Z-Up Auto by FastBuds – Sativa-Dominant Autoflower with Lime Soda Terps & 29% THC

Z-Up Auto by FastBuds is a sativa-dominant autoflower that delivers a lightning-fast, mood-boosting high and a terpene profile like no other—think sparkling lime soda with a sour citrus kick, all wrapped in dense, trichome-coated buds that reek of freshness and power.

Are you tired of bland, predictable strains that lack character?

Most autoflowers give you decent yields or okay flavor—but rarely both. And when it comes to sativa-dominant effects, many fall flat, leaving you with anxiety instead of energy, or worse—nothing at all.

What happens when your sativa doesn’t deliver the spark you need?

You waste time, effort, and space on plants that don’t elevate your mood or your grow. You end up with weak flavor, inconsistent potency, or buds that smell like hay instead of heaven. And when you're counting on that morning boost or creative lift, a dud strain kills your vibe before it even starts.

Z-Up Auto is your fizzy, flavorful, full-throttle sativa fix

With up to 29% THC and a zesty, effervescent lime soda terpene profile, Z-Up Auto delivers a fast-hitting, long-lasting energetic high that lifts your mood without crashing. Her sativa-leaning genetics (65% sativa) mean vibrant flavor, uplifting effects, and dense, sticky buds that glisten with resin. Whether you're growing indoors or outdoors in warm climates, she produces 450–600 g/m² (15.87–21.16 oz/ft²) indoors or up to 300 g (10.58 oz) per plant outdoors—no guesswork, no letdowns.

Why Z-Up Auto delivers unmatched flavor and consistency

Z-Up Auto’s unique terpene expression—dominated by limonene and other citrus-forward compounds—comes from a precise genetic blend of RS-11 Cut and Auto Z F5. This F5 generation ensures stability, so every plant delivers the same tangy lime, sweet lemon, and sour citrus punch. Her compact structure (70–120 cm / 2.30–3.94 ft) and light feeding needs make her easy to manage, while low-stress training (LST) helps maximize yields without stressing the plant. She thrives under 18–20 hours of light, prefers temperatures between 22–28°C, and rewards growers with XL-sized, bright green buds dusted in trichomes and fiery orange pistils.

Factors that influence your results and how to control them

• Light cycle: Keep 18–20 hours daily; consistent photoperiod ensures stable flowering in autoflowers.
• Nutrient strength: She’s a light feeder—use 60–70% of standard doses to avoid burn and lockout.
• Temperature: Maintain 22–28°C to boost terpene and resin production.
• Airflow: Gentle but steady circulation prevents mold and strengthens stems.
• Training: Use LST early to control height and expose more bud sites.
• Watering: Let topsoil dry slightly between irrigations to prevent overwatering.
• Harvest timing: Watch trichomes—milky means energetic high; amber brings calm.

Recommended routine for peak performance every time

1. Start in final pot (18–27 L) to avoid transplant stress.
2. Use light, airy soil or coco with Kit Hesi Starterbox Soil for balanced nutrition.
3. Apply mild nutrients from week 2, increasing slightly in mid-flower.
4. Use LST when 4–5 nodes tall to shape canopy.
5. Monitor trichomes weekly in last 2–3 weeks.
6. Flush 7–10 days before harvest with Connoisseur Bloom A+B for cleaner taste.
7. Dry slowly at 18–22°C and 50–60% RH.
8. Cure in jars for 2–4 weeks, burping daily.

Advantages of growing Z-Up Auto consistently

• More confidence in every grow—stable genetics mean predictable results.
• Less waste—optimized feeding and structure reduce nutrient and space loss.
• Faster learning curve—repeatable conditions help you master your setup.
• Greater control—no guessing games with height, yield, or potency.
• Better flavor—consistent terpene expression with every harvest.
• Higher returns—XL yields from compact, manageable plants.

Technical specifications

• Breeder / Brand: FastBuds
• Type: Feminized Autoflowering
• Dominance: Sativa 65% / Indica 35%
• Genetics: RS-11 Cut × Auto Z F5
• Flowering time: 8–9 weeks from seed to harvest
• Indoor yield: 450–600 g/m² (15.87–21.16 oz/ft²)
• Outdoor yield: 60–300 g/plant (2.12–10.58 oz/plant)
• Indoor height: 70–120 cm (2.30–3.94 ft)
• Outdoor height: 70–120 cm (2.30–3.94 ft)
• Difficulty: Low to medium
• Structure: Compact, dense branching, moderate stretch
• Climate: Prefers warm to hot climates; tolerates heat well
• Resistance: Moderate resistance to pests and mold
• Training: Suitable for LST; avoid topping or FIM
• Recommended pot: 18–27 L final pot
• Light: 18–20 h daily
• Temperature: 22–28°C (optimal for terpenes)
• Humidity: 40–60% (lower in late flowering)
• pH: 6.0–6.5 (soil), 5.8–6.2 (coco/hydro)
• Smell during grow: Very strong—carbon filter recommended
• THC: Up to 29%
• CBD:
• Aromatic profile: Limonene, terpinolene, beta-pinene
• Flavour: Lime, lemon, sour citrus, fizzy soda
• Effect: Energetic, uplifting, creative—ideal for daytime use

Frequently Asked Questions

What should I do if my Z-Up Auto isn’t showing the lime soda flavor?

Ensure stable temperatures (22–28°C) and avoid overfeeding. Terpene expression thrives under mild stress and proper airflow. Also, harvest based on trichomes—milky clear for maximum terps.

How can I tell if I’m overfeeding this strain?

Watch for dark green leaves, clawing tips, or nutrient burn. Z-Up Auto is a light feeder—start with 50–60% of recommended doses and increase only if needed.

Can I grow Z-Up Auto outdoors in a cooler climate?

She prefers warm to hot climates. In cooler zones, grow in a greenhouse or use a cover to retain heat. Start late spring to early summer for best results.

Why is my plant stretching too much?

Ensure adequate light intensity and spacing. If plants are too close, they stretch to reach light. Use LST early to control height and improve canopy uniformity.

Is the smell really that strong?

Yes—reviewers report neighbors noticing it. Use a carbon filter like Guardian Maria Green to stay discreet.

Personal Experience of Pevgrow’s CEO (Alan)

I first tried Z-Up Auto during a summer grow test with ten other sativa-dominant autos. From the moment it popped, it stood out—vibrant green, fast start, and that unmistakable citrus punch in the air. I ran two grows: one in soil with mild organic nutes, another in coco with a light mineral feed. Both yielded heavily, but the coco version had a sharper terpene profile. I used LST on four plants, keeping them under 100 cm (3.28 ft), and still got over 500 g/m² (17.7 oz/ft²). The high is clean, bubbly, and lasts for hours—perfect for morning sessions or creative work. One thing: the smell is no joke. I had to upgrade my carbon filter mid-grow. But honestly? Worth every second. This is one of the few autos that truly delivers on both flavor and function, consistently. If you want a sativa that doesn’t disappoint, Z-Up Auto is your new go-to.