4.3.1.4 Fungal Diseases

Question 1

What is rose black spot?

Answer 1

• fungus that causes purple or black spots to develop on leaves of rose plants

Question 2

How is rose black spot spread?

Answer 2

• water
• wind

Question 3

What happens when roses have been infected with rose black spot?

Answer 3

• leaves turn yellow and drop off
• means less photosynthesis can happen so the plant can’t grow well

Question 4

How do gardeners treat rose black spot?

Answer 4

• fungicides
• stripping the plant of affected leaves (need to be destroyed so fungus can’t spread)