Sense63 Z-Up Auto (FastBuds), "Z-Up"
Profile
Breeder: FastBuds, feminized, autoflowering
Type: sativa-dominant
Award: Best New Strain at the Autoflower World Cup 2025
Duration: 8 to 9 weeks from germination to harvest, sometimes listed as 8 to 10 weeks
Height: 70–120 cm
THC: up to 29%
Aroma: Lime lemonade with a strong citrus note
Yield indoor: 450–600 g/m²
Cultivation: more demanding than other autos, likes it warm and only tolerates light feeding
Soil and Nutrients
Pot: 7 liters
Substrate: Biobizz Light-Mix with Biobizz worm humus
Additives: BioTabs (fertilizer tablets), Startrex, Mycorrhiza, Bactrex, Orgatrex
Current Status (10/05/2026)
Age: about 7–8 weeks from germination
Veg Duration: about 4 weeks, then went into bloom on its own
Flowering: about week 3–4 of flowering
Training: none, natural growth in Christmas tree shape
Buds: bud sites with dense white pistils at all shoot tips, main cola starting to close
Leaf Color: very dark, bluish green
Health: yellow leaf tips on almost all fingers, slightly over-fertilized. No spots, no pests, no mold.
Outlook: roughly 3–5 weeks until harvest
Weekly Update
The Z-Up Auto from FastBuds is in bloom, around week three to four, and is about seven to eight weeks old. It is growing in a 7-liter pot in Biobizz Light-Mix with worm humus, along with BioTabs, Startrex, Mycorrhiza, Bactrex, and Orgatrex. It has not been trained and grows in a classic Christmas tree shape with a strong main stem and many evenly spaced side branches. At all tips, there are bud sites with dense white pistils, and the main cola is slowly closing. The foliage is very dark and bluish green, with yellow tips on almost all leaves, indicating it has received a bit too many nutrients. Otherwise healthy, no pests, no mold.