Moby Dick
Cannabis seeds
by Silent Seeds
Moby Dick Auto Cannabis Seeds by Silent Seeds
Moby Dick Auto is an autoflowering cannabis seed from Silent Seeds that delivers the famous Moby Dick genetics in a faster, fuss-free format. Slightly sativa-dominant, she grows up to 140cm tall — unusually large for an auto — and produces dense, resin-caked buds with 22% THC. If you've been chasing auto seeds that don't compromise on yield or potency, this one belongs on your shortlist.
This pack contains 3 feminised autoflowering seeds. No need to sex your plants — every seed produces a female. No light schedule changes required; she'll flower automatically regardless of photoperiod.
Why Moby Dick Auto Seeds Deserve Your Grow Space
We've seen a lot of autos come through the shop over the years, and the most common complaint is always the same: they're too small, the yields are disappointing, and the smoke doesn't match the photoperiod version. Silent Seeds built Moby Dick Auto specifically to address all three of those gripes.
At up to 140cm, she's tall enough that first-time growers sometimes double-check whether they actually planted an auto. The structure is classic sativa-leaning — a slender central stem with medium internodal spacing and plenty of lateral branching. That morphology means light penetrates deep into the canopy without much training, though she responds well to LST if you want to spread her out under a flat SCROG net. The vegetative phase runs roughly 3–4 weeks before she transitions to flower on her own, and you can expect a reasonable stretch during early bloom as she prepares to stack those dense, compact colas.
The honest limitation? She's not a set-and-forget windowsill plant. At 140cm with heavy buds, you'll want some support — bamboo stakes or a trellis net — especially in the final weeks when the colas pack on weight. Without support, branches can lean or snap. It's a good problem to have, but it's still a problem if you ignore it.
Moby Dick Auto Yield and Grow Specs
Indoor growers can pull up to 500g/m² from Moby Dick Auto, which puts her firmly in the top tier for autoflowering genetics. Outdoors, expect around 230g per plant — solid numbers for an auto that finishes in roughly 10–11 weeks from seed.
| Specification | Detail |
|---|---|
| Seed bank | Silent Seeds |
| Genetics | Moby Dick Auto (sativa-dominant hybrid) |
| Type | Autoflowering, feminised |
| THC content | 22% |
| Height | Up to 140cm |
| Indoor yield | Up to 500g/m² |
| Outdoor yield | Up to 230g/plant |
| Vegetative phase | Approximately 3–4 weeks |
| Seeds per pack | 3 |
Aroma, Flavour, and Resin Production
Crack open a cured jar of Moby Dick Auto and the first thing that hits you is sweet citrus — bright, almost like lemon zest left in the sun. Underneath that, there's a woody backbone of pine and cedar, with a spicy edge that lingers in the nose. It's a complex terpene profile that translates directly into the smoke: the inhale is citrus-forward, the exhale brings out the spice and wood. Not a one-note strain by any stretch.
Resin production is genuinely impressive. Like the original photoperiod Moby Dick, this auto version coats its buds in a thick layer of trichomes. The buds themselves are bright green with fiery red pistils, full round calyxes, and a high calyx-to-leaf ratio — which means less trimming and more usable flower per plant. If you're into making your own concentrates, dry sift, or bubble hash, Moby Dick Auto is one of the best auto candidates we'd point you towards. The resin coverage alone makes the extraction worthwhile.
How to Grow Moby Dick Auto Seeds
She's not a difficult plant to grow, but she does reward growers who pay attention. Here's the process from seed to harvest:
- Germination: Use the paper towel method or plant directly into a small pot of moist, light soil mix. Moby Dick Auto germinates quickly — most growers report taproots within 24–72 hours. Keep the medium moist, not soaked, and maintain a temperature around 22–26°C.
- Seedling stage (week 1–2): Once the seedling emerges, give her gentle light — 18/6 or 20/4 light cycle works well for autos throughout their entire life. Start in the final pot if possible; autos don't love transplanting because any root stress during the short veg phase costs you growth time you can't get back.
- Vegetative phase (week 2–5): She'll grow vigorously, developing a strong central stem and healthy side branches. This is the window for low-stress training (LST) if you want to open up the canopy. Bend the main stem gently and tie it down to encourage lateral growth. Don't top her — topping autos is risky because they can't recover the lost time.
- Flowering (week 5–10+): Moby Dick Auto will start flowering on her own around week 4–5. Expect a noticeable stretch in the first couple of weeks of bloom. Switch to a bloom nutrient schedule and consider adding support stakes as the buds develop. She produces large, dense colas that get heavy.
- Harvest: Check trichomes with a jeweller's loupe. When most trichomes are milky white with a few turning amber, she's ready. Dry in a dark, well-ventilated space at around 18–20°C and 55–60% humidity for 7–10 days, then cure in glass jars for at least two weeks. The aroma develops significantly during the cure.
