All about Cannabis Seeds - What to look for before you buy

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  3. All about Cannabis Seeds - What to look for before you buy
When you want healthy plants and good harvests, starting with quality cannabis seeds is key. They play a big role in your plants' health and yield. For more information on choosing the right canna, visit For more information on choosing the right canna, visit In this article, we will guide you on choosing the best cannabis seeds to jumpstart your grow. The look of cannabis seeds changes, but their colour, size, and texture can tell you a lot. Still, you need to go deeper than just looks. It's vital to consider the seed's genetics, where it comes from, and its ability to germinate.

cannabis seeds

Key Takeaways

  • Quality cannabis seeds are essential for healthy plants and good harvests
  • Proper feeding, watering, and lighting are important, but starting with top-shelf genetics is critical
  • Seed appearance can provide clues about maturity and quality, but genetics, provenance, and germination potential are more important
  • Cannabis seeds come in a range of colours, sizes, and textures, so don't judge solely by physical characteristics
  • Focusing on factors like lineage and viability will help you select the best cannabis seeds for your grow

Understanding the Importance of Quality Cannabis Seeds

Cannabis seeds vary a lot, unlike other crops. Even seeds from the same strain can look different. This doesn't affect their quality. What's most important is where the seed comes from and its genetic makeup.

The Impact of Genetics on Plant Health and Yield

Good seed banks choose and breed cannabis carefully. They focus on making sure the plants will be strong, tasty, and give a good harvest. It's vital for growers to buy seeds from these trusted places to get the best genetics.

Factors Affecting Seed Quality

Seeds' quality is also linked to how they're stored, their age, and how they're handled. These seeds must be stored well to keep them in top condition. This increases the chance of them growing into healthy plants successfully.

Evaluating Seed Appearance and Texture

The way a cannabis seed looks and feels tells you a lot. Things like cannabis seed colour, cannabis seed size, and shape give clues about the seed's health and maturity. By paying attention to these details, growers can spot good, mature seeds easily.

Colour, Size, and Shape Considerations

Mature cannabis seeds are hard and come in different colours. They can be very dark, very light, or have stripes like a tiger. These hard seeds should not crush when you press them with your fingers. In comparison, green seeds with a soft cover are usually not ready yet.

Identifying Mature vs. Immature Seeds

Looking at a seed's appearance can hint at how mature it is. However, this doesn't always show the seed's quality or what it can grow into. Growers should be careful not to judge seeds only by how they look.

Appearance of F1 Hybrid Cannabis Seeds

F1 hybrid cannabis seeds might look a bit different. They can seem smaller, slightly opened, or even cracked. Yet, these unique seeds often grow very well and show strong germination rates.

Debunking the Myth of Seed Sex Identification

Many think you can tell a cannabis seed's sex by looking at it. They say certain features, like a "volcano-like depression," mean it's a female seed. But, these ideas are not true. There is no real 'trick' to know the sex just by how it looks.

The best way to know a cannabis plant’s sex is by seeing its flowers when they bloom. Don't throw away seeds believing these false ideas. This way, you won't lose out on great seeds.

It's important to wait until the plant is older to see its real sex. Trying to guess before this time is a waste. You might remove good plants by mistake. Instead, put your focus on getting good seeds from trusted sellers. Also, make sure your plants have the best environment to grow in.

Sourcing Seeds: Reputable Seed Banks vs. Bagseed

Finding cannabis seeds in a bag of cannabis might mean the growing process didn’t go as planned. This shows the female plants likely got pollinated. If you grow seeds from a bag, there's a risk. You don't know the plant's true genetics or if it's male or female. This is where buying from a trusted seed bank comes in. You know you’re getting high-quality seeds with a known background.

Benefits of Purchasing from Reputable Seed Banks

Seed banks put a lot of effort into breeding the best strains. This means you get more consistent and reliable seeds. Even though some hobbyists create good strains, it's safer to buy from a seed bank. They guarantee quality and variety by investing heavily in their products.

Risks of Growing Bagseed

Growing bagseed is risky because you can't be sure of its origin or gender. You might end up with plants unsuitable for producing cannabis. Also, these plants might not be very strong or they may not taste good. By choosing seeds from a quality seed bank, you reduce these risks. You start with known genetics, ensuring a better chance of success.

Testing Methods for Seed Viability

Testing your cannabis seeds to see if they're viable is key for a successful harvest. One way to do this is the float test. Put the seeds in water. See which ones sink. Seeds that float probably won't grow. The ones that sink show promise.

