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Grass-O-Matic Seeds

Auto Mass is the whole Grass-O-Matic story in one seed. Critical Mass muscle. Lowryder speed. Harvest 9 to 10 weeks after sprouting. The seedbank behind it was among the first to bet everything on autoflowers, and every cannabis seed it sells is autoflowering and feminized.

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10% off Auto Mass (Grass-O-Matic)

Auto Mass (Grass-O-Matic) Feminized

9-week turnaround: Seed to harvest in 9 weeks, one of the fastest auto timelines available.Critical Mass x Lowryder cross: Afghani x Skunk 1 bulk meets ruderalis speed in one feminized auto.Grows anywhere: Mould and pest resistant, tough enough to handle varied conditions without fuss.Resin-heavy...

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€ 29,75 € 26,77

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Grass-O-Matic

One brand, one mission, and at Zamnesia right now, one carefully chosen strain. Here is what Grass-O-Matic stands for and why Auto Mass earns its place.

About Grass-O-Matic Seeds

Long before autoflowers were fashionable, Grass-O-Matic committed to them completely. The seedbank was among the first to focus purely on developing autoflowering strains, and it never diluted the recipe: everything in its catalogue is autoflowering and feminized, built for growers who want a harvest without managing light schedules.

From Ruderalis to Auto Mass

Every modern auto traces back to ruderalis genetics, and Auto Mass wears that history openly: its Lowryder parent, bred from ruderalis stock by the breeder known as the Joint Doctor, is the strain that put autoflowering on the map in the first place.

The Grass-O-Matic Lineup at Zamnesia

Auto Mass

Our current Grass-O-Matic range is deliberately short: Auto Mass is the one strain we stock, and it is the brand distilled. Critical Mass, itself an Afghani x Skunk 1 union, brings the dense, resin-loaded indica build; Lowryder contributes the autoflowering trait and the speed. The buds come out visibly resinous, with an earthy, hash-adjacent aroma and a slightly skunky edge.

What Makes Grass-O-Matic Autos Different

Resilience is the quiet headline. Mould and pest resistance are listed on the spec sheet rather than promised in passing, the plant stays short indoors and around 90 cm outside, and the seed-to-harvest window is a fixed 9 to 10 weeks. The trade-offs are honest too: outdoor yields top out around 100 g per plant, and the breeder publishes no THC percentage, rating the effect simply as strong.

Growing Grass-O-Matic Seeds

Indoor and outdoor cultivation both work, and this is beginner territory in the best sense: no light-cycle changes, no repotting stress. Sow straight into the final pot, water moderately, and count the weeks. A ScrOG net is the one refinement worth considering, since the central-cola structure responds well to a little horizontal training.

Buying Grass-O-Matic Seeds at Zamnesia

Auto Mass ships fresh from our stock, quickly and in discreet packaging. If you want the wider world of autoflowers beyond one brand, the main catalogue has you covered.

Grass-O-Matic: Questions & Answers

Who are Grass-O-Matic?
Grass-O-Matic was one of the first seedbanks to focus completely on autoflowering strains. Everything in its catalogue is 100% autoflowering and feminized.
Which Grass-O-Matic strains does Zamnesia stock?
Currently one: Auto Mass, the brand's flagship. It crosses Critical Mass (Afghani x Skunk 1) with Lowryder for an easy, compact autoflower.
How long does Auto Mass take from seed to harvest?
9 to 10 weeks in total, indoors or outdoors, with no light-schedule changes needed.
Is Auto Mass good for beginners?
Yes. It is rated easy to grow, resists mould and pests, and stays compact at around 90 cm outdoors.