Feminized Cannabis Seeds

Our most popular feminized strains compared

All figures come from our own breeding programme and the strain data sheets. Yields are for indoor growing under a 720 W LED on 1.5 m²; outdoor harvest times are for the northern hemisphere.

Which feminized strain suits you?

How are cannabis seeds feminized — and why is it worth it?

Feminized seeds — also called female cannabis seeds — are bred so that they grow into practically only female plants. That is crucial, because only female cannabis plants form the resinous flowers that are harvested. Male plants produce pollen that pollinates the females and fills the harvest with seeds. With feminized seeds there are no males to remove: every seed counts, space is used to the full and the harvest stays safe. If you still want to know what a male looks like — for example to spot hermaphrodites — everything is in our guide male vs female cannabis plants.

How are feminized seeds made?

Feminized seeds are created without male plants: in a selected female mother plant, a controlled stimulus triggers the formation of pollen. This pollen carries only female genetic information — pollinate another female plant with it and practically all the offspring are female. What matters most is the choice of stable mother plants: at Pyramid Seeds every line is tested over generations for uniformity and stability before it enters the catalogue.

Feminized vs regular vs autoflowering seeds

Don’t want to manage light cycles? Have a look at our autoflowering seeds. Want to breed your own? Then regular cannabis seeds are the right choice. And if you want to harvest sooner, you will find feminized fast flowering seeds with a shorter flowering time.

Feminized seeds for outdoor growing: UK, Europe, USA and Canada

Feminized strains start flowering as soon as the days get shorter — in the northern hemisphere from around early August. The key to outdoor success is a plant that ripens before the autumn rain and the first cold nights. How long you can wait depends on where you grow.

Short seasons: UK, northern Europe, Canada and the northern US

In the UK, Ireland, the Netherlands, Germany and Scandinavia — as well as in most of Canada and in northern US states such as the Pacific Northwest, the Upper Midwest and New England — autumn arrives early and wet. Choose early-finishing strains:

• Early September: Northern Lights, Super OG Kush
• 1st–2nd week of September: Wembley, Kryptonite, Anesthesia
• Mid to late September: Tutankhamon, White Widow

In damp climates, mould resistance matters as much as timing: Black Cherry Punch is mould-resistant and finishes in September — a strong choice for rainy autumns.

Long seasons: southern Europe, California and the southern US

Where summers are long and autumns stay dry and sunny — the Mediterranean, California, the US South and Southwest — even late, high-yielding strains finish outdoors. Here you can grow sativas such as Amnesia Gold (2nd–3rd week of October) and let big producers like Tutankhamon and Black Cherry Punch reach their full size.

Late strains such as Amnesia Gold are better grown indoors or in a greenhouse in short-season climates. If you want to play it completely safe, choose autoflowering seeds — they flower regardless of day length.

From the breeder, not a reseller

Pyramid Seeds is a seed producer based in Barcelona, founded in 2002. We don’t buy in other companies’ seeds to repackage them — every feminized strain in this catalogue comes from our own breeding programme and was tested over generations for germination, uniformity and yield before it went on sale.

• Our own genetics since 2002 — selection and stabilisation in our own programme
• Tested potency — Tutankhamon: 33% THC in an Energy Control lab test at Spannabis 2011, and 30% in a customer’s home-grown bud at Mary Jane Berlin 2024
• Fresh seeds from the current harvest — straight from the producer, no middlemen
• Germination guarantee and bonus seeds in every order
• Discreet shipping across Europe, to the US and Canada and worldwide — neutral packaging, dispatched within 24 hours of payment. Rates and free-shipping thresholds for your country: delivery information

More about us: Pyramid Seeds — cannabis seed bank from Barcelona since 2002.

Updated: October 2026 · Strain data from the Pyramid Seeds breeding programme

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