Have these in Ohio, Konjac in ground at 9 inches deep.....good preformer.
I use a soiless mix that I make that I USE ON EVERYTHING... just a little more of this and that, depending what kind of plant your growing, the only thing missing in the photo
is the Soil conditioner which is pine fines which are sold as a soil conditioner.
fertilizers are a generic granular at 18 18 18.....seem to work good for me.
In the woods soil is supplemented with a lot of wood chips(8 inches) and leaves.
I currently have a bunch of these in dormancy in the garage, in pots ready to go....
Sauratum, Konjac, Paeoniifolius, Bulbifer, . various bulb sizes , some mature and lots of babies.
My growth cycle is May through September, my plants do all their business in short period of time. They flower then pop out a leaf for 3 months then gone. I leave many in containers while dormant...... I believe It cuts down on desiccation( moisture loss) of the corm . I have only had a few rot over the years
I treat my plants as annual bulbs......that is what they are.
By September they are Back in the garage stacked up in containers ready to go next spring.
The containers dry up somewhat but there is still some moisture.
Garage temp is 35 to 45
I also have many in the ground year round Sauromatum, Konjac.
Konjacs in full sun as well as Sauratums.....best bulb size happens in the ground for me, however they do well in part shade also.
If I knew this was going to popular with a few people ...... I would have taken more pics.
Of course this is my humble aroid opinion.
