Recognise viruses

1st December 2020

Recognise viruses

 This rose leaf shows the mottled variegation which is characteristic of many viruses : symptoms may be transient, appearing early in the growing season and then disappearing later; or in woody shrubs they may affect a shoot one year and then not recur.

Topics related to this post:
Tip of the day

PreviousNext

#LIST_NEWS_POSTS_SUMMARY#