A few weeks ago on ebay I purchased 10 rooted shimpaku juniper cuttings.
They sat out in the garage until the temperatures warmed up. I was worried being from northern Florida that they wouldn’t be so cold hardy. Upon a soil debate on Bonsai Nut, I decided to try two different potting mixes for them. Last night and this afternoon I repotted them all.
One set were put into two parts pumice, one part turface, one part pine bark.
The other set were put into two parts pumice, one part turface, and one part akadama.
All of the plants had mycohrizae spores dusted on the roots, then the top soil was dusted, then they were watered.
The five with the bark are in back. The second set with akadama are in the new pots in front.
I would have used more akadama, but felt like it would be a better comparison with equal ratios. I plan on treating them the same as far as fertilizing and watering goes. I would like to see if there is a difference in vigor and growth between the two mediums. The plan is to grow them out as whips and then wire them into a twisted shape then in a couple years on up-pot them, probably into pond baskets.