501st OG Feminized vs Ace of Spades Autoflower — Side-by-Side Comparison
Choosing between 501st OG Feminized and Ace of Spades Autoflower? Both are heavyweights in the modern cannabis catalog, but they pull in different directions on potency, growth rhythm, and end-user experience. This side-by-side breaks down the genetics, growing data, and effects so you can pick the right packet of seeds for your tent or garden.
501st OG Feminized vs Ace of Spades Autoflower at a glance
| Spec | 501st OG Feminized | Ace of Spades Autoflower |
|---|---|---|
| THC | 18% | 20%winner |
| Strain split | 74% Indica / 26% Sativa | 66% Indica / 34% Sativa |
| Flowering time | — | 8-10 weekswinner |
| Indoor yield | — | 350-500g/m² |
| Outdoor yield | — | 50-200g/plant |
| Plant height | — | 60-100cm |
| Difficulty | Intermediate | Easywinner |
| Autoflower | No | Yes |
| Feminized | Yes | Yes |
Effects compared
501st OG Feminized delivers
Both share
Ace of Spades Autoflower delivers
501st OG Feminized and Ace of Spades Autoflower both bring relaxed, sleepy, happy to the experience, but 501st OG Feminized leans more into relaxed territory while Ace of Spades Autoflower pushes harder on relaxed effects.
Growing 501st OG Feminized vs growing Ace of Spades Autoflower
501st OG Feminized
- Flowering: Not specified
- Indoor yield: Not specified
- Outdoor yield: Not specified
- Height: Not specified
- Difficulty: Intermediate
Grow 501st OG Feminized in Canada — 74/26 indica with pine terpenes. 16-20% THC. Feminized seeds.
Ace of Spades Autoflower
- Flowering: 8-10 weeks
- Indoor yield: 350-500g/m²
- Outdoor yield: 50-200g/plant
- Height: 60-100cm
- Difficulty: Easy
Ace of Spades Autoflower delivers relaxing indica effects in a fast-finishing autoflowering format — seed to harvest in 9-11 weeks.
Ace of Spades Autoflower finishes 91 weeks sooner than 501st OG Feminized, which matters most for outdoor growers chasing the first frost or anyone running back-to-back indoor cycles. On harvest weight, Ace of Spades Autoflower edges ahead, especially when you give it a full SCROG net. If you are still building muscle memory around feeding and humidity control, lean on Ace of Spades Autoflower.
Which should you grow?
Here is the short version of the verdict:
Best for beginners
Ace of Spades Autoflower
Best yield
Ace of Spades Autoflower
Fastest harvest
Ace of Spades Autoflower
Highest THC
Ace of Spades Autoflower
Frequently asked questions
Which is stronger, 501st OG Feminized or Ace of Spades Autoflower?+
Ace of Spades Autoflower comes in higher on the lab sheets at around 20%, compared with 18% for 501st OG Feminized. That said, real-world potency depends on phenotype, cure, and grow conditions — both strains can deliver a serious hit when grown well.
Which yields more, 501st OG Feminized or Ace of Spades Autoflower?+
Ace of Spades Autoflower pulls ahead on yield with up to 350-500g/m², while 501st OG Feminized tops out around . If grams per square meter is the deciding factor, Ace of Spades Autoflower is the safer pick.
Which is faster to harvest?+
Ace of Spades Autoflower flowers in around 8-10 weeks, beating 501st OG Feminized's window. For a quicker turn-around or for outdoor growers fighting an early frost, Ace of Spades Autoflower is the smarter bet.
Which is easier to grow?+
Ace of Spades Autoflower is the more forgiving plant of the two — rated Easy versus Intermediate for 501st OG Feminized. First-time growers will have a smoother run with Ace of Spades Autoflower, especially in a small tent.
Where can I buy 501st OG Feminized or Ace of Spades Autoflower seeds in Canada?+
Royal King Seeds carries both 501st OG Feminized and Ace of Spades Autoflower as feminized seeds shipped discreetly across Canada. Each strain ships with our germination guarantee and tracked Canada Post delivery in plain unmarked packaging. Visit the 501st OG Feminized page or the Ace of Spades Autoflower page to pick your pack size in CAD.
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