{"id":3091,"date":"2019-09-21T00:10:19","date_gmt":"2019-09-21T07:10:19","guid":{"rendered":"https:\/\/depts.washington.edu\/hortlib\/pal\/pal-question-720\/"},"modified":"2023-08-09T09:30:34","modified_gmt":"2023-08-09T16:30:34","slug":"controlling-slug-and-snail-damage-on-cannas","status":"publish","type":"pal","link":"https:\/\/depts.washington.edu\/hortlib\/pal\/controlling-slug-and-snail-damage-on-cannas\/","title":{"rendered":"controlling slug and snail damage on cannas"},"content":{"rendered":"

My canna has a leaf with a set of 9 holes in a straight row, all symmetrical with each hole a bit bigger than the one to its right. Any idea what’s causing this? I must say that we’ve been greatly amused with our yard this summer–it seems like every day there’s some new critter or discovery.<\/strong><\/p>\n

I found the following information in The Gardener’s Guide to Growing Cannas<\/em> by Ian Cooke (Timber Press, 2001):
\n“Cannas seem to be particularly attractive to slugs and snails and can be totally devastated by them. Unless you control them, expect young leaves to unfurl with cut patterns like a child’s paper-tearing exercise!” (This is a Britishism for what we think of as papercutting, like paper snowflakes.)<\/p>\n

The easiest approach to slug and snail control is to use the newer generation (organic garden-acceptable, but not good to use where runoff will enter lakes and streams) slug baits which are wheat gluten-based pellets with iron phosphate as an active ingredient (such as SlugGo<\/a> and EscarGo<\/a>). Be aware, however, that there are reports of dogs eating the bait and developing iron toxicosis.<\/a><\/p>\n

The safest approach is to use the following non-chemical controls (traps, barriers, natural predators):<\/p>\n

Northwest Coalition for Alternatives to Pesticides<\/a>, click on link to read document.<\/p>\n","protected":false},"excerpt":{"rendered":"

My canna has a leaf with a set of 9 holes in a straight row, all symmetrical with each hole a bit bigger than the one to its right. Any idea what’s causing this? I must say that we’ve been greatly amused with our yard this summer–it seems like every day there’s some new critter or discovery. I found the following information in The Gardener’s Guide to Growing Cannas by Ian Cooke (Timber Press, 2001): “Cannas seem to be particularly…<\/p>\n

Continue reading controlling slug and snail damage on cannas<\/span><\/a><\/div>\n","protected":false},"author":4,"featured_media":0,"menu_order":0,"template":"","keyword":[873,91],"class_list":["post-3091","pal","type-pal","status-publish","hentry","keyword-canna","keyword-slugs"],"acf":[],"_links":{"self":[{"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/pal\/3091"}],"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=3091"}],"wp:term":[{"taxonomy":"keyword","embeddable":true,"href":"https:\/\/depts.washington.edu\/hortlib\/wp-json\/wp\/v2\/keyword?post=3091"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}