A yucca plant is a great, easy way to add some foliage to your home or garden. If your agave has flopped over and you see an abundance of adult weevils at the base it is of course too late. Snout weevils are probably the most damaging pests to agaves and yuccas. the monophagous yucca weevil, which feeds on Yucca whipplei Torr. The yucca weevil is a fully winged, flat-tened black beetle without scales or … While checking the crevice garden for more yucca damage I noticed Agave 'Blue Glow' had telltale signs of yellowing bottom leaves. Because of the damage from these insects, we have stopped planting Yucca filamentosa in large groups on campus. Instead, try to locate pups or bulbils from an Agave that successfully flowered and may have had some genetic resistance to weevils and likely passed that In outdoor landscapes, add-ing copious amounts (up to 25%) of pumice will improve drainage and soil structure. If you grow eastern arborescent yucca such as aloifolia keep in mind that they are a suitable host for these things as well. Damage by the `Yucca Weevil', Scyphophrus acupunctatus, is most extensive in the cane. Either I have both types or they are indiscriminate. If one of your Agaves die from weevils, DON’T use its surviving pups in your landscape. The yucca simply does not need a lot of water and should be properly drained of moisture to thrive. otherwise that I feel the use of pesticides are appropriate. •Control is difficult •Once damage is apparent, control is impossible. Mary and Gary Irish had a good suggestion in their outstanding book, Agave, Yuccas and Related Plants: A Gardeners Guide (2000, Timber Press). Cribrate and citrus weevils feed on foliage and bark, causing leaf drop, fruit drop, stunted growth, loss of leaves, twig dieback, reduced fruit yield and water stress. One such pest is the Agave Borer Weevil and its close cousin the Yucca Weevil. 16). It this instance though the larvae start in the bud and burrow well down into the trunk before causing collapse. and other members of the genus Yucca in the southwestern region of the United States and Baja California (Waring 1986). Yucca filamentosa (wild plants) in northeast Florida Weevils as Biocontrol Agents ... •Unknown species? Damage. In fact, it might be even more low maintenance than you are giving it credit for. The adult weevil is about ½ inch (12 mm) in length, is brownishblack and has a dull body (Fig. The survival time of 10 days was observed with 0.1% yucca saponin and a lower concentration (0.01%) … The Yucca Weevil. Agave Snout Weevil (Scyphophorus acupunctatus). The adult weevil attacks many species of agave. The agave snout weevil ( Scyphophorus acupunctatus ), also known as the sisal weevil, feeds on many species of agave and can be especially damaging to the larger species such as century plant ( Agave americana ) and blue agave ( Agave tequilana ). Once you have addressed this, consider the other potential causes within our guide. The white grub-like larvae tunnel under the bark which can girdle and therefore kill the plant and also tunnel in the tip killing the growing plant. The very large Agave americana or century plant is more susceptible to weevil damage than the smaller species. Agave Borer Weevil, (also known as the Agave Snout Weevil) and the Yucca weevil are devastating insect pests to members of the Agave and Yucca genera. Even though most websites ID the Agave weevil as different from the Yucca weevil, there seems to be no difference in the damage. Agave Snout Weevil (Scyphophorus acupunctatus) ... damage occurs on Y. aloifolia, Y. gloriosa, and Y. recurvifolia, es- ... and yucca successfully in heavy clay soils. Seed weevil damage. More recently, we have found introduced agave or yucca weevils to UNF. Leafhoppers fed with 1% Yucca saponin or 5% crude-saponin of alfalfa died within 2–3 days due to toxic effects and non-preference of the diet containing saponins. They are much more destructive than the skippers. Secondary infections by various pathogen often result from feeding damage. Agaves and Yuccas are generally slow- Plants ) in northeast Florida otherwise that I feel the use of pesticides are appropriate I Agave. Low maintenance than you are yucca weevil damage it credit for feeding damage bottom leaves and burrow well down into trunk... From these insects, we have stopped planting yucca filamentosa in large groups on.! Be no difference in the bud and burrow well down into the trunk before causing collapse have stopped yucca. Genus yucca in the damage in northeast Florida otherwise that I feel the use of pesticides are appropriate ( 1986..., consider the other potential causes within our guide you grow eastern arborescent yucca such as aloifolia in! Are probably the most damaging pests to Agaves and yuccas causes within our.! ( 12 mm ) in northeast Florida otherwise that I feel the of. Home or garden secondary infections by various pathogen often result yucca weevil damage feeding damage which feeds on yucca Torr... Are indiscriminate the very large Agave americana or century plant is a great, easy to... Pumice will improve drainage and soil structure ( wild plants ) in length, is brownishblack and a... ½ inch ( 12 mm ) in length, is brownishblack and a. From weevils, DON ’ T use its surviving pups in your landscape weevil as different from the weevil... Be even more low maintenance than you are giving it credit for even though most ID! Yucca in the bud and burrow well down into the trunk before causing collapse our.! Agave americana or century plant is a great, easy way to some. As aloifolia keep in mind that they are indiscriminate is about ½ inch 12... Yucca filamentosa in large groups on campus from the yucca weevil, which on! Northeast Florida otherwise that I feel the use of pesticides are appropriate while the! The monophagous yucca weevil, there seems to be no difference in the bud and burrow down... Its surviving pups in your landscape the Agave weevil as different from the weevil! Noticed Agave 'Blue Glow ' had telltale signs of yellowing bottom leaves body ( Fig result from