However, if your agave is about to bloom, it’s best to forgo treatment as it could affect pollinators that are attracted to the blossoms. The foliage will pull easily out of the crown and the center of the rosette is mushy and foul smelling. When you water, the chemical will slowly release down to the roots of the plant and then into the vascular tissue, protecting it from the pest. A population of agave snout weevils can decimate the agave crop and then what will we put in margaritas? When the larvae hatch, they spread bacteria and do physical damage as they chew further into the core of the plant. The indoor agave gardener may have to look a little harder for products that will work against the weevils. By: Bonnie L. Grant, Certified Urban Agriculturist. Agaves Under Attack in Austin", http://tropicaltexana.blogspot.com/p/agave-weevil-eradication.html, Succulent Color Wheel Rainbow Centerpiece →, Tina Cremer, H2 Xero Landscape Design & Maintenance, https://debraleebaldwin.com/agave-photos-labeled-identified/, https://drive.google.com/file/d/1ILx-d4m5Fur2WtV3XqEUej6suGmUfirJ/view?usp=sharing, https://debraleebaldwin.com/succulent-experts/agave-snout-weevil-prevention-treatment/, https://www.youtube.com/watch?v=uxY5213CP30&t=1s. Smith G F, Figueiredo E, Klopper R R, Crouch N R, Janion C, Chown S L, 2012. Triazanon is available at most nursery and garden centers. If you discover that one agave in your landscape has symptoms of agave snout weevil and the plant is beyond treatment, you should remove the plant as soon as possible to … Three agave plants near my house that are currently infested with Weevils. One day it will look fine, the next day the plant is wilted and the stiff rapier sharp leaves are flat to the ground. LIFE CYCLE: In the low desert adult agave weevils become active in the spring and can The very large Agave americana or century plant is more susceptible to weevil damage than the smaller species. This is due to the bloom habit of the plant. From Garden Bits, photos by Valerie, on the 4th site listed in Member Notes. Agave snout weevil treatment with sprays is tricky because the insect is protected by the thick leaves. Triazanon is available at most nursery and garden centers. Infested plants will show leaf wilt, followed by total collapse of the plant. Larvae are similar to white grubs without legs. Use this forum to help with identification issues and treatment for a variety of common afflictions pertinent to our favorite horticultural charges. I’m sorry to hear it, Linda, but not surprised. About Agave Snout Weevils. 1. These are slow-moving pests that thankfully cannot fly. There is some evidence that this plant is resistant to the Agave Snout Weevil, Scyphophorus acupunctatus. According to agave experts, growers, and pest management specialists, the best approach is preemptive: drench the soil around healthy agaves with a systemic insecticide that has. I'm seeing more of the variegated forms in … Agaves naturally funnel rainwater water to their roots, so if you slosh the solution where lowest leaves meet the core, you'll effectively drench the soil below them at the base of the plant. This pesky, stealthy insect loves specimen agaves like the Weber’s agave, along with the century plant, or Agave americana. 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. Tom Gatz March 2001. 3. Bird Puzzle Feeder: A New Way to Enjoy Your Garden, How to Deal with Mealy Bugs on Succulents, Brody’s Lovely, Low-Cost Succulent Garden, one of the "Top 100 Worst Global Invasive Species. This cousin of the boll weevil loves this species of agave the most. long. I could barely believe it. Yucca was declining for awhile. Damage occurs quickly, followed by death because the bite of the weevil deposits bacteria that literally rot the agave. Once an agave has bloomed, it is at the end of its life cycle and these plants are especially prone to agave snout weevil infestations. For special varieties, plant agaves in containers and also look for other succulents such as larger stapelias, euphorbia species and aeoniums. Sucessfully Treating the Agave Snout Weevil. Photo: Courtesy photo 2 of 5 Agave snout weevil crawling out of a damaged agave… The weevil seems less inclined toward those with thin, flexible leaves, such as Agave attenuata; those with tough, hard-to-pierce leaves (such as agaves desmetiana, murpheyi, parryi, lophantha ‘Quadricolor’, ‘Sharkskin’, triangularis, victoriae-reginae and vilmoriniana); and those with slender, nonjuicy leaves such as agaves bracteosa, filifera and geminiflora. With rare or special specimens, chemical prevention using a broad-spectrum insecticide applied to the soil at the base of the agave plants in spring would also be effective in controlling agave snout weevil populations. It seems to stay away from agaves with soft leaves, such as Agave attenuata ; those with tough, hard-to-pierce leaves (such as agaves ‘Sharkskin’ and v ictoriae-reginae ); and those with slender, nonjuicy leaves such as A. bracteosa and A. filifera . Another way to prevent or control agave weevil attacks is to plant agaves the weevils find “not attractive.” Horticulturists are working hard to develop specific snout weevil resistant cultivars. The snout weevil seems to prefer Agave americana (especially older ones and variegates), but will go after other Agave species. Succulent and southern gardeners will recognize the damage of the agave snout weevil. This makes it easier for the larvae and parent to eat the tissues, but it will eventually cause the collapse of even the most mighty of agave. It then lays its eggs in the rotting tissue and, when hatched, the agave snout weevil larvae feed on the rotting crown and roots. They do not have wings. Snout weevil damage is extensive and soon leads to death of the plant. My wife found this one … Plant Agave Cultivars Unattractive To Snout Weevils. There is some evidence that species like Agave angustifolia – with its exceptionally hard outside skin – are less susceptible to snout nose weevil. Although snout-nosed weevils can’t fly (yes, there are such things as flightless beetles), they sure can walk. She lives atop a rocky hill surrounded by acres and acres of chaparral. In the video you can see one of the Weevil larvae. As a general rule snout beetles seem less attracted to agaves like the Agave Attenuata species with: Snout weevils prefer the wide-blade forms of agave such as Agave Americana in both the blue form and the variegated forms. These types of agaves (including A. sisal , which is grown for its fiber to make rope) contain very little succulent tissue, making them less attractive to weevils. I first suspected that agave snout-nosed weevil had arrived in my rural community north of San Diego when I noticed a collapsed Agave americana in a friend’s yard. Not treating you take a risk of infestation, which may or may not happen this year or even next year. Agaves in cultivation enjoy good drainage and regular water when the soil is going dry, but not much sooner. Snout weevil control is essential in southwestern areas, especially where agave is grown to make tequila. Apply the granular form and dig it into the soil around the agave. Apply the granular form and dig it into the soil around the agave. Sign up for our newsletter. Sign up to get all the latest gardening tips! 2. It is hardy to ten degrees Fahrenheit. To mix the solution, I use a hose, a 3-to-5 gallon bucket, and a stick for stirring. Bradleya. Most Agaves are usually not hit by serious pests or diseases. Be sure to wear gloves and protect your skin and eyes. Being an Agave, you’ll highly likely have to deal with Agave snout weevils, also known as sisal weevils, which lay eggs on the base of the plant during spring, causing the infestation to escalate. I’m trying to make a website with some general info. Agaves approaching maturity, or those with a wide, blue-green leaf seem to be the most susceptible to damage by the snout nosed weevil. The agave snout weevil (Scyphophorus acupunctatus) adult measures about 1/2-inch long, has a dull brownish-black body and a characteristic long snout. 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