Determining a factor for landscape plants other than turfgrass, part 2: Observation-based approach

An alternate approach is available for deriving a plant adjustment factor (K_L) for plants other than turfgrasses. It is based on the observations of horticulturists and involves the following:

• The adjustment factor for landscape plants other than turfgrasses is equal to the species factor multiplied by the vegetative density factor and the microclimate factor
• Or: K_L = K_S × K_D × K_MC
• where K_S is the species factor, K_D is the vegetative density factor, and K_MC is an appropriate microclimate adjustment factor

The steps necessary to use the equation are as follows:

• Assign a species factor, K_S.
• If necessary, adjust K_S.
• Assign a vegetative-density factor, K_D.
• Assign a microclimate factor, K_MC.
• Bring it all together: calculate K_L.

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