Because this occurs when cannabis is under stress, it’s important to monitor plants after they have been exposed to stressors: indoors, high temperatures or light leaks are often the cause; outdoors, a snapped branch might be repaired and then turn into a hermaphrodite.
The rare hermaphroditic plant contains both female and male sex organs. These plants can sometimes self-pollinate, but this is typically bad as it will create buds with seeds and also pass on hermaphroditic genes.
Examine the nodes of the plant and look for either the early growth of small sacs on a male, or two bracts on a female, which will eventually produce the hair-like stigma.
Male marijuana plants
Sugar leaves are the small, resin-coated leaves that buds form around. Sugar leaves are usually saved as “trim” during harvest and can be used for pre-rolls, extracts, and other cannabis products.
Males and females are usually only pollinated when crossbreeding plants or creating new strains.
Growers can ensure the sex of their plants by growing clones or the genetically identical clippings from a parent strain. Feminized seeds are also made available through a special breeding process.
The space between nodes is called “internodal spacing” and will give you a sense of whether a plant will grow tall or short.
Feminized seeds are highly desirable to most growers. They’re efficient. It is almost sure-fire that you’re spending your energy and resources raising ladies. However, some growers accept or even prefer regular (unsexed) seeds! We grow a little of both.
Our goal here today is to learn how to tell the difference between male and female cannabis plants early on, so you can get the males away from the females as soon as possible! It will help protect your lady plants – but also spare you the wasted time, resources, and energy of tending to male plants that you don’t intend to keep.
How are feminized cannabis seeds made?
Curious about how feminized seeds are created? In a nutshell: most feminized seeds come from cannabis plants that have been treated and altered in a manner that inhibits male chromosomes. The most common method is to spray the plant repetitively (daily or more) with colloidal silver. Other chemicals and compounds can be used too, but are far less accessible. Colloidal silver is technically “non-toxic”, but you do not want to smoke it! Thus, the plant is sacrificial – used for the production of pollen and seeds only.
Why grow regular cannabis seeds? Well, maybe a particular breeder or strain you want to try only carries regular seeds. Some growers feel that the feminization process is unnatural, and prefer to kick it old school by growing regular seeds only. Some enjoy the gamble and challenge. Whatever the reason, when you grow cannabis from regular seeds, the odds of getting all lady plants are not in your favor. You will end up with some males. Therefore, you need to learn to sex your cannabis plants! Also, we always start several extra “regular” seeds – assuming a 50/50 chance that some will be culled because they are male.
Are you growing cannabis at home, but aren’t sure if your plants are male or female? Then you’ve come to the right place! This article is going to show you how to tell the difference between male and female cannabis plants to properly sex them.
Flowering occurs when the days shorten, or when the plant receives 12 hours or less of continuous daily light. Photo by: Gina Coleman/Weedmaps
In both strains, pre-flowers can be easily mistaken for new branches. If you haven’t used feminized seeds, the pre-flowering period is the time to separate male plants from female plants. Males must be removed immediately to avoid pollinating females unless the intention is to produce seeds. The first male pre-flowers appear as a small sac, while female plants produce a structure called a cola that looks similar to a hair and will later become a flower or bud.
For those who regularly use cannabis for therapeutic or recreational purposes, the notion of cultivating plants for personal use may be appealing. Growing cannabis can be straightforward, but as with most crops, yield and quality can be improved with awareness of the plant’s life cycle and growth requirements. When it comes to growing cannabis, the first decision is to determine whether to cultivate indica or sativa plants.
Indica strains do not undergo the same stem elongation as the plant focuses on developing a thick, woody trunk to support the weight of future buds. Perhaps the most distinguishing characteristic of cannabis indica plants is their leaves. Indica’s unmistakeable fat, forest-green fingers help to soak up light and accelerate growth. Outdoors, indica plants are unlikely to grow taller than six feet (two meters), and indoor plants usually grow three feet (one meter) or less. Indica strains tend to spread out wide like a bush, with vigorous branching.
Flowering occurs when the days shorten, or when the plant receives 12 hours or less of continuous daily light. You can force flowering by reducing the hours of light exposure or photoperiod, signaling to the plant that the nights are becoming longer.
If you’re growing sativa strains from seed, aim for an optimal temperature of 75 F (24 C) to encourage germination within three to seven days. Lower temperatures will delay the emergence of the radicle (the part of the plant that develops into the root).
Sativa strains have light-green, thin-fingered, delicate leaves. Cannabis indica cultivars have broad, dark-green leaves. Photo by: Gina Coleman/Weedmaps