無患子屬落葉喬木，原產南亞至東亞的亞熱帶及熱帶地區。互生羽狀複葉，長橢圓形小葉5~8對。圓錐花序頂生，綠色花瓣5枚。圓形像龍眼的果實黃褐色，直徑2~2.5公分。開花春季，結果秋季。

A deciduous tree in the genus Sapindus, native to subtropical and tropical regions from South Asia to East Asia. Alternative pinnate compound leaves with 5 to 8 pairs of long elliptical leaflets. Terminal panicles with 5 green petals. Longan-like fruits are yellowish brown and round with a diameter of 2 to 2.5 cm. Flowering in spring and fruiting in autumn.

全日照或半日照溫暖環境，因為植株高大，必須選擇土層深厚且空間寬廣的位置種植。植株略耐乾旱，根系忌積水潮濕。萌芽力較弱，不宜頻加以大幅度的修剪。春至秋季每季施用一次長效性肥料。

full-sun or partial shade warm environment. The tree is tall so it’s better planted in locations with deep soil and open space. Slightly drought resistant so avoid waterlogged in the roots system. The plant germinates poorly, so it can’t survive frequent and hard pruning. Apply long-active fertilizers once every season from spring to autumn.

秋季葉片變黃能帶來季節變化的景色，適合作為庭園遮蔭樹與行道樹使用。木材輕軟，能製作箱板及器具。中國古代認為無患子製成的棍棒，可以驅魔殺鬼，因此命名為無患。果皮含有皂素，是自古即用於洗滌的天然肥皂。

Foliage turn yellow in autumn and exhibits seasonal changing, suitable for use as a shade tree in gardens and as street tree. The light and soft wood can make into boxboards and utensils. In ancient China, people believed the sticks made from the wood could be used to in exorcism, so they were named as “trouble-free” in Chinese. Because the fruit peel contains saponin, it’ s a natural soap that has been used for washing since ancient times.