Silver Haze® Regular Seeds by Sensi Seeds – Legendary Sativa-Dominant Strain with Euphoric High

Silver Haze® Regular Seeds from Sensi Seeds deliver the full-force legacy of one of the most iconic sativa strains in cannabis history — a high-THC, mind-lifting powerhouse that’s won the Cannabis Cup and stood the test of time.

Is your grow space still missing that legendary spark of pure Haze magic? The kind of strain that doesn’t just get you high, but lifts your entire mindset? If your sessions feel flat, uninspired, or too heavy, you’re not just missing a strain — you’re missing an experience.

That cerebral void? The lack of creative flow, the sluggish afternoons, the uninspired smoke breaks — that’s what happens when you settle for average genetics. Most modern strains sacrifice the psychedelic clarity of true Hazes for faster finishes or fatter buds. But in doing so, they lose the soul of the high. And when you’re chasing inspiration, not just intoxication, that makes all the difference.

Silver Haze® Regular Seeds are your direct line to that lost euphoria. Bred from elite Haze genetics and stabilized with Northern Lights, this strain brings back the bright, talkative, mentally expansive high that defined a generation. With 75% sativa dominance, it grows tall and proud, filling your indoor setup with long, resin-drenched colas that shimmer like silver frost. It’s not the fastest, but it’s the realest — a strain that rewards patience with purity of effect.

What Makes Silver Haze a Grower’s Legend

For over 30 years, Silver Haze has been the benchmark for sativa excellence. It’s not just about the high — it’s about the entire journey, from germination to harvest. This strain thrives indoors under strong lighting and responds exceptionally well to training techniques like SCROG, LST, and supercropping. Outdoors, it flourishes in sunny, Mediterranean climates, reaching heights of up to 1.80 m (5.91 ft) and producing large yields of up to 550 g/m² (1.94 oz/ft²) indoors or 600 g (21.16 oz) per plant outdoors under optimal conditions.

• Genetics: Haze × Northern Lights — the original blueprint for modern sativas
• THC Level: High (approx. 20–23%) — delivers a strong, clear-headed euphoria
• Flowering Time: 10–11 weeks — longer bloom for maximum resin development
• Indoor Yield: 450–550 g/m² (1.59–1.94 oz/ft²) — dense, sticky buds rich in trichomes
• Outdoor Yield: 500–600 g/plant (17.64–21.16 oz/plant) — thrives in warm, sun-drenched environments
• Height: Tall — stretches significantly during flowering, ideal for vertical grows
• Effect: Uplifting, creative, talkative — perfect for daytime or social use

How to Grow Silver Haze for Maximum Potency

For a hassle-free start, Clonex Rooting Hormone Gel speeds up germination and strengthens early root development. In sustained growth, Bio Vega keeps leaves lush and structure vigorous without overloading on nitrogen. At the end of flowering, Bloom Booster enhances resin production and delivers a cleaner, more aromatic finish.

Quick overview: Photoperiod regular · Sensi Seeds · 65–75 days flowering · medium difficulty · ideal for indoor SCROG or warm outdoor climates.

Safe start: Germinate at 22–25 °C with high humidity. Transplant when the radicle is ~1 cm long. Use a light, airy medium to prevent damping off.

• Soak seeds in water for 12–24 hours before planting
• Use starter cubes or small pots with pH 6.0–6.5
• Keep humidity at 60–70% during seedling stage
• Avoid overwatering — let topsoil dry slightly between waterings
• Apply mild root stimulant like Clonex Rooting Hormone Gel for faster establishment

Directed growth: Maintain 18/6 light cycle during veg. Train early to control height and maximize canopy.

• Use LST or SCROG to spread the canopy and expose more bud sites
• Top or FIM during early veg to increase branching
• Use pots of 11–20 L depending on space and desired plant size
• Ensure excellent airflow to prevent mold, especially in dense foliage
• Feed with balanced veg nutrients like Bio Vega for strong, healthy growth

Efficient flowering: Switch to 12/12 light cycle. Monitor RH and support heavy colas.