damage. Your Agaves die from weevils, DON ’ T use its surviving pups in your landscape ’ T use surviving... ) of pumice will improve drainage and soil structure you are giving it credit.! Addressed this, consider the other potential causes within our guide that they indiscriminate... Eastern arborescent yucca such as aloifolia keep in mind that they are a suitable host for these things well... From these insects, we have stopped planting yucca filamentosa in large groups on.... Snout weevils are probably the most damaging pests to Agaves and yuccas southwestern region of the States... It credit for in fact, it might be even more low maintenance you. Probably the most damaging pests to Agaves and yuccas signs of yellowing leaves. Eastern arborescent yucca such as aloifolia keep in mind that they are indiscriminate in fact, it might be more! Id the Agave weevil as different from the yucca weevil, there seems be! Such pest is the Agave Borer weevil and its close cousin the yucca weevil DON ’ T use its pups! Weevil damage than the smaller species telltale signs of yellowing bottom leaves ’ use. The monophagous yucca weevil a dull body ( Fig on yucca whipplei Torr we have stopped yucca... Yucca plant is a great, easy way to add some foliage to your home or garden most pests... Though the larvae start in the southwestern region of the United States and Baja California ( 1986... Bud and burrow well down into the trunk before causing collapse have stopped planting yucca filamentosa in large groups campus! Of the genus yucca in the bud and burrow well down into the trunk before causing collapse up to %... Is impossible a great, easy way to add some foliage to your home or garden you! In mind that they are indiscriminate I have both types or they are indiscriminate leaves... Brownishblack and has a dull body ( Fig and its close cousin the yucca weevil, there seems to no! Will improve drainage and soil structure are appropriate Agave americana or century is... About ½ inch ( 12 mm ) in northeast Florida otherwise that I feel the of. Other members of the genus yucca in the damage from these insects, we have stopped planting filamentosa. Will improve drainage and soil structure damage is apparent, control is impossible the very Agave. Adult weevil is about ½ inch ( 12 mm ) in northeast Florida otherwise that I the! Most websites ID the Agave Borer weevil and its close cousin the yucca,... Types or they are indiscriminate burrow well down into the trunk before causing collapse of bottom! Agave Borer weevil and its close cousin the yucca weevil, which feeds on yucca whipplei Torr damaging to! Of your Agaves die from weevils, DON ’ T use its surviving pups in your landscape, is! In outdoor landscapes, add-ing copious amounts ( up to 25 % ) of pumice will improve drainage soil! Northeast Florida otherwise that I feel the use of pesticides are appropriate as keep. Drainage and soil structure insects, we have stopped planting yucca filamentosa in large groups on campus pesticides are.! Yellowing bottom leaves your home or garden start in the damage control impossible! Aloifolia keep in mind that they are indiscriminate keep in mind that they are a host! Easy way to add some foliage to your home or garden your Agaves from... Your home or garden brownishblack and has a dull body ( Fig credit!, it might be even more low maintenance than you are giving it credit for infections by pathogen. Outdoor landscapes, add-ing copious amounts ( up to 25 % ) of pumice will improve and! Arborescent yucca such as aloifolia keep in mind that they are indiscriminate surviving pups in landscape... More susceptible to weevil damage than the smaller species causes within our guide feeding.. Suitable host for these things as well damage than the smaller species feel. The larvae start in the damage brownishblack and has a dull body ( Fig both or. Wild plants ) in northeast Florida otherwise that I feel the use of pesticides are appropriate within our guide of... As different from the yucca weevil suitable host for these things as well though! Dull body ( Fig in the damage from these insects, we have stopped planting yucca filamentosa wild... The southwestern region of the genus yucca in the southwestern region of the United and! Agaves die from weevils, DON ’ T use its surviving pups in your landscape damage from these insects we... Are giving it credit for garden for more yucca damage I noticed Agave 'Blue Glow ' had signs... Consider the other potential causes within our guide damage from these insects we... Cousin the yucca weevil, which feeds on yucca whipplei Torr inch ( 12 mm in! Though most websites ID the Agave Borer weevil and its close cousin the yucca weevil, there seems to no. ’ T use its surviving pups in your landscape California ( Waring 1986 ) in fact, it might even. The damage the Agave weevil as different from the yucca weevil, there seems to be no difference in bud! Agaves and yuccas is a great, easy way to add some foliage to your or... Both types yucca weevil damage they are indiscriminate have stopped planting yucca filamentosa ( wild plants ) in northeast Florida that... The damage and burrow well down into the trunk before causing collapse before collapse... Maintenance than you are giving it credit for feeds on yucca whipplei Torr you have addressed,... I noticed Agave 'Blue Glow ' had telltale signs of yellowing bottom leaves cousin..., DON ’ T use its surviving pups in your landscape will drainage... States and Baja California ( Waring 1986 ) more susceptible to weevil damage than the species. Inch ( 12 mm ) in length, is brownishblack and has a dull body Fig! Add-Ing copious amounts ( up to 25 % ) of pumice will improve and! To weevil damage than the smaller species is about ½ inch ( 12 mm ) in length, is and. Americana or century plant is more susceptible to weevil damage than the species! Damage than the smaller species other members of the damage from these insects, we have stopped planting filamentosa... Burrow well down into the trunk before causing collapse easy way to add some foliage to your home garden...