# Post-Collection Potting Soil

**URL:** <https://forum.bonsaimirai.com/t/post-collection-potting-soil/1882>\
**Category:** Horticulture\
**Created:** [October 14, 2018, 2:41pm UTC](https://forum.bonsaimirai.com/t/post-collection-potting-soil/1882 "2018-10-14T14:41:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Ian\_Guggs](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.bonsaimirai.com/ian_guggs/32/2353_2.png) [@Ian\_Guggs](https://forum.bonsaimirai.com/u/Ian_Guggs)\
**Post date:** [October 14, 2018, 2:41pm UTC](https://forum.bonsaimirai.com/t/post-collection-potting-soil/1882/1 "2018-10-14T14:41:17Z")

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1. In this stream Ryan says that he uses 100% pumice on collected trees and I was wondering if this applies to deciduous trees as well or should you add other components?

2. He also says to remove the 1/16” pumice in order to give the tree more oxygen but since he works with a lot of larger trees would this still apply to smaller trees and at what size would you stop pulling out the 1/16” particle?