The Float Test

The float test is a simple check for your cannabis seeds' health. It's done by putting them in water. Sinking seeds are likely good to plant. They've taken in enough water and are strong. Seeds that stay on the surface are probably not right for planting.

Germinating All Seeds Regardless

The float test might not always give you the full picture. Some great seeds might still float for a while. In other cases, growers plant every seed to see what will grow. It's a way to make sure nothing valuable is thrown away. Yet, planting all seeds takes more effort and time, especially for big operations.

cannabis seeds: Choosing the Right Type

Choosing cannabis seeds is a big decision. There are regular cannabis seeds, which give a mix of male and female plants. This means you have to watch out for and remove the male plants. On the other hand, feminised seeds are specially bred to only grow female plants. This makes things easier for growers.

Regular vs. Feminised Seeds

Regular seeds have a pure, untouched genetic makeup. But, dealing with the occasional male plant can be hard work. Feminised seeds, however, save you this effort by guaranteeing only female plants. This makes them a favourite for growers at all skill levels.

Autoflowering Seeds

Then there are autoflowering seeds. These seeds start flowering by themselves, not needing a special light cycle. This is great for those with small growing spaces or who want a quick harvest.

Sativa, Indica, and Hybrid Strains

It's also important to think about the seeds' strain type. Sativa strains give a happy, energetic high. Indica strains offer a chill, sleepy vibe. And hybrids mix these feelings, offering a bit of everything.

THC vs. CBD Content

The THC and CBD levels in seeds matter a lot. Strains with lots of THC give a powerful high. Strains high in CBD are more calming and can have health benefits. It's key for growers to know what kind of high they want when picking seeds.

cannabis seed types


Choosing top-notch cannabis seeds is key to a prosperous garden. By knowing their genetics, and checking their look and origin, you lay the groundwork for a great harvest. Bear in mind, seed appearance can hint at quality, but the best indications come from the seed's background and how mature and viable it is. It's smart to buy your cannabis seeds from respected seed banks to be sure you're getting the best.

Adhering to the best seed selection and growing methods boosts the probability of lively, high-yield plants. Whether it's marijuana seeds, weed seeds, or hemp seeds, understanding cannabis cultivation and cannabis genetics is crucial for the best outcomes.

At last, the process of cultivating cannabis starts with picking top-grade cannabis seeds. By keeping up with what you know and making wise picks, growers can make the most of their harvests. This leads to a rewarding journey in cultivation.


What are the key factors that influence the quality and potential of cannabis seeds?

The seed's genetic background, where it comes from, and if it's still viable are top factors. The seed's genetics and a trusted source matter more than its looks. These show the seed's quality better.

How can I identify mature, high-quality cannabis seeds?

A good cannabis seed will be hard and might look grey or have stripes. It should feel strong when you squeeze it. Seeds that are soft and green are not fully grown.

Is it possible to determine the sex of a cannabis seed just by looking at it?

No. You can't tell if a cannabis seed is male or female by its looks. Any ideas about 'female' features are not true. Gender appears when the plant starts flowering.

What are the benefits of purchasing cannabis seeds from a reputable seed bank compared to using "bagseed"?

Seed banks offer known, high-quality strains with consistent genes. They breed seeds carefully for reliability. Using unknown seeds from cannabis you've bought is risky. You won't know the strain's quality or its sex.

How can I test the viability of cannabis seeds?

The float test is one way. Put seeds in water. If they sink, they might be viable. But, some good seeds can float too, so it's not perfect. A sure way is to try and grow them. That will really show if they're viable.

What are the different types of cannabis seeds, and how do they differ in terms of growing characteristics and effects?

You can choose from regular, feminised, and auto-flowering seeds. Each has different growing and effect characteristics. The plant's genetics, whether it's sativa, indica, or a mix, and the THC to CBD ratio, affect how it grows and what it does.

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Ed Smith
Ed Smith

With a deep passion for cannabis culture and its potential benefits, Ed has dedicated his career to educating and advocating for cannabis reform in the UK. His insightful blog posts and articles offer a blend of in-depth knowledge, personal experiences, and the latest developments in the cannabis industry. As an activist, Ed is committed to challenging misconceptions and pushing for legislative change. His tireless efforts have made him a respected voice in the cannabis community, both in the UK and beyond.