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determine weed seed viability

A quick web search will bring up all kinds of myths about how to tell female cannabis seeds from males. One of the most popular ones comes from a chart showing 5 different seeds that claims that the female seeds have “a perfectly round volcano-like depression at the bottom (from where the seed was attached to the plant).”

A solid way to obtain great seeds is to find a reputable seed bank. These companies pride themselves of their breeding skills and make sure that their customers receive exactly what has been advertised. They have reputations to cater to, so delivering anything less would only harm their image.

The alternative to this is to risk buying seeds from a hobbyist. This isn’t to say that hobby growers cannot produce fantastic genetics, but if you don’t know them or their skills, there’s no way to know whether your seeds will grow.

Germinating All Your Seeds Regardless

Quality seeds are the key to healthy plants and good harvests. While proper feeding/watering and good light quality obviously also affect the health and yield potential of your plants, starting a grow with top-shelf genetics is equally, if not more important. But how exactly do you tell quality cannabis seeds apart from the rest? In this article, we’ll show you exactly how to spot top-quality cannabis seeds, avoid duds, and start your grow off right.

The color and feel of a seed, on the other hand, can tell you a little more about its maturity and, potential to germinate or grow into a healthy seedling.

If you are still unsure about the quality of your seeds after analysing their appearance and toughness, it’s time to put your lab coat and goggles on. Well, not quite. This test is extremely easy and only has two possible outcomes. Fill up a drinking glass or glass jar with water (preferably spring or distilled) and place your seeds on the surface.

With this said, you may get lucky if the strain they were growing really is prime. In this case, it’s worth carrying out the following test to see if it’s worth germinating.

Seeds found in buds obtained from your local dealer are likely of much lower quality. In general, finding seeds in flowers reflects poor growing practices. On top of this, you likely have no idea how old these buds really are. Stick to seed banks known for top-shelf genetics. Check out their reviews, and see how much data they disclose regarding each strain to confirm you’re in good hands.

Any seed that falls within this color range shows promise. Changes of color within this spectrum occur primarily due to genetic factors, but environmental variables also play a role. Some seeds take on a darker tone after being packaged for several months. Humidity, lighting, and oxidation also lead to a slight shift in appearance.

The beginning of an epic cannabis journey

Learn how to identify quality marijuana seeds in order to start your cannabis grow in the best way possible.

Marijuana seeds start to become questionable when they present a green coloration. Green hues are a sign that the grower harvested their seeds too early. This vegetative look means the seeds didn’t get the time they require to develop properly, placing them at a higher risk of not germinating.

Healthy and viable cannabis seeds feature a brown color that varies from a light shade to a much darker one. Some seeds are more uniform in color, whereas others feature multiple shades and tiger stripe or turtle shell patterns.

Simply use the sensation of touch. Place the seed between your thumb and index finger and give it a squeeze. Young and healthy seeds will feel firm, and won’t give in to the pressure. Older seeds may feel slightly squidgy, and old and dry seeds may even crumble or crack—they lack the moisture and nutrient content of younger specimens.

When asking yourself the question of how to tell if a weed seed is good, you need to consider where it came from. There remains a huge discrepancy between the quality of cannabis seeds from a reputable seed bank versus those found in the bottom of a mediocre bag of weed.

The thickness of paper used should be more than 2 mm when moist.The water used must be reasonably free from acid, alkali, organic material or other impurities. It can be either tap, distilled or de-ionized water.

2. If there is no standard, ask the curator for advice on the best germination test conditions to use.

Notes and Examples

Notes and Examples

1. Place the prepared germination tests under the light and temperature conditions which were determined in Step 1.