In general, conifers protect themselves against disease through tannins in their sap. But pollution and inadequate care will impair their natural resistance and make them susceptible to otherwise harmless infections.

Da Michael Wachtler furono scoperti o descritti per la prima volta in assoluto come autore o coautore fin adesso 32 nuovi generi e 114 nuove specie.

Explore KarlGercens.com GARDEN LECTURES' 192218 photos on Flickr!

Coniferas de diferentes especies. Juniperus, chamaecyparis etc http://www.plantamus.es/ARBOLES-ARBUSTOS