Brush Competition Level - An access amount of brush shading can deprive shrubs and trees of water, sunlight, and nutrients. A scale of 0-3 is used to indicate the degree of brush shading within a 2' radius. Zero indicates there is no brush competition, 1 indicates brush competition within 2' of the planted stock with <25% shading, 2 indicates brush competition within 2' with 26-50% shading, and a 3 indicates brush competition within 2' with >51% shading.

Source - The source of brush providing the competition is also noted, such as "BB" for blackberry competition.