bonsaiTALK Community - View Single Post - Lava Rock in the bottom of the pot

One thing to keep in mind is that your smaller soil is giong to infill the big stuff, and to some extent change he course drain layer to essentially the same as you regular mix. If all you are doing is using it to lessen the amount of regular soil than mission accomplished.

What kind of trees? 70 % seems more than a bit high for a lot of bonsai.

Thinking too that it's too tall, and will end up wetter towards the bottom, go to something shorter. Bulb pans maybe, or a grow box, 6-8" should be plenty.

16-Mar-2007	#8
Mcspeed bonsaiTALK Master Chief Join Date: Mar-2006 Location: West Springfield Massachusetts Country: USA USDA Zone: zone 5 AHS Heat Zone: ? Posts: 1,203	One thing to keep in mind is that your smaller soil is giong to infill the big stuff, and to some extent change he course drain layer to essentially the same as you regular mix. If all you are doing is using it to lessen the amount of regular soil than mission accomplished. What kind of trees? 70 % seems more than a bit high for a lot of bonsai. Thinking too that it's too tall, and will end up wetter towards the bottom, go to something shorter. Bulb pans maybe, or a grow box, 6-8" should be plenty.