The image shows a close-up of a host Norfolk pine tree. The tree has long, thin, green needles that are densely packed together. The needles are a bright green color and appear to be healthy and well-maintained. The background of the image is blurred, but it appears to be a garden or a wooded area with other trees and shrubs. The text on the image reads "Host Norfolk pine - Problem: Nutrient deficiency (Potassium)".