Downy mildew of the Rose (Peronospora Sparsa)

It forms initially yellowish and translucent spots which then extend into large brown areas, with a rather varied symptomatology. The optimal temperatures for development are around 18 ° C with high humidity, close to 100% and wet foliage for at least 3 hours.
It affects all the green parts of the plant, both young vegetation and less herbaceous tissues.

The preventive treatments are copper-based and those performed for scab can be valid, while for the curatives both broad-spectrum fungicides (Dodine) up to triazoles, cupric and Fosetyl aluminum can be used. In the rose, it appears above all in summer, after the first flowering, in hot, muggy places with little ventilation.

Discover our most disease resistant varieties:

 13.20 25.00
In offerta!
 11.00 25.00

Floribunda o Rosai a Mazzi

Dolomitica ® Dalmibert (Novaspina 2019)

 9.00 25.00

Rosai Rampicanti Climber

Millamy® Dallamy (Novaspina 2016)

 13.20 25.00

Grandi Fiori - Ibride di Tea

Marisa® (Zanmari, R.Zandri 2015)

 9.50 25.00

Floribunda o Rosai a Mazzi

Peace in You® Dalwiter (Novaspina 2016)

 10.00 16.00