Jack Plant Feminized Seeds by Advanced Seeds – Sativa Powerhouse for High Yields & Euphoric Effects

Jack Plant feminized seeds by Advanced Seeds are your ticket to a towering sativa experience with massive yields, euphoric effects, and sweet, earthy flavors—perfect for outdoor growers who want power, potency, and presence.

Are you stuck with small, weak plants and lackluster highs?

You’ve tried sativas before—tall, yes, but often floppy, slow, and underperforming. You end up with wispy buds, low resin, and a high that fizzles out before it even starts. And if you're growing outdoors, mold or pests can wipe out your entire season.

Why do most sativas fail to deliver on their promises?

Because they’re either too sensitive, too slow, or too fragile. They demand perfect conditions, constant attention, and still might not reward you with the resinous, potent harvest you’re after. You’re left frustrated, wasting time and energy on plants that look impressive but don’t deliver.

Jack Plant changes the game—big, bold, and built to thrive

Jack Plant isn’t just another tall sativa—it’s a powerhouse. With genetics rooted in Jack Herer, it grows up to 5 m (16.4 ft), produces up to 500 g/m² (1.76 oz/ft²), and delivers a THC punch of 20%. It’s mold-resistant, vigorous, and built for real-world conditions, not just ideal labs. This is the sativa that actually delivers on its hype.

Why Jack Plant outshines your current sativa

Forget the finicky, fragile sativas of the past. Jack Plant combines explosive growth with resilience and quality. It stretches hard but stays strong, flowers in 60–70 days, and packs buds so dense and resinous they practically glitter. Whether you're chasing euphoria or big harvests, this plant doesn’t compromise.

Key features you’ll notice from the very first grow

• Massive height up to 5 m (16.4 ft)—perfect for outdoor dominance and maximum light capture.
• THC levels up to 20%—delivering a powerful, uplifting cerebral high.
• Yields up to 500 g/m² (1.76 oz/ft²)—dense, resin-heavy buds that fill your stash jar.
• Sweet, earthy aroma with citrus and pine—complex and inviting, not harsh or skunky.
• Mold-resistant structure—handles humidity and rain better than most sativas.
• 60–70 day flowering—fast finish for a sativa, so you’re not waiting forever.
• Thrives outdoors in Mediterranean climates—loves sun, heat, and space to stretch.

Who this strain is especially interesting for

Jack Plant is ideal for growers who want a high-performance sativa without the headache. Whether you're a seasoned cultivator or stepping up from beginner strains, this plant rewards ambition.

• Outdoor growers with space and sun—maximize height and yield.
• Connoisseurs chasing euphoric, creative highs—no couch lock, just mental lift.
• Those tired of weak, low-resin sativas—this one actually delivers.
• Gardeners in warm, dry climates—perfect for Spain, California, or similar zones.

How to integrate Jack Plant into your routine without overcomplicating things

Start seeds indoors 4–6 weeks before last frost, then transplant to final spot. Use a 20–25 L (5.3–6.6 gal) pot for maximum growth. Keep it in full sun, water deeply but infrequently, and support branches as they get heavy. Minimal pruning—just remove lower, shaded growth. Feed steadily through veg, then switch to bloom nutrients at flowering. It’s low-maintenance for its size.

