆種子。
An evergreen shrub in the genus Dracaena, native to Madagascar. Stem erect and branched in narrow crotch angles, with triangular leaf marks on the surface. Whorled leaves long linear in shape, amplexicaul at the base, clustered at the top of branches, new leaves growing upwards, while aging leaves sagging and drooping. The parental species produces green leaves with red margin while this variegated cultivar bears leaves with white or green colors in the middle and surrounded by yellow, red, fuchsia or bright red vertical stripes. Panicles terminal, flowering in spring. Berries spherical, red when ripe, with 1-3 seeds.
全日照或半日照溫暖環境,光線充足時葉色才會鮮明,室內長期久放葉片會褪色且軟弱。耐旱性強。需注意介殼之危害。以扦插法繁殖。
The plant normally grows in warm environments with full or partial sunlight. Sufficient light is required for the foliage color to stay bright or the leaves will fade and get weakened after long-term indoor placement. Strong drought tolerant, but prone to scale insects. Propagated by cuttings.
造型特異,葉色鮮明,在綠色植物環繞中相當突出,可作庭園景觀樹、小品盆栽、室內大型盆栽、插花材料等應用。
The species is a highly-valued ornamental among green plants for the unique shape and bright foliage colors, they are commonly grown as garden ornament trees, small potted plants, large indoor potted plants, and used as flower arrangement materials.