How to Choose the Right Cannabis Seeds: Full Buyer’s Guide.
Choosing the right cannabis seeds is one of the most important decisions you’ll make as a grower. Whether you're a complete beginner or a seasoned cultivator, the genetics you pick will have a huge impact on your grow’s success, your yield, your flavour, and your enjoyment.
At Discount Cannabis Seeds, we understand how daunting the seed-buying process can be. That's why this guide is designed to walk you through everything you need to know — from different seed types to terpene profiles, and from strain selection to buying reliability. By the time you're done reading, you'll feel confident in selecting the perfect seeds for your setup and goals.
1. Understanding the Different Types of Cannabis Seeds.
When you're starting out, one of the first choices you need to make is which type of seed to grow. There are several categories, each with its own advantages and trade-offs:
Regular seeds are the "natural" form of cannabis genetics. These seeds have a roughly 50/50 chance of producing male or female plants, just like in nature.
“Regular cannabis seeds have a 50% chance of emerging as either males or females … they are popular among breeders.”
Pros of regular seeds:
- Ideal for breeding. If you want to create your own strains, you need male plants to produce pollen.
Royal Queen Seeds - You can select the best phenotypes for future grows.
- Produces vigorous clones for cutting (if you want to take cuttings later).
Cons:
- You may end up with male plants, which are usually culled unless you are breeding.
- Requires more grow space or effort to remove males.
- Regular seeds are not typically for those who simply want a straightforward, bud-producing grow — unless breeding is your goal.
Feminised seeds are bred to produce almost exclusively female plants. This is done by forcing a female plant to produce pollen (via techniques like colloidal silver), which is then used to pollinate another female. The result: seeds that are female 99% of the time.
Pros:
- No need to worry about male plants — you’re nearly guaranteed a harvest of buds.
- Saves space, time, and effort.
- Most growers who want flower production prefer feminised seeds.
Cons:
- Not ideal for breeders (because you have very few, if any, males).
- In rare cases and under stress, some feminised seeds can hermaphrodite.
- Usually you can’t clone from feminised seeds in the same way as regular seeds — though modern techniques sometimes allow it.
Autoflowering seeds are a major innovation in cannabis breeding. These seeds contain genetics from Cannabis ruderalis, a subspecies that automatically triggers flowering based on age rather than light cycle.
Pros:
- Rapid growth: many autos can go from seed to harvest in as little as 8–10 weeks.
- Compact size: ideal for small grow rooms, tents, or discreet growing.
- Simple lighting: you don’t need to change to a 12/12 light schedule — you can run 18/6 or even 24/0.
- Hardy genetics: they tend to be more resilient, thanks to ruderalis heritage.
Cons:
- Typically lower yield compared to photoperiod strains (though this is improving with breeding).
- Shorter vegetative phase: less time to train or top for structure.
- Less ideal for cloning: because of the auto trait, cloned autoflowers may not perform as expected.
If you’re interested in therapeutic or balanced effects, CBD-dominant or low-THC seeds are a fantastic choice. These are often feminised or regular, depending on the breeder.
While this guide mainly covers THC-dominant cannabis, it's worth noting that many reputable seed banks — including ours at Discount Cannabis Seeds — offer a wide selection of CBD genetics for those prioritising wellness or mellow effects.
2. Key Factors to Consider When Buying Seeds.
Once you’ve picked a seed type (regular, feminised, auto flower), you need to think about other critical factors that will affect your grow’s outcome:
- Breeder Reputation & Genetics Quality
- Terpene Profile, Flavour & Effects
- Growing Environment & Experience Level
- Flowering Time, Yield & Plant Size
- Storage & Seed Viability
Let’s explore each.
2.1 Breeder Reputation & Genetics Quality.
The breeder or seed bank you buy from matters enormously. Genetics are not just about names — they determine the stability, performance, and consistency of your plants. As one noobs’ guide puts it:
“Genetics are the most important thing you should consider when growing weed … better genetics … is already on a good path to success.”
When choosing where to purchase, consider:
- Whether the breeder is well-known and trusted
- How long they’ve been in the business
- Their strain catalogue
- Seed reviews and grower feedback
- Whether the seed bank tests or verifies genetics
At Discount Cannabis Seeds, we source from world-renowned breeders and provide genuine, high-quality seeds — ensuring that you receive stable genetics and consistent performance.
2.2 Terpene Profile, Flavour & Effects.
Terpenes are the aromatic compounds in plants that give each strain its distinct smell and taste. They also help influence how a strain makes you feel.
Some common terpenes include:
- Myrcene — berry, musky, relaxing
- Limonene — citrusy, uplifting
- Caryophyllene — spicy, peppery, stress-relieving
- Pinene — pine-like, alertness
When selecting seeds:
- Think about the flavour you’ll enjoy. Do you like tropical fruit characteristics, skunky gas, or something sweet and creamy?
- Consider the desired effect: uplifting and social, calm and chill, or balanced?
- Use strain descriptions and terpene breakdowns (when available) to guide your choice. Stockists like us provide detailed strain profiles to help.
2.3 Growing Environment & Experience Level.
Your growing environment and how much experience you have should heavily influence your seed choice. ILGM advises growers to choose plants based on space and experience.
Questions to ask yourself:
- Am I growing indoors or outdoors?
- How much height clearance do I have?
- How stable is my climate (temperature, humidity)?
- What lighting setup do I use (LED, HPS, natural)?
- How experienced am I with training or plant care?
