With the debate on how well different soil mixes effect vft's growth, I have 2 plants of the same size, 1 in 90%sand-10%peat and the other in 50:50 peat perlite. My hypothesis is that the 9:1 sand/peat will work best as this is what they grow in in their natural environment. I will keep you updated pn which works best. The 1 in 9:1 mix is growing faster right now.