Abstract: A portable blind apparatus is provided for mounting on a tree and includes an umbrella mounting assembly for mounting on the tree. A collapsible umbrella is supported by the umbrella mounting assembly. The umbrella includes a collapsible umbrella canopy and a canopy support member connected to the umbrella canopy. A flexible net is draped over and supported by the umbrella. The flexible net can be fixed to the canopy support member with a quantity of adhesive material. Net straps are connected to the net for stabilizing the net with respect to the tree. A person who is inside the internal region defined by the hanging net and the umbrella is concealed from view and is protected from becoming wet by rain or snow. The flexible net can include windows or portholes.