
Rhododendron leaf spot
Control rhododendron leaf spot, with the advice from our guide.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Time To Act | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes | yes |
By entering your details, you are agreeing to site title terms and conditions and privacy policy. You can unsubscribe at any time.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
This disease, caused by the fungus Glomerella cingulata, results in rounded spots on the leaves. Although it's unsightly, leaf spot is only a significant problem on poorly growing or unhealthy plants, which might end up dropping a substantial number of leaves.
Symptoms
A fungal attack causes an outbreak of spots on the leaves. The dark marks are often surrounded by a pinkish-purple ring.
Find it on
Organic
Promptly remove and destroy all infected leaves, both on the plant and on the ground. Don't put them on the compost heap. Also, improve the growing conditions - add a mulch of well-rotted compost, and regularly feed and water. Keep deadheading.


Get a FREE Thrifty Gardener Guide
