Hop Latent Viroid – HLVd
Hop Latent Viroid, HLVd for short, is an infectious viroid first discovered in hops and most recently in its close relative, cannabis. HLVd infection in Cannabis can be difficult to detect in the vegetative growth stage, as it is most apparent in the late maturation stages of flowering. Infected plants show a significant reduction in yield and quality of flower. Shorter growth, looser buds, smaller leaves, tighter node spacing, reduced trichome production and overall reduction in vigor are all common characteristics of an HLVd infected plant. This viroid often goes undetected and can easily spread to other cultivars or nearby plants. It is most commonly transmitted through tools used to prune and propagate plants.