Black spots on Scabiosa leaves.

Black spots on Scabiosa leaves. What can I do about this black spot? What causes them? My plants are about three years old in this location. Is this a common problem with older Scabiosa plants?

1 Comment (Open | Close)

1 Comment To "Black spots on Scabiosa leaves."

#1 Comment By BushDoctor On 04/08/2018 @ 8:04 pm

This can become a problem if it is overly wet in your area for a long period of time. This can cause a wide range of infections in the plant. There are many remedies for this using copper sprays, but I use something a little different that works for a very broad range of infections.

Use just a little dolomitic lime, and wettable sulfur around your plant in the soil, and this will help. The sulfur will kill off the infection, while the dolomitic lime will restore the soil pH as it starts to break down. This will be about when the sulfur finishes.

This article will give you more information on the care of these: https://www.gardeningknowhow.com/ornamental/flowers/pincushion-flower/scabiosa-pincushion-flowers.htm ^[1]

Article printed from Gardening Know How Questions & Answers: https://questions.gardeningknowhow.com

URL to article: https://questions.gardeningknowhow.com/black-spots-on-scabiosa-leaves/

URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/flowers/pincushion-flower/scabiosa-pincushion-flowers.htm: https://www.gardeningknowhow.com/ornamental/flowers/pincushion-flower/scabiosa-pincushion-flowers.htm

Have any questions about this topic? Visit us at https://questions.gardeningknowhow.com to ask your questions and get friendly answers from gardening experts.

You can also find us at:
'Like' us on Facebook: https://www.facebook.com/gardeningknowhow
Follow us on Twitter: https://twitter.com/gardenknowhow - @gardenknowhow
Follow us on Pinterest: https://pinterest.com/gardenknowhow/