Nutrient Poor Bog Garden
I just got soil test results for my bog garden:
Loamy Sand (50/50 Peat/Sand)
Nitrate Very Low
Potassium Medium High
Calcium Medium High
I'm trying to raise Sarracenia purpurea, Platanthera blephariglottis, Calopogon tuberosus, Spiranthes cernua, Pogonia ophioglossoides, and Platanthera grandiflora.
I'm hoping this constitutes a nutrient poor bog. I only water with rain water, and the area is surrounded by drainage so that no groundwater enters the bog. I'm worried that I started with sand that contained too much nutrients.
My question is - are the P, K, Ca, and Mg levels too high?
The testing was done by the CT Agricultural Experiment Station - they test for a standard list of elements. Should I do additional testing for different nutrients?
Any suggestions or comments?