Does anyone have any suggestions on nutes soils or anything else on growing a 100% Sativa plant. I have grown Indica before but didnt know if there was that much of a difference.
There's a lot of difference between growing pure Sativas and Indicas - Indicas are easy, Sativas are not, for two principle reasons: 1) Pure Sativas stretch and grow very tall and spindly; 2) All Canna plants are high light plants, but Sativas particularly so, due to their origins being in tropical and sub-tropical climates, which means their leaf widths are much slimmer than Indicas meaning less surface area for light.
The biggest problem is their stretch and height - getting far too big for the average grower grow space very quickly, meaning they have to be flowered at a relatively small size - this affects and reduces yield and potency if grown from seed.
To flower when the plants are small means very little vegetative growth time this usually means the plants are flowered when they're not yet sexually mature enough to flower and therefore will be going against their natural genetic program. Plants produce more Cannabinoids the older it gets and a sexually mature plant will always produce more Cannabinoids than a non-sexually mature one.
This rather suggests that the best way to grow Sativas is to grow out a mother and take clones from it. This allows you to flower the clones as soon as they're rooted and the less vegetative time is of no consequence with regards to potency. This also alows you to control their stretch and height to a manageable size.
Pure Sativas will also stretch unnecessarily if given an excess of Nitrogen, so you need to ensure mimimal levels of Nitrogen in the first two to three weeks of flowering when stretch is at it's worst.
For more on stretching and how to minimise it see this article -
https://www.rollitup.org/newbie-central/16524-stretch-what-how-you-can.html