Nepalese Jam Regular Seeds by Ace Seeds – Fast-Flowering Sativa Hybrid for Cold Climates

Nepalese Jam Regular by Ace Seeds is a fast-flowering sativa-dominant hybrid that brings mountain resilience and tropical vibes into one compact, mold-resistant plant, perfect for challenging climates and discreet grows.

Still stuck with finicky strains that can't handle a little rain or drop in temperature? You're not alone. Most sativas stretch, stall, or rot when the weather turns, leaving you with weak yields and wasted time. And if you're growing outdoors in a cooler zone, your options feel limited to slow, sensitive plants that need constant babysitting.

But what if you could grow a sativa that actually thrives in fog, laughs off mildew, and finishes fast—without sacrificing flavor or effect? That’s exactly what most growers miss out on: a truly hardy, low-maintenance sativa that performs in real-world conditions, not just perfect labs.

That’s where Nepalese Jam Regular steps in. Bred from pure Nepalese highland genetics and touched with Jamaican '85, this regular seed delivers a warm, expansive high, a sweet caramelized aroma, and serious resistance to cold, rain, and botrytis. It flowers in just 8–9 weeks indoors and is ready by late September outdoors—perfect for short seasons. Whether you're in northern Europe or a foggy coastal region, this strain stands tall where others fail.

What It Feels Like to Grow and Smoke Nepalese Jam

You’ll notice it from day one: this plant doesn’t panic when the thermometer drops. It stays compact, focused, and resinous, even under low light or damp air. Indoors, it rarely exceeds 1.10 m (3.61 ft), making it ideal for stealth setups. Outdoors, it handles temperatures down to 10°C (50°F) and keeps flowering when frost threatens.

When you finally harvest, the buds are dense and coated in trichomes—perfect for hand-rolling your own first-class hash. The high is clean, happy, and uplifting: no racing thoughts, just a smooth, 2–3 hour float that sparks creativity without locking you to the couch. It’s the ideal wake-and-bake strain for artists, gardeners, or anyone who wants to stay functional and inspired.

How to Maximize Your Harvest and High

Start right and let this landrace shine. Keep your inputs moderate—this isn’t a heavy feeder—and avoid aggressive pruning. Let its natural columnar structure do the work.

• Germinate seeds in a warm, dark place at 22–25°C (71.6–77°F) with high humidity
• Use well-draining soil or coco; consider adding Bachumus Ecohemp (Trabe) Growth for stronger roots
• Keep light cycles at 18/6 (veg) or 12/12 (flower) for photoperiod grows
• Train gently with LST to improve airflow and light penetration
• Boost resin production in mid-flower with Agrobeta Trichome
• Harvest when trichomes turn milky to slightly amber for balanced effects
• Flush 7–10 days before harvest to improve flavor and smoothness

Why This Strain Fits Perfectly Into Your Grow

Nepalese Jam isn’t just a standalone performer—it’s a team player. Its stability and resistance make it a smart choice for breeding projects or SCROG setups. Pair it with purple or CBD-rich strains for a diverse harvest, or use it as a backbone for creating your own fast-flowering hybrids. It also pairs beautifully with low-odor varieties if discretion is key.

Technical specifications

• Breeder / Brand: Ace Seeds
• Type: Regular
• Dominance: 60% sativa / 40% indica
• Genetics: (Nepalese × Jamaican '85) × Nepalese
• Flowering indoors: 8–9 weeks
• Harvest outdoors: End of September to early October (Northern Hemisphere)
• Indoor yield: 450–510 g/m² (16–18 oz/ft²)
• Outdoor yield: 600–800 g/plant (21–28 oz/plant)
• Indoor height: 0.80–1.10 m (2.62–3.61 ft)
• Outdoor height: 1.00–1.30 m (3.28–4.27 ft)
• Difficulty: Low to medium
• Structure: Small-medium, columnar, dense branching
• Resistance: High resistance to botrytis, powdery mildew, cold, and rain
• THC: 14–18%
• CBD: 0–0.5%
• Aromatic profile: Beta-myrcene (dominant), beta-caryophyllene, linalool, nerolidol
• Flavour: Sweet, creamy, caramel, honey, tropical undertones
• Effect: Uplifting, creative, focused, long-lasting without sedation

Frequently Asked Questions

Is Nepalese Jam good for beginners?

Yes, its high resistance to mold, pests, and cold makes it very beginner-friendly, especially for outdoor grows in challenging climates.

Can I grow this strain indoors under low light?

Absolutely. Nepalese Jam adapts well to lower light conditions and still produces quality yields without stretching excessively.

Is this strain suitable for hash production?

Definitely. Its dense, resinous buds are ideal for hand-pressing or dry-sifting into high-quality hash.

Does it have a strong smell during flowering?

The aroma is moderate—sweet and floral with tropical hints. It’s noticeable but not overpowering, making it manageable in most setups.

Why choose regular seeds over feminized?

Regular seeds allow breeders to create new hybrids, test phenotypes, or maintain genetic diversity. They’re perfect if you want to develop your own strains.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Nepalese Jam last season in my outdoor greenhouse in the Pyrenees—cold, damp, and unpredictable. Most sativas would’ve rotted by October, but this one stood strong. I planted five regular seeds, and all thrived. I kept two females for harvest and used the males to cross with a CBD-rich indica—best breeding decision I’ve made all year.

The yield wasn’t the heaviest I’ve seen, but the quality? Exceptional. The buds were rock-hard, glistening with resin. I made hash that smelled like honey and incense—my friends still talk about it. The high is smooth, clear, and lasts for hours. No anxiety, no crash. I now keep a pack every year as my go-to for breeding and short-season grows. Pro tip: don’t overfeed it. Let the genetics do the work.