If you’re a beginner, auto flowers or feminised photoperiod strains are often the best bet. Many on grow-forums recommend feminised autos for their simplicity and reliability. > “the best bet is to go for feminised autos … because no matter what they will always be female.”
2.4 Flowering Time, Yield & Plant Size.
The flowering time, expected yield, and finished plant size are critical metrics when selecting seeds. These directly impact how long your grow takes, how much space you need, and what kind of harvest you can realistically expect.
Flowering time: Autoflowers often finish faster (e.g., 8–10 weeks)
; photoperiod plants may take longer but may yield more.
Yield: Greater yield often comes with longer flowering or larger plants—but compact autos or well-trained photoperiods can still deliver.
Plant size: If space is limited, shorter or more compact strains (especially autos) are ideal; tall sativa-dominant photoperiods may need more vertical room.
Good seeds should look healthy: dark shells, a mottled or marbled appearance, and a slight sheen. These traits suggest maturity and viability.
Tips for storing seeds:
- Keep them in a cool, dry, dark place (e.g., a fridge is common, though not too humid)
- Use airtight containers
- Use desiccants if humidity is an issue
- Avoid extreme fluctuations in temperature — it reduces viability
3. How to Choose Seeds Based on Your Goals.
Your purpose for growing will heavily influence your choice of seeds. Here are a few common goals — and what to prioritise in each case.
3.1 For Quick Turnaround (Fast Harvests).
If you’re chasing speed:
- Choose auto flowering seeds. They are naturally fast because they flower based on age, not light cycle.
- Look for autos that finish in 8–10 weeks. Search for compact, quick phenos.
- Use a simple light schedule (18/6 or constant light) to maximise growth and reduce stress.
If yield is your priority:
- Consider photoperiod feminised seeds. With enough veg time and good training, these plants commonly produce larger yields.
- Pay attention to breeders’ yield estimates and grower reviews.
- Choose genetics known for productivity or "cash-crop" potential.
If you're growing for taste or experience:
- Study terpene profiles from strain descriptions.
- Select based on effect: e.g., Limonene-rich strains for uplifting buzz, Myrcene for relaxing body feel.
- Consider hybrid strains for a mix of desired effects (e.g., a balanced hybrid, or indica-dominant for chill evenings).
If you're new to this:
- Go for auto flowering feminised seeds — they’re easier, faster, and require less light management.
- Stick with reputable breeders and stores (like us) so your genetics are reliable.
- Avoid highly experimental or rare phenotypes until you're more confident.
If you plan to breed:
- Use regular seeds to get both sexes.
- Prioritise stable genetic lines from respected breeders.
- Be prepared for space and time: breeding requires more patience and resources.
4. Common Mistakes When Buying Seeds (and How to Avoid Them).
Even experienced growers make errors. Here are the most common pitfalls — and how to sidestep them.
Buying from an Untrustworthy Source
Avoid sketchy or unverified seed banks. Always check reviews, reputation, and breeder legitimacy.
At Discount Cannabis Seeds, we guarantee genetics from honest, verified breeders.
Choosing Seeds Based on Trend, Not Suitability.
Don’t pick a strain just because it’s “trending” if it doesn’t match your grow environment or experience.
Use your space and goals as a guide. The best strain is the one that suits you, not what’s most hyped.
Ignoring the Light Cycle Requirements.
Photoperiod seeds need a switch to 12/12 light for flowering; if you don’t plan for that, get autos.
Auto flower seeds will bloom regardless, making them more flexible.
Accept only seeds that look healthy (mottled shell, not too pale or shrivelled).
Store them correctly to preserve germination rates.
Underestimating the Importance of Terpenes.
Strains with funky flavours often come with unique terpene profiles. Not liking the effects? It might be the terpene mix, not genetics quality.
Everyone wants big yields, but if you don’t have space or light, a high-yield photoperiod plant may be more trouble than it’s worth.
5. Real Reviews: Grower Experiences from Around the UK.
Here are some realistic, experience-based reviews of different kinds of seeds. These are hypothetical but representative of genuine grower voices.
Review 1: Auto flower Success
Emily, Bristol
“I started growing with Autos because I’d heard they were beginner-friendly. I went for a well-rated strain, and in less than 10 weeks I had bud! The plants were small but dense — perfect for my 2×2 tent. Discount Cannabis Seeds made everything easy: delivery was quick, and the seed quality was spot on.”
Review 2: Feminised Photoperiod for Yield
Oliver, Leeds
“I wanted a big harvest. I chose a feminised photoperiod strain with decent flowering time, plus trained the plants. After 12 weeks of bloom, I pulled a solid crop. The genetics I got were stable, and there were no weird hermaphrodites. Shopping through Discount Cannabis Seeds gave me peace of mind — good selection and reliable service.”
Review 3: Terpene-Focused Grow
Sophie, Manchester
“Flavour is everything for me. I picked a citrus-heavy, limonene-rich strain and got exactly what I hoped for: zesty aroma, uplifting buzz. It matched what Discount Cannabis Seeds said in their strain profile. Germination, growth and final flavour were all on point.”
Review 4: Storage and Viability
Jack, Cardiff
“I stored my seeds in a cool, dark place and used them a few months later — still hit 95% germination. The seeds were clearly of high quality: solid colour, healthy markings. That kind of reliability makes me
All seeds sold by Discount Cannabis Seeds are for collectible / souvenir purposes only. Germination is illegal in the UK without a Home Office license.