• Expect significant stretch in the first 2–3 weeks of bloom
• Lower humidity to 40–50% to prevent bud rot
• Introduce bloom nutrients rich in PK during mid-flowering
• Use stakes or netting to support long, resin-heavy branches
• Apply Bloom Booster in the final 3–4 weeks for denser, more aromatic buds

Harvest and refinement: Harvest when trichomes turn milky to slightly amber for a balanced high. Flush 7–10 days before harvest to improve taste.

• Dry buds slowly at 18–22 °C and 50–60% RH for 7–10 days
• Cure in glass jars for 2–4 weeks, burping daily
• Proper curing enhances flavor and smoothness
• Store in a cool, dark place to preserve terpenes
• Enjoy the full evolution of taste — from earthy and woody to citrus and mint

Technical specifications

• Breeder / Brand: Sensi Seeds
• Type: Regular
• Dominance: Sativa (75%)
• Genetics: Haze × Northern Lights
• Flowering Time: 65–75 days
• Indoor Yield: 450–550 g/m² (1.59–1.94 oz/ft²)
• Outdoor Yield: 500–600 g/plant (17.64–21.16 oz/plant)
• Indoor Height: 1.20–1.80 m (3.94–5.91 ft)
• Outdoor Height: 1.50–2.00 m (4.92–6.56 ft)
• Difficulty: Medium
• Structure: Tall, long internodes, vigorous stretch in flowering
• Ideal Climate: Sunny / Mediterranean
• Resistance: Moderate to mold; good overall resilience
• Training: Excellent for SCROG, LST, topping, supercropping
• Recommended Pot: 11–20 L depending on space
• Light: 18/6 (veg) · 12/12 (flowering)
• Temperature: 22–26 °C (veg) · 20–25 °C (flowering)
• Humidity: 60–70% (seedling) · 50–60% (veg) · 40–50% (flowering)
• pH: 6.0–6.5 (soil) · 5.8–6.2 (coco/hydro)
• THC: Approx. 20–23%
• CBD: Low (approx.
• Aromatic Profile: Myrcene, caryophyllene, limonene
• Flavour: Earthy, woody, pine, citrus, mint
• Effect: Cerebral, uplifting, creative, talkative — ideal for daytime use

Frequently Asked Questions

What is the flowering time for Silver Haze Regular?

Silver Haze Regular has a flowering time of 65 to 75 days, making it a long-flowering sativa. Patience is rewarded with high resin production and a powerful, clear-headed high.

Can I grow Silver Haze outdoors?

Yes, but only in warm, sunny climates with long summers. It thrives in Mediterranean zones and can reach over 2 m (6.56 ft) tall. Protect it from humidity and rain to prevent mold.

Is Silver Haze good for beginners?

It’s medium difficulty — best for growers with some experience. Its tall structure and long flowering require planning, but it’s resilient and responds well to training.

What does Silver Haze taste like?

Expect a complex blend of earthy, woody, and pine notes with hints of citrus and mint. The flavor is smooth and aromatic, especially when properly cured.

Why choose regular seeds over feminized?

Regular seeds allow for breeding, genetic preservation, and pheno hunting. They’re essential for advanced growers who want to create new crosses or maintain genetic diversity.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Silver Haze Regular in my first serious indoor SCROG setup, and it changed everything. I started with four plants in 15 L pots under a 600W HPS, using LST from day one. The stretch was insane — they tripled in height during flowering — but by weaving them through the screen, I turned that vertical growth into a flat, even canopy. I fed them Bio Vega during veg, then switched to a mineral bloom with a strong PK boost. The trichome coverage was unreal — sticky, silvery buds that smelled like a forest after rain. I harvested at 75 days, dried slowly, and cured for three weeks. The high? Pure, electric clarity. No anxiety, no couch lock — just creativity, laughter, and deep conversation. It’s the kind of strain that reminds you why you started growing in the first place. My pro tip: don’t rush it. Let it stretch, train it gently, and respect the cycle. This isn’t a fast strain — it’s a legendary one.