Technical specifications

• Breeder / Brand: Advanced Seeds
• Type: Feminized
• Dominance: Sativa-dominant hybrid
• Genetics: Jack Herer (Sativa) × Selected Indica
• Flowering time: 60–70 days
• Height indoors: 0.75–1.50 m (2.46–4.92 ft)
• Height outdoors: 3.0–5.0 m (9.84–16.4 ft)
• Yield indoors: 450–500 g/m² (1.59–1.76 oz/ft²)
• Yield outdoors: 450–500 g/plant (15.87–17.64 oz/plant)
• THC: 20%
• CBD: Low (approx.)
• Difficulty: Medium
• Structure: Tall, vertical, strong internodal spacing
• Resistance: High resistance to mold and pests
• Training: Suitable for LST and SCROG; avoid aggressive topping
• Recommended pot: 20–25 L (5.3–6.6 gal) final pot
• Light: 18/6 in veg, 12/12 in flowering
• Temperature: 22–26 °C (71.6–78.8 °F) veg, 20–25 °C (68–77 °F) flowering
• Humidity: 50–60% veg, 40–50% flowering
• pH: 6.0–6.5 (soil)
• Smell in grow: Medium to high—use a carbon filter if needed
• Aromatic profile: Limonene, myrcene, pinene
• Flavour: Sweet, earthy, citrus, pine
• Effect: Euphoric, uplifting, creative—ideal for daytime use

How to grow Jack Plant for maximum yield and potency

Jack Plant thrives when you let it grow big and bold. Focus on root development early, then support its vertical stretch and resin production in flowering.

Quick overview: feminized · Advanced Seeds · 60–70 day flowering · medium difficulty · ideal for outdoor or large indoor spaces.

Safe start: germinate in a moist, dark environment at 22–25 °C (71.6–77 °F). Transplant carefully when the taproot is ~1 cm (0.4 in) long. For a hassle-free start, Root Riot Sponges speed up rooting and reduce transplant stress.

Stable seedling: keep humidity at 60–70%, light intensity moderate. Water lightly and let soil dry slightly between waterings. In sustained growth, Pro Roots keeps leaves green and structure compact.

Directed growth: use 18/6 light cycle; transplant to final 20–25 L (5.3–6.6 gal) pot early. Apply LST to control height and expose lower buds. Avoid aggressive pruning—this sativa recovers slowly.

Efficient flowering: switch to 12/12 light; keep RH at 40–50% to prevent mold. Support heavy colas with stakes. At peak flowering, Heavy Bud Pro Grotek helps with density and a cleaner taste.

Harvest and refinement: harvest when trichomes are mostly milky with some amber. Flush 7–10 days before harvest. Dry at 18–22 °C (64.4–71.6 °F) and 50–60% RH for 10–14 days. Cure in jars for 2–4 weeks, burping daily.

Frequently Asked Questions

What’s the flowering time for Jack Plant?

Jack Plant flowers in 60–70 days under a 12/12 light cycle. Outdoors, harvest is typically between October 15–30 in the northern hemisphere.

How tall does Jack Plant get?

Indoors, it reaches 0.75–1.50 m (2.46–4.92 ft). Outdoors, it can soar to 3.0–5.0 m (9.84–16.4 ft) in optimal conditions.

Is Jack Plant mold-resistant?

Yes, it has high resistance to mold and mildew, making it a solid choice for humid climates or outdoor grows with occasional rain.

Can I grow Jack Plant indoors?

Yes, but it needs space. Use SCROG or LST to manage height, and keep it in a 20–25 L (5.3–6.6 gal) pot for best results.

What does Jack Plant taste and smell like?

It has a sweet, earthy aroma with citrus and pine notes. The flavour is smooth, complex, and slightly spicy—no harshness.

Personal Experience of Pevgrow’s CEO (Alan)

I grew Jack Plant last summer in my outdoor garden in Murcia—full sun, hot days, and the occasional breeze. I started five seeds, all germinated fast, and by week 6, they were already over 1.20 m (3.94 ft) tall. I used LST to keep them manageable and staked the main colas when they got heavy. No mold, no pests, just steady growth. At harvest, I got around 480 g (16.93 oz) per plant—dense, rock-hard buds covered in trichomes. The high? Pure euphoria. I felt creative, talkative, and energized—perfect for evening hangs with friends. Compared to other sativas, Jack Plant is way more resilient and productive. I’d grow it again in a heartbeat, especially for outdoor season. My only tip: don’t over-prune. Let it stretch, support it well, and enjoy the ride.