{"id":2957,"date":"2019-09-18T00:08:05","date_gmt":"2019-09-18T07:08:05","guid":{"rendered":"https:\/\/depts.washington.edu\/hortlib\/pal\/pal-question-472\/"},"modified":"2023-08-09T09:52:31","modified_gmt":"2023-08-09T16:52:31","slug":"honeysuckle-and-common-diseases","status":"publish","type":"pal","link":"https:\/\/depts.washington.edu\/hortlib\/pal\/honeysuckle-and-common-diseases\/","title":{"rendered":"honeysuckle and common diseases"},"content":{"rendered":"

I noticed my honeysuckle, which is intertwined<\/strong>
\nto look like a topiary bush with the greens and flower all bunched<\/strong>
\nup at the top, to have yellowing of the leaves and drop off. Why<\/strong>
\nare the leaves yellowing? It smells lovely and is green on the<\/strong>
\noutside, but if you look under the canopy you can see many yellow<\/strong>
\nleaves. Is it a disease? Should I use a fungicide?<\/strong><\/p>\n

 <\/p>\n

There are a few possibilities. It might be a kind of leaf blight, as
\ndescribed by Iowa State University Extension.<\/a><\/p>\n

Leaf blight is a fungal problem, but the control methods described above are not
\nnontoxic, so you may want to look for a safer fungicide (example here<\/a>), and also
\ntry to prevent the ideal conditions for fungus. Avoid wetting the leaves
\nof the plant, and make sure there is good air circulation around the
\nplant (by siting it properly, and by pruning to keep the plant’s shape
\nopen).<\/p>\n

Yellowed leaves could also be caused by scale, which is an insect. Do you
\nsee small bumps on the leaves and stems? If so, here are recommendations
\nfrom The Organic Gardener’s Handbook of Natural Insect and Disease
\nControl<\/em> edited by Barbara Ellis (Rodale, 1996):<\/p>\n

“Minor infestations can be controlled by scraping the insects off the
\nplant with your fingernail, and by pruning out the most infested parts of
\nthe plant. You can also use a soft brush and soapy water to scrub scales
\noff the stems, or you can apply dormant oil to the trunk and stems of the
\nplant just before growth begins next spring, and use superior oil during
\nthe growing season.”<\/p>\n

Because I’m not certain which type of problem your honeysuckle may have,
\nyou should bring a sample to a Master Gardener Clinic.<\/p>\n","protected":false},"excerpt":{"rendered":"

I noticed my honeysuckle, which is intertwined to look like a topiary bush with the greens and flower all bunched up at the top, to have yellowing of the leaves and drop off. Why are the leaves yellowing? It smells lovely and is green on the outside, but if you look under the canopy you can see many yellow leaves. Is it a disease? Should I use a fungicide?   There are a few possibilities. It might be a kind…<\/p>\n

Continue reading honeysuckle and common diseases<\/span><\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"template":"","keyword":[63,803,506],"class_list":["post-2957","pal","type-pal","status-publish","hentry","keyword-fungal-diseases-of-plants","keyword-insect-pests","keyword-lonicera"],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal\/2957"}],"collection":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal"}],"about":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/types\/pal"}],"author":[{"embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/users\/4"}],"wp:attachment":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/media?parent=2957"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/keyword?post=2957"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}