Mr Jack Mass - Mr Hide Seeds
  • Mr Jack Mass - Mr Hide Seeds
Mr Jack Mass - Mr Hide Seeds

Mr Jack Mass Feminized Seeds – Premium Sativa-Dominant Hybrid with Intense Tropical Aroma

star star star star star

Mr Jack Mass feminized seeds from Mr Hide Seeds are a powerful 60/40 sativa-dominant hybrid. A cross of Cinderella 99 and Critical Mass, it offers a unique tropical incense aroma, a potent cerebral yet relaxing effect, and impressive indoor yields of up to 600 g/m² (1.94 oz/ft²) in just 55 days of flowering. Perfect for SOG or SCROG, it's resistant and easy to grow.
 

100 day satisfaction guarantee

 

Discreet delivery worldwide

 

Unlimited cash on delivery

Urgent delivery in 24/48 hours  Urgent delivery in 24/48 hours
Buy
6.50€ taxes included
Available format
Quantity
  • Description
  • Data Sheet
  • Questions
  • Reviews
  • Delivery and Payment
Play Play Text to Audio Speaker

Mr Jack Mass feminized seeds are your ticket to a harvest that combines legendary genetics with a truly unique sensory experience. This sativa-dominant hybrid from Mr Hide Seeds is engineered for growers who demand exceptional aroma, high yields, and a balanced, powerful effect, all wrapped up in a surprisingly resilient and easy-to-manage plant.

Do you ever feel like your grow space is a gamble, where unpredictable plants and mediocre results leave you questioning your efforts? That uncertainty can turn a passion into a chore, making you feel like you're never quite in control of the final outcome.

This lack of control leads to frustration—wasted time, wasted nutrients, and harvests that don't live up to their potential. You're left with buds that are just "okay," lacking the explosive flavor and reliable potency you're truly after.

Mr Jack Mass is the solution bred for consistency and excellence. It's the result of meticulous selection, combining the soaring, creative high of Cinderella 99 with the robust structure and heavy yields of Critical Mass. This isn't just another seed; it's a guarantee of a standout harvest that puts you firmly back in the driver's seat.

More Discretion, Fewer Worries

While its aroma during the final weeks is intensely tropical and incensed, the plant's structure is a grower's dream for maintaining a low profile. Its well-branched, pine-tree shape with a prominent central cola allows for efficient use of space in a Sea of Green (SOG) setup, keeping your canopy even and manageable. This controlled growth means less stretching and fewer awkward, towering branches that are hard to conceal.

Furthermore, its noted resistance to common pests and moulds means you can avoid the panic and tell-tale signs of last-minute treatments. A healthy plant is a discreet plant. You can cultivate with confidence, knowing Mr Jack Mass has the genetic fortitude to handle minor environmental fluctuations without drama, leading to a smoother, more predictable grow cycle from start to finish.

Control Over the Experience

This strain hands you the reins. Its predictable nature and robust genetics allow you to tailor the grow to your exact goals.

  • Predictable Flowering: With a short, fixed flowering time of approximately 55 days indoors, you can plan your harvest schedule with precision, eliminating guesswork.
  • Training-Friendly Structure: Its strong branches and vigorous growth make it ideal for training techniques like SCROG (Screen of Green) to maximize light exposure and yield per square meter.
  • Stable Genetics: Bred for homogeneity, you can expect consistent results across multiple plants, ensuring every seed delivers on its promise.
  • Effect Customization: By monitoring trichome development, you can harvest earlier for a more cerebral, energetic high (milky trichomes) or later for a deeper, more relaxing stone (amber trichomes).
  • Yield Assurance: The potential for up to 600 g/m² (1.94 oz/ft²) indoors gives you control over your annual supply, reducing dependency and uncertainty.

How to Grow Responsibly and Comfortably

To unlock the full potential of Mr Jack Mass while maintaining a smooth operation, follow this straightforward guide.

  1. Start Smart: Germinate in a warm (22–25°C / 71.6–77°F), humid environment. Consider using a rooting gel to encourage a strong, healthy root system from day one, reducing transplant stress.
  2. Veg with Vigor: During the vegetative stage under an 18/6 light cycle, provide an airy, well-draining substrate. Water lightly but consistently, and employ Low-Stress Training (LST) early to build an even canopy and control height.
  3. Trigger Flowering: Switch lights to a 12/12 cycle to initiate flowering. Ensure good airflow and gradually lower humidity to 40-50% to prevent mould as the dense buds develop.
  4. Support and Feed: Install supports like yo-yos or a net as the heavy colas develop. In mid-flowering, a bloom booster can enhance bud density and resin production.
  5. Harvest with Patience: Flush with plain water for the final 7-10 days. Harvest when trichomes are mostly milky with some amber, depending on your desired effect. Dry slowly in a dark space at 18-22°C (64.4-71.6°F) and 50-60% RH, then cure for a minimum of 2-4 weeks.

Benefits of Having Everything Under Control

Choosing Mr Jack Mass transforms the growing experience from a hopeful experiment into a confident project.

  • Peace of Mind: Genetic stability and high resistance mean fewer surprises and problems.
  • Maximized Results: High yield potential and training responsiveness mean you get the most from your space and effort.
  • Sensory Reward: The guarantee of a unique, complex aroma and flavor profile makes the wait worthwhile.
  • Efficient Use of Time: The fast flowering cycle means you can achieve exceptional results quicker than with many other photoperiod strains.
  • Personal Satisfaction: There's a deep pride in cultivating a strain that performs exactly as advertised, batch after batch.

