Hemp Technologies has partnered with Transmineral to supply specially prepared renders/plasters/pigments to which you just add water, mix and go to work.

St. Astier is a tried, tested and approved
lime plaster application over Hempcrete. It’s as simple as mixing with water using a drill and a rigid paddle attachment in a 5 gallon (20 litre) pail or using a mason’s paddle-style mortar mixer.

EcoMortar® is a premix based on pure and natural hydraulic lime (NHL) and sand.

for USA/Canada customers order here