Victor asked if an insecticide containing pyrethrins and piperonyl butoxide is safe for Nepenthes with fungus gnats, knowing pyrethrins are safe from Jeff's videos.
Jeff Dallas confirmed: most pyrethrin formulations include piperonyl butoxide as a synergist to boost efficacy—it's totally plant-safe.
Alternative: BTI dunks/granules in water—specific to fly/mosquito larvae, harmless to everything else. Used routinely in Sarracenia pools and Nepenthes houses. Keep a watering can with a dunk for easy treatment. Sundews/sticky traps catch adults.
Good Growing!
Jeff Dallas
Sarracenia Northwest
https://www.cobraplant.com
Orchid Fungicides and Insecticides: Consan 20, Cygon 2E, and Homemade Oil Soap
Repotting Nepenthes: When It's Needed and Why Annual Repotting Isn't Mandatory
Charcoal in Nepenthes Mix—Unnecessary and Potentially Harmful
Identifying Nepenthes × ventrata (deRoose's Alata) and Pitcher Maintenance
Choosing and Growing Nepenthes: Sanguinea, Miranda, and Alternatives
Nepenthes Pests: Thrips, Scale, and Red Spot Fungus on ventricosa/sibuyanensis
Insecticide Sprayers: Safety, Coverage, and Choosing the Right Model
Identifying Nepenthes: 'Miranda' and deRoose's 'Alata'
Repotting a New Nepenthes: Acclimate First or Pot Immediately?
To Stake or Not to Stake: Managing Nepenthes Vine Growth
Identifying Common Nepenthes Hybrids: deRoose Varieties and Rebecca Soper
Diagnosing Nepenthes Death from Root Rot: Pebble Tray Misuse
Basal Shoots on Nepenthes: Normal Vining Behavior
Windowsill Nepenthes: Species Recommendations, Media, and Winter Humidity Management
Copyright © www.100flowers.win Botanic Garden All Rights Reserved