How good care Voidrake?

[OwlBlackX]

I bought Voidrake seeds. But, no idea how choose best "grade topsoils"?

Try trade for blue fox hide.

[Vidu]

We have three types of soil that actually have any influence and they all come in three stages (the higher, the better):
- Thanalan soil influence the crossbreeding chance
- La Noscea influences the HQ-chance
- Shroud influences the yield

Now, if you only want to trade it for bluefox hide you'd want as many Voidrakes out of it as possible, meaning using Shroud-soil would be your best option. Using grade 2 or 3 shroud soil will give you 3 voidrakes (instead of just 2 when using any other soil).
If you want to crossbreed Thanalan soil is the way to go.

http://www.ffxivgardening.com/seed-d....php?SeedID=71

This is a good site when you want to get into gardening - it shows you what crossbreeds have been reported possible with and for certain seeds.
As long as you dont care for crossbreeding though Shroud soil is the way to go.