Black spot is caused by the fungus,
 
 Diplocarpon rosae
 
 . It is one of the most common diseases found everywhere roses are planted. The disease does not kill the plant outright, but over time, the loss of leaves can weaken the plant making it more susceptible to other stresses and winter damage.

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Black spot of Rose caused by Diplocarpon rosae

Mooventhan Palanisamy | Mon Dec 05 51594 18:56:40 GMT+0000 (Coordinated Universal Time)

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