奥拉AURA

在长出一个分枝前，树形仙人掌可以长到20英尺高。200到300年后，当它长到50英尺时，可能会发展出20到30个分支。成熟的树形仙人掌的水平侧根长在土壤的表面几英寸处，它的表面有手风琴一样的褶皱，通过这些舒展的褶皱，它可以从夏季的雨水中吸取一吨的水。而且，它不会蒸发太多的水分。我让西内给你一个链接，如果你感兴趣的话，你可以得到更多的信息。
The saguaro may grow 20 feet tall before growing a branch. It may develop as many as 20 or 30 branches by the time it reaches 50 feet after 200 to 300 years. With its fine lateral roots in the top few inches of soil, a mature saguaro can drink a ton of water from a summer shower by expanding its accordion-like pleated skin. It doesn’t let much moisture evaporate. I asked Sine to put in a link for you to get More info about it if you’re interested.