A part of a viburnum hedge planted in a 50 cm wide and 60 cm high planter has the tip of the newly blossomed leaves blackened and after a while they fall. In the ground, although watered there are parts that remain dry and are infested with yellow spores that subsequently they become yellow mushrooms.
Best regards and congratulations for the site.
Dear Fabiola and Luigi,
Thank you for contacting us about your Viburnum problem.
The description he made of the diseases is rather generic, but attributable to an attack of pathogenic fungi. Viburnum is subject to various types of fungal adversity, such as Verticillosis, which causes defoliation and desiccation of the secondary branches and subsequently of the entire branch, or Downy mildew which causes the leaves to shrivel and fall which show the fruiting on the lower page. mushroom (powder-like), Gleosporium responsible for leaf blackening.
This type of disease is favored by a very humid climate, water stagnation in the soil and clayey and compact soil (indicative of the development of fungi on the ground).
We recommend for a recovery of the plants to eliminate the diseased and dry parts of the plants, improve the drainage of the soil, carry out pesticide treatments and regular fertilizations to reinvigorate the plant.