Technical Specifications

  • Breeder/Brand: Mr Hide Seeds
  • Type: Feminized Photoperiod
  • Dominance: 60% Sativa / 40% Indica
  • Genetics: Cinderella 99 x Critical Mass
  • Indoor Flowering Time: Approximately 55 days
  • Outdoor Harvest (Northern Hemisphere): Late September
  • Indoor Yield: Up to 600 g/m² (approx. 1.94 oz/ft²)
  • Outdoor Yield: Very High
  • Indoor Height: Medium to tall, responds well to training.
  • Difficulty: Easy (Suitable for beginners with basic knowledge)
  • Structure: Vigorous, well-branched with a pine-tree structure and large central cola.
  • Ideal Climate: Adaptable; resistant to bad weather and pests.
  • Training: Excellent for SOG and SCROG methods.
  • Recommended Pot Size: 11–20 L (2.9–5.3 gal) final pot for photoperiod.
  • Aromatic Profile: Intense and sweet, mixing incense, tropical fruit, and soft pine notes.
  • Flavour: A delicate blend of tropical fruits, incense, and pine.
  • Effect: Powerful, cerebral, and creative, followed by a deep sense of relaxation and wellbeing. Some phenotypes may contain THCV.

Frequently Asked Questions

Is Mr Jack Mass good for beginners?

Yes, its noted resistance to pests and moulds, combined with its robust growth and easy-to-manage structure, makes it a forgiving and rewarding choice for novice growers.

How do I control the plant's height indoors?

Employ Low-Stress Training (LST) during the vegetative stage to bend and tie branches, creating an even canopy. Switching to a 12/12 light cycle at the desired height will also limit further stretch.

What's the best way to enhance the aroma?

Using organic nutrients during the grow can intensify the final terpene profile. Proper drying and curing (low and slow) is crucial for preserving and developing the complex tropical and incense notes.

Is the effect too strong for daytime use?

While its initial effect is cerebral and creative, the relaxing body stone can be potent. Inexperienced users or those seeking a purely energetic high should start with small doses. Harvesting earlier (more milky trichomes) can produce a less sedative effect.

How do I maximize yield with this strain?

Its structure is perfect for SCROG (Screen of Green) training. Topping once during early veg and then using a SCROG net to spread the canopy will maximize light exposure to many bud sites, significantly increasing your final yield.

Personal Experience of Pevgrow’s CEO (Alan)

Mr Jack Mass holds a special place in my personal garden. It's the strain I turn to when I want a harvest that impresses on every level without demanding constant babysitting. The smell during the last three weeks is unreal—it doesn't just smell like "weed"; it fills the room with this exotic blend of sandalwood incense and overripe tropical fruit that's completely distinctive. In terms of growing, its vigour is impressive. I've found it performs brilliantly in a SCROG setup; the branches are strong enough to hold up those fat, resin-drenched colas without snapping. I typically let it veg for about 5 weeks under 18/6, then flip to 12/12. The stretch is manageable, and in just under 8 weeks, I'm looking at a forest of crystal-covered buds. The high is exactly as described: a fantastic, clear-headed creative buzz that slowly melts into a deeply satisfying physical relaxation. It's my go-to for a productive yet chilled evening. For the best results, don't overcomplicate the feed—it's not a heavy feeder—and make sure your carbon filter is up to the task for the final stretch!

You may also be interested in:
Jack Herer flowering time

Type: Type Feminized
Banks: Banks Mr Hide Seeds
Genetics: Genetics Cinderella 99 x Critical Mass
Phenotype: Phenotype Sativa Dominance (60%)
Harvest outdoor H.N: Harvest outdoor H.N Mid-October
Harvest outdoor H.S: Harvest outdoor H.S Mid-April
Indoor production: Indoor production 17.6-22.9 oz per 3x3ft
Outdoor production: Outdoor production 31.7-35.3 oz/plant
Indoor flowering period: Indoor flowering period 55-65 days
THC: THC High
CBD: CBD Unknown


  • Is the shipping discreet?

    Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.

  • Do you ship worldwide?

    Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.

    UK: 3-4 days (express)
    USA: 4-5 days (express)
    Australia: 4-5 days (express)
    Japan: 4-5 days (express)
    Canada: 4-5 days (express)
    South Africa: 4-5 days (express)
    New Zealand: 5-7 days (express)
    View all

    The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.

    We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.

    Due to problems with customs you can check here for restrictions to certain countries.

  • What payment methods and currencies do you accept?

    We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).

    You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.

  • How long does it take to ship my order?

    In 24/48 hours we will ship your order.

  • Are the seeds guaranteed to germinate?

    If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.

    If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.

    Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.

  • What if I receive a bad or damaged product?

    If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!

other products in the same category:
Customers who bought this product also bought:
Leave us your opinion or ask us any questions you have about this seed and participate in the raffle!

Among all those who comment or send us your questions, there will be a monthly raffle for a €50 voucher for your purchases at Pevgrow. What are you waiting for? Write us and participate!

Leave us your opinion or ask us any questions you have about this seed and participate in the raffle!
Write your comment or question for Mr Jack Mass Feminized Seeds – Premium Sativa-Dominant Hybrid with Intense Tropical Aroma
Have you tried it? Rate the product and leave your opinion.

Captcha
Only comments and doubts about the product please

We want to know your opinion and experiences about our products or help you with any doubts you may have about it. It helps us to improve and it can also help other customers to decide what to choose. That is why we have this great tool for commenting
Good luck commenting!


Aspects to consider

Why have you chosen this valuation?
What did you like about the product?
Would you recommend the product?
What did you think of the PevGrow service?