{"id":2686,"date":"2021-08-19T00:03:34","date_gmt":"2021-08-19T07:03:34","guid":{"rendered":"https:\/\/depts.washington.edu\/hortlib\/pal\/pal-question-474\/"},"modified":"2024-04-11T12:55:39","modified_gmt":"2024-04-11T19:55:39","slug":"green-beans-and-pests","status":"publish","type":"pal","link":"https:\/\/depts.washington.edu\/hortlib\/pal\/green-beans-and-pests\/","title":{"rendered":"Green beans and pests"},"content":{"rendered":"

I have planted green beans three times because I have an<\/strong>
\nannual problem of the leaves either being completely chopped off or they<\/strong>
\nappear lacy and nearly gone. I have seen slug slime, so that may be some<\/strong>
\nof the problem, but what does the lacy leaf indicate? I also have a lot<\/strong>
\nof “potato bugs” or “sow bugs,” could that be the problem?<\/strong><\/p>\n

 <\/p>\n

According to The Organic Gardener’s Handbook of Natural Insect and
\nDisease Control<\/em> edited by Barbara Ellis (Rodale, 1996), lacy leaves on
\nyour bean plants might be the work of Mexican bean beetles. Parasitic
\nwasps (Pediobius foveolatus) can be used to control the Mexican bean
\nbeetle. As a last resort, you can spray or dust your plants with
\npyrethrin. See links here:<\/p>\n

From the Connecticut Agricultural Experiment Station<\/a><\/p>\n

From the University of California<\/a><\/p>\n

Large holes in the leaves may be caused by other beetles as well, such as
\nthe cucumber beetle,<\/a> which can be managed by protecting your plants with
\nrow cover like Reemay. If damage is severe, you can use pyrethrin or neem
\nspray.<\/p>\n

Small holes in the leaves may be the work of flea beetles, and the
\nmanagement is the same as above.<\/p>\n

The chopping off at ground level sounds like it could be the slugs eating
\nshoots as they emerge, or climbing up the plant and eating it down to the
\nground. It could also be the result of cutworms.<\/a> Look for these at dusk, and look during the day at or just below the soil surface. I manage these
\npests by looking for them frequently, and squishing them or cutting them
\nin half with my pruning shears.<\/p>\n

I had never heard of sow or pill or potato bugs (isopods) being a
\nvegetable pest, but apparently they do have that potential if the
\npopulation is large enough. See the discussion among gardeners on Houzz.<\/a><\/p>\n

You might try fooling the pests by planting your beans in a different
\nlocation, especially a raised bed.<\/p>\n

Beans–Diseases and pests<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

I have planted green beans three times because I have an annual problem of the leaves either being completely chopped off or they appear lacy and nearly gone. I have seen slug slime, so that may be some of the problem, but what does the lacy leaf indicate? I also have a lot of “potato bugs” or “sow bugs,” could that be the problem?   According to The Organic Gardener’s Handbook of Natural Insect and Disease Control edited by Barbara…<\/p>\n

Continue reading Green beans and pests<\/span><\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"template":"","keyword":[643],"class_list":["post-2686","pal","type-pal","status-publish","hentry","keyword-beans-diseases-and-pests"],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal\/2686"}],"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=2686"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/keyword?post=2686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}