3 Kings Autoflower vs Ace of Spades Feminized — Side-by-Side Comparison
Choosing between 3 Kings Autoflower and Ace of Spades Feminized? 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.
3 Kings Autoflower vs Ace of Spades Feminized at a glance
| Spec | 3 Kings Autoflower | Ace of Spades Feminized |
|---|---|---|
| THC | 16% | 20%winner |
| Strain split | 13% Indica / 87% 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 | Easywinner | Intermediate |
| Autoflower | Yes | No |
| Feminized | Yes | Yes |
Effects compared
3 Kings Autoflower delivers
Both share
Ace of Spades Feminized delivers
3 Kings Autoflower and Ace of Spades Feminized both bring happy to the experience, but 3 Kings Autoflower leans more into energetic territory while Ace of Spades Feminized pushes harder on relaxed effects.
Growing 3 Kings Autoflower vs growing Ace of Spades Feminized
3 Kings Autoflower
- Flowering: 8-10 weeks
- Indoor yield: 350-500g/m²
- Outdoor yield: 50-200g/plant
- Height: 60-100cm
- Difficulty: Easy
3 Kings Autoflower delivers uplifting sativa effects in a fast-finishing autoflowering format — seed to harvest in 9-11 weeks.
Ace of Spades Feminized
- Flowering: Not specified
- Indoor yield: Not specified
- Outdoor yield: Not specified
- Height: Not specified
- Difficulty: Intermediate
Ace of Spades Feminized autoflower seeds — indica genetics at 18-22% THC. Relaxed effects with herbal flavor. Ships across Canada.
3 Kings Autoflower finishes 91 weeks sooner than Ace of Spades Feminized, which matters most for outdoor growers chasing the first frost or anyone running back-to-back indoor cycles. On harvest weight, 3 Kings 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 3 Kings Autoflower.
Which should you grow?
Here is the short version of the verdict:
Best for beginners
3 Kings Autoflower
Best yield
3 Kings Autoflower
Fastest harvest
3 Kings Autoflower
Highest THC
Ace of Spades Feminized
Frequently asked questions
Which is stronger, 3 Kings Autoflower or Ace of Spades Feminized?+
Ace of Spades Feminized comes in higher on the lab sheets at around 20%, compared with 16% for 3 Kings Autoflower. 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, 3 Kings Autoflower or Ace of Spades Feminized?+
3 Kings Autoflower pulls ahead on yield with up to 350-500g/m², while Ace of Spades Feminized tops out around . If grams per square meter is the deciding factor, 3 Kings Autoflower is the safer pick.
Which is faster to harvest?+
3 Kings Autoflower flowers in around 8-10 weeks, beating Ace of Spades Feminized's window. For a quicker turn-around or for outdoor growers fighting an early frost, 3 Kings Autoflower is the smarter bet.
Which is easier to grow?+
3 Kings Autoflower is the more forgiving plant of the two — rated Easy versus Intermediate for Ace of Spades Feminized. First-time growers will have a smoother run with 3 Kings Autoflower, especially in a small tent.
Where can I buy 3 Kings Autoflower or Ace of Spades Feminized seeds in Canada?+
Royal King Seeds carries both 3 Kings Autoflower and Ace of Spades Feminized 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 3 Kings Autoflower page or the Ace of Spades Feminized page to pick your pack size in CAD.
Related comparisons
3 Kings Autoflower vs $100 OG Feminized
Side-by-side comparison
Ace of Spades Feminized vs 13 Dawgs Feminized
Side-by-side comparison
3 Kings Autoflower vs 24k Gold Autoflower
Side-by-side comparison
Ace of Spades Feminized vs 24k Gold Feminized
Side-by-side comparison
3 Kings Autoflower vs 3 Kings Feminized
Side-by-side comparison
Ace of Spades Feminized vs 303 OG Feminized
Side-by-side comparison