in vitro ( flask ) seedling

Extremely big strong in vitro seedlings price per piece, ready for de flasking in Very acid soil conditions, pH 3.5 to 4.5 .Use rainwater only and add organic acids such as vinegar or citric acid to lower pH. Avoid too much rain in summer, could raise pH and threat plant. One of very few Cypripedium wich tollerates heat in summer Soil mix quarts 10 % and top layer,  rest pine debris, rotten pine wood ships. Not difficult if you respect these rules. Use  life sphagnum as indicator of pH and salinity. Sample of sphagnum can be added for free.