Author Archive | John Foster

Teenage Kicks: How Marijuana Usage — And Abstinence — Alters Adolescent Brains

In a previous article, I discussed the negative effects regular cannabis consumption has on adolescent brains. That particular story generated a decidedly negative reaction from the cannabis community, with people called me an “anti-drug warrior” and a “weed hater.” I shared my own teenage experiences with cannabis use, having consumed almost every day for years, […]

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cannabis sexing

Sex Ed 101: Top Tips For Sexing Your Male & Female Marijuana Plants

Detecting the gender of cannabis is an important part of marijuana growing. Cultivating photoperiod marijuana from non-feminized seeds, you must detect plant gender as soon as possible. Most of us only want to grow female plants, and don’t want males spreading their pollen around. Until they’re detected and consequently removed from your grow op, male […]

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Savvy Seedlings: What Your Baby Cannabis Is Trying To Tell You

Cannabis seedlings are wise little gurus. You can learn a lot from them if you know how to understand the wisdom they’re trying to share. I’m one of those growers who cultivates predominantly from seeds, sometimes germinating three to six different marijuana strains at the same time. Because I’ve studied my seedlings and taken notes […]

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Cannabis Return on Investment

The Color Of Money: Where To Cut Costs And Flash The Cash In Your Cannabis Grow Op

For a long time, certain growers in our cannabis cultivation community have spent as little money as possible on grow supplies, grow rooms, marijuana seeds, and all the things necessary to grow weed. Some of these folks are ingenious, independent-minded DIY enthusiasts. Instead of buying an aeroponics unit, light stand, SCROG screens, hydroponics nutrients or […]

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The white hairs are female structures, the other structures are male. Together, they’re a hermaphrodite marijuana floral cluster. Photographer: © Copyright, John Foster, 2017

Hermaphrodite Marijuana Plants: Prevention, Detection, Management

Yesterday I entered my bloom-phase grow room and was met with a dreaded sight. Dotted before me like rebellious agitators were several hermaphrodite flowers popping up on my cannabis plants, which had been grown from a feminized seed of the same strain. A hermaphrodite flower is one that has both staminate (male) and pistillate (female) […]

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rockwool-grodan

Rockin’ Rockwool: Inert, Horticultural Root-Zone Material For Hydroponics Marijuana Growers

For marijuana growers wanting total control over the nutrient elements and compounds their plants absorb through their root zone, rockwool has long been the reliable choice. Recent breakthroughs in hydroponics nutrients and rockwool technology make it useful to provide an update on the latest innovations in rockwool marijuana growing. Let’s first understand that rockwool is […]

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marijuana growing

Bud Money: Exploring Low-Tech, Low-Cost Marijuana Growing Strategies & Equipment

Northern California fires. Hurricane Irma. Hurricane Harvey. Hurricane Maria. Not to mention all the tropical storms and subsequent floods that hurt many marijuana growers this year alone. Heartbreaking numbers of grow ops were wiped out, and in some worst-case scenarios, growers even lost their homes and loved ones. These catastrophes have led growers to ask […]

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