Snout weevils are beetles about ½ inch (12 mm) in … A close relative of the agave weevil attacks yucca as well as agave plants. In outdoor landscapes, add-ing copious amounts (up to 25%) of pumice will improve drainage and soil structure. 4) Weevils. Control of Root Weevils on Plants. 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. IV-Field trials with insecticides in bulbil nurseries. The control of the sisal weevil (Scyphophorus interstitialis Gyll. Plant bugs ( Caulotops and other species) are small insects that occasionally build up in large numbers and damage agave plants by feeding on leaves, resulting in light yellow scars or spots. Agave Snout Weevil (Scyphophorus acupunctatus) ... and yucca successfully in heavy clay soils. The control of the sisal weevil … Weevils. The leaves begin to turn yellow and die, and a putrid smell emanates from the infected trunk. These are best applied on the lower trunk of the plants and around the base of the plant to kill the weevils as they climb. Eventually, the plant falls over and dies. This insect bores in and opens the trunk to bacterial infection. Curculionidae, Coleoptera) in sisal in Tanzania. The Yucca Weevil (Scyphophorus acupunctatus) mainly attacks the cane of the yucca plant. 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 Yucca weevils can only be controlled by keeping the plant in its optimal conditions of dry soil, full sun and good air flow. ... beetles, weevils, leafhoppers, worms and moths. The agave snout weevil is also a serious pest where blue agave is grown commercially for tequila and in foreign countries where agaves have been introduced as landscape plants. Hopkinson D; Materu MEA, 1970c. Adult root weevils can be controlled with sprays of several kinds of pyrethroid insecticides such as permethrin, bifenthrin, cyfluthrin, or cyhalothrin. A similar species also colonizes yuccas. Control of agave snout weevil is difficult, and infestations can be prevented by maintaining healthy plants and destroying infested plants. The product may be … Symptoms - Damage by the `Yucca Weevil', Scyphophrus acupunctatus, is most extensive in the cane. The recommended treatment is to remove any yuccas that are infected. Control mealybugs by treating the plant with insecticidal soap. Sandy soils should be avoided because they will drain very However, we do offer a spray product called BioAdvanced 3 in 1 Insect Disease & Mite Control that will control any type of weevil. Control - Many materials are registered and effective at controlling thrips. Control of insect pests in crop plants and stored food grains using plant saponins: A review. If you feel the need to control them, you can use the same recommendations as for controlling mealy bugs. In a healthy plant, thrips won't do too much damage. Mary and Gary Irish had a good suggestion in their outstanding book, Agave, Yuccas and Related Plants: A Gardeners Guide (2000, Timber Press). BioAdvanced Tree & Shrub Protect & Feed is unfortunately not formulated to control Yucca and/or Agave weevils. If one of your Agaves die from weevils, DON’T use its surviving pups in your landscape. East Africa Agricultural and Forestry Journal, 35(3):278-285. Thrips are tiny, skinny insects that feed on yucca leaves, causing them to curl.