Symptoms range from mild-green to prominent-yellow leaf mosaics. The unfolding new leaves show mottles and streaks. Stunting can vary from moderate to severe and certain strains of the virus can cause rosetting of plants. Generally, as the young leaves unfold, they appear mottled and develop parallel streaks. The symptoms, which are more pronounced in low-lying areas because these areas favor the fungal vector, are most prominent in early spring growth and rarely appear in the autumn.