More than 30 varieties of hydrangeas were featured last month at Flower Dome in Gardens by the Bay Singapore.
In this new video, more hydrangeas are shown from all the visits to Flower Dome last month.
Did you know, the availability of aluminum ions in the soil affects the colour of the hydrangeas. In acidic soil (pH below 5.5), aluminium is readily available for the plant to absorb, which produces blue flowers. In alkaline soil (pH above 7), the aluminium is not readily available, resulting in pink blooms.
The name hydrangea comes from the Greek words "hydro" (water) and "angeion" (vessel or jar) as it was inspired by the cup-like shape of its seed pods, and also hydrangeas have high water requirements and can wilt if they dry out.
The big showy colourful parts that look like petals are actually sepals, the protective leaves that surround a flower.
January 5th id dedicated as World Hydrangea Day.
上个月，新加坡滨海湾花园的花穹展出了30多种绣球花。
在这段新视频中，展示了上个月参观花穹时拍摄的更多绣球花。
你知道吗，土壤中铝离子的含量会影响绣球花的颜色。在酸性土壤（pH值低于5.5）中，铝离子易于被植物吸收，从而开出蓝色花朵。而在碱性土壤（pH值高于7）中，铝离子不易被吸收，导致花朵呈粉色。
绣球花这个名字来自希腊语“hydro”（水）和“angeion”（容器或罐子），因为它的灵感来自其种子荚的杯状形状，而且绣球花对水的需求很高，如果干涸就会枯萎。
看起来像花瓣的大而艳丽的彩色部分实际上是萼片，即围绕花朵的保护性叶子。
1月5日被定为世界绣球花日。
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