S
StudenTeacher
I'm going to poison the roots of a small plant with bifenthrin late into flower this time and get it lab tested to see if any gets absorbed into the plant. It is non systemic so it would make since that none will make it into the plant, but I'm no botanist, just a grower, so obviously I don't have an answer. Synthetic pyrethroids are significantly less expensive than pyrethrin. I haven't had aphids for a couple years and got rid of mine using spectracide/bug bgone and orthene. After using the orthene in veg and beginning 12/12, I didn't want to continue it's use at the onset of flower so I continued using the pyrethroids every 3-4 days until day 30 into 12/12. Water heavily with the poison and let it soak for two hours then rinse it all out really good with water, then half strength food for one day, then back to normal for a few days and repeat.
Also it will help greatly to add 1/4 teaspoon of bleach to every five gallons of water/nutrient mix. This will get your plants happy muuuch faster. I got my aphids from progressive options in LA so they were already immune to imid. I used merit 75 for almost two years just to keep em at bay. I think after 2 orhene applications and roughly ten pyrethroid applications I had killed them. Whayever is applied it needs to be twice a week unless you're prayers work better than mine The following round I started using kontos on clones so I can't say 100% what got rid of them but they are gone and have been for a long time.
Also it will help greatly to add 1/4 teaspoon of bleach to every five gallons of water/nutrient mix. This will get your plants happy muuuch faster. I got my aphids from progressive options in LA so they were already immune to imid. I used merit 75 for almost two years just to keep em at bay. I think after 2 orhene applications and roughly ten pyrethroid applications I had killed them. Whayever is applied it needs to be twice a week unless you're prayers work better than mine The following round I started using kontos on clones so I can't say 100% what got rid of them but they are gone and have been for a long time.