And also they have extensive root systems to collect water from a large area.

它们还有广泛的根系，可以从大面积收集水分。

The cons are that it's pretty granular, and so if you've got a plant with really extensive root systems, it can fill in those gaps pretty quickly, and it can cause some problems.

缺点是它质轻，所以如果你有一株根部区域比较松的植物，它可以很快填补这些，这可能会导致一些问题。