Indoor vs Outdoor: Where Does Moby Dick Auto Perform Best?
Moby Dick Auto performs well in both environments, but the results differ. Indoors under 18–20 hours of light, she'll stay more compact (usually 100–130cm) and produce those impressive 500g/m² yields. A 600W HPS or equivalent LED in an 80x80cm or 100x100cm tent is more than enough for 2–4 plants.
Outdoors, she'll stretch closer to her 140cm maximum and produce up to 230g per plant. She does best in warm, Mediterranean-style climates with plenty of direct sunlight, but her autoflowering genetics mean she's less fussy about day length than photoperiod strains. You can start her outdoors from late spring through midsummer and still get a full harvest before autumn sets in. In cooler northern European climates, she'll still finish — just keep an eye on late-season humidity and the risk of bud rot on those dense colas.
If we had to pick? Indoors gives you more control and bigger yields per square metre. But outdoors in a good spot, the flavour development from natural sunlight is hard to beat.
Moby Dick Auto Compared to Other Auto Seeds
How does she stack up against other popular autos? Here's a quick comparison:
| Strain | THC | Indoor yield | Height | Key trait |
|---|---|---|---|---|
| Moby Dick Auto (Silent Seeds) | 22% | Up to 500g/m² | Up to 140cm | Resin production, balanced sativa effect |
| Gorilla Glue Auto | 20–24% | 400–500g/m² | 80–120cm | Heavy resin, more indica-leaning |
| Critical Purple Auto | 18–20% | 350–450g/m² | 70–100cm | Compact, fast finish, purple colouring |
Moby Dick Auto's combination of height, yield, and 22% THC makes her one of the most productive sativa-leaning autos you can grow. Gorilla Glue Auto matches her on resin but tends to run shorter and more indica in effect. Critical Purple Auto is the better choice if you're tight on vertical space or want a quicker turnaround, but she won't match Moby Dick Auto's output.
Growing Moby Dick Auto indoors? Pair her with a proper grow tent and carbon filter setup — at 140cm with heavy resin production, you'll want both the vertical clearance and odour control. A jeweller's loupe is also worth grabbing for checking trichome ripeness at harvest time.
What to Watch Out For
A few things we'd flag from experience with big-yielding autos like this one:
- Branch support is not optional. Those dense colas get heavy in the final 2–3 weeks. Bamboo stakes, plant yo-yos, or a SCROG net will save you from snapped branches.
- Don't transplant. Start in your final pot — 11–15 litres is the sweet spot. Autos have a fixed vegetative window, and transplant shock eats into it.
- Watch humidity in late flower. Dense buds plus high humidity equals bud rot. Keep relative humidity below 50% during the last few weeks of bloom, and make sure you've got decent airflow around the canopy.
- Don't overfeed. She's vigorous but not a heavy feeder. Start at half the recommended nutrient dose and increase only if she looks hungry. Nutrient burn is more common than deficiency with well-bred autos.
Frequently Asked Questions
How tall does Moby Dick Auto grow?
Up to 140cm, which is unusually tall for an autoflowering strain. Indoors under strong light, most plants stay between 100–130cm. Make sure your grow tent has enough headroom — an 80x80x160cm tent is the minimum we'd recommend.
What's the yield of Moby Dick Auto indoors?
Up to 500g/m² indoors under optimal conditions. Outdoors, expect around 230g per plant. These are strong numbers for an auto — comparable to many photoperiod strains.
Is Moby Dick Auto good for making concentrates?
Yes — she's one of the best autos for extraction. Like the original photoperiod Moby Dick, this version produces a thick coat of trichomes and a high calyx-to-leaf ratio, which means more resin per gram of trimmed bud. Great for dry sift, bubble hash, or rosin pressing.
Do I need to change the light schedule for Moby Dick Auto?
No. As an autoflowering strain, she'll transition from veg to flower on her own regardless of light hours. Most growers run 18/6 or 20/4 from seed to harvest. No need to switch to 12/12.
Can I grow Moby Dick Auto outdoors in northern Europe?
Yes. Her autoflowering genetics mean she doesn't depend on shortening days to trigger flowering. Plant from late spring onward and she'll finish before autumn. Just watch humidity levels in the final weeks — those dense buds can develop mould in damp conditions.
Should I top Moby Dick Auto?
We'd advise against it. Topping removes the main growth tip, and autos don't have enough vegetative time to fully recover. Low-stress training (LST) — bending and tying down branches — gives you a wider canopy without the risk.
How long does Moby Dick Auto take from seed to harvest?
Roughly 10–11 weeks total. The vegetative phase lasts about 3–4 weeks, with flowering taking another 6–7 weeks. Add a week or two for drying and at least two weeks for curing.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.