5 Best Low Odour Cannabis Strains With High Yields

Quick Answer: What Is the Best Low Odour High Yielding Cannabis Strain?

Critical Mass is the standout choice.

Ash Green, founder of Dark Wizard Genetics and Bulk Seeds, has extensive first-hand experience growing both high-yielding and low-odour strains, and his Dark Wizard Genetics version of Critical Mass is a testament to how well those two traits can be combined.

It can produce approximately 650–750 g/m² indoors while maintaining a comparatively restrained cultivation aroma. Despite being an old-school classic, Ash still considers Critical Mass extremely difficult to beat when both heavy production and lower odour are priorities.

Best Low Odour High Yielding Strains Compared

Strain	Type	Indoor Yield	Flowering / Lifecycle	Odour
Critical Mass	Feminized	650–750 g/m²	8–9 Weeks	Low
Auto Northern Lights	Autoflower	500–600 g/m²	7–8 Week Lifecycle	Low
Northern Lights	Feminized	450–550 g/m²	7–8 Weeks	Low
Auto White Widow	Autoflower	450–550 g/m²	11–12 Week Lifecycle	Low
Blue Mystic	Feminized	350–450 g/m²	8–9 Weeks	Low

1. Critical Mass – Best Overall

Critical Mass takes first place because it combines genuinely heavy production with relatively restrained cultivation odour.

The Dark Wizard Genetics line combines Afghani and Skunk #1 genetics and can produce approximately 650–750 g/m² indoors. Flowering normally takes around 8–9 weeks, with indoor plants generally reaching 80–100 cm.

Critical Mass plants can develop exceptionally large, dense flowers without producing the same aggressive surrounding aroma associated with many Cheese, Dawg and fuel-heavy varieties. The smell tends more towards pine, herbs, pepper and earth.

Those large flowers do require sensible humidity management, particularly later in bloom, but for sheer yield versus odour, Critical Mass remains many growers first choice.

Best for: Maximum production with comparatively low cultivation odour.

2. Auto Northern Lights – Best Autoflower

Auto Northern Lights combines speed, strong production and discreet flowering particularly well.

This strain can produce approximately 500–600 g/m² indoors while completing its full lifecycle in around 7–8 weeks from germination.

One of its most noticeable characteristics was how small the plants remained even once flowering was fully established. Close to the end of flowering, the familiar sweet, earthy and pine aromas were easy to detect, but the smell around the grow remained far less potent than other strains.

Its biggest advantage is that discretion does not come at the expense of speed or production. It can still produce a substantial crop despite its remarkably short lifecycle.

Best for: Growers wanting a fast autoflower with strong yields and relatively low odour.

3. Northern Lights – The Classic Choice

Northern Lights has been associated with discreet indoor cultivation for decades.

This strain flowers in approximately 7–8 weeks and can produce around 450–550 g/m² indoors. Under favourable outdoor conditions, plants can potentially produce around 500–700 g each.

Most peoples experience with Northern Lights has been remarkably consistent. Growers often describe the plants as predictable, straightforward to manage and noticeably less intrusive in smell than many modern cultivars.

There is still some aroma directly around the flowers, particularly pine, earth, sweetness and woody notes, but it does not normally create the same overwhelming surrounding scent as louder varieties.

Critical Mass offers greater maximum production, but Northern Lights compensates with a shorter flowering time and particularly dependable growth.

Best for: A proven photoperiod strain balancing speed, consistency and respectable yields.

4. Auto White Widow – Best for Resin Production

Auto White Widow offers a slightly different combination of traits.

It can produce approximately 450–550 g/m² indoors and completes its full automatic lifecycle in around 11–12 weeks. Its main attraction is the combination of respectable yield, compact growth and heavy resin production.

Resin is the characteristic that stands out most when growing Auto White Widow. As the flowers develop, they take on the heavily frosted appearance associated with White Widow genetics, yet the surrounding cultivation aroma remains relatively restrained.

Earthy, pine and pepper notes are noticeable around the plants during the end of flowering, but many people do not place it in the same category as typical cannabis strains in terms of strong smells.

It cannot match Critical Mass for pure production, but it offers a more balanced package for growers interested in resin, potency potential and compact automatic growth.

Best for: Heavy resin production combined with moderate-to-high yields and lower odour.

5. Blue Mystic – Best for Compact Growth

Blue Mystic by Dark Wizard Genetics is the lowest yielding strain in this comparison, producing approximately 350–450 g/m² indoors.

That means it should not be presented as a direct rival to Critical Mass for outright production. Its strength lies elsewhere. Blue Mystic doesn’t just produce relatively little odour; Ash has found that the flowers can smell noticeably different from typical cannabis, with an unusual peppery character that some people may not immediately recognise as cannabis. This makes Dark Wizard Genetics’ version of Blue Mystic one of the most discreet low-odour strains on the market.

Blue Mystic plants generally stay around 60–100 cm indoors, show relatively little stretch and combine compact structure with low cultivation odour.

Some plants can also develop blue or violet shades later in flowering, although others remain predominantly green.

For somebody chasing the largest possible harvest, Critical Mass is clearly stronger. Blue Mystic makes more sense where compact growth and extra discretion carry greater importance.

Best for: Smaller spaces where controlled height and lower odour matter more than maximum yield.

Ash Green, founder of Bulk Seeds and Dark Wizard Genetics, has personally grown and assessed the strains featured in this guide. You can find these strains for sale, along with more detailed information, in the Bulk Seeds low odour cannabis strains category, which features genetics selected for more discreet cultivation.

Does Low Odour Mean No Smell?

No. A low-odour cannabis strain is still a cannabis plant, and mature flowers will still produce a noticeable aroma. Using a carbon filter can help remove this aroma.

The description is comparative. Lower-odour genetics tend to release a less intrusive smell into the surrounding environment than particularly pungent varieties.

It is also important to separate cultivation odour from finished flower aroma. A plant can remain relatively discreet while growing but still produce strongly aromatic flowers after harvest and curing.

Does Lower Odour Mean Lower Yield?

Not necessarily. Yield and cultivation odour are separate characteristics.

Critical Mass demonstrates this particularly well, combining low relative odour with indoor yield potential of approximately 650–750 g/m².

The five strains above simply balance their traits differently. Critical Mass prioritises maximum production, Auto Northern Lights combines yield with speed, Northern Lights provides consistency, Auto White Widow adds heavy resin production, and Blue Mystic favours compact growth.

UK legal note: Cannabis cultivation is controlled under UK law and generally requires the appropriate Home Office licence. Growers and businesses should check the latest UK Government guidance on cannabis licensing before undertaking any cultivation activity.