Kiryuzuna is a kind of volcanic sand that contains a large amount of iron oxide and is heavier than red jade soil.
It is different from river sand and when pinched, the surface layer will also have some soil debris peeled off.
After all, it is produced by volcanoes, unlike river sand that has been washed by water for a long time.
In addition, because the sand is hard and not easy to crush, it is suitable for succulents that do not like to change pots.
It can improve the drainage of cultivated soil, such as red jade soil and deer swamp soil.
It is suitable for conifer, juniper, and pine trees, although it can be used for other species too.
 
Note: All 1 litre packs have been sifted before repacking into a clear ziplock bag.