Devil Jack XL Auto


Devil Jack XL Auto is an autoflowering variety easy to grow, fast and very productive for being a plant that reaches a large size, up to 160 cm. In only 9-10 weeks from germination you will be harvesting large, super compact and especially resinous buds. Its aromas have sweet citrus hints of lemon and incense reminiscent of its ancestor Jack Herer. The effects are potent and balanced, they will keep you energetic and happy while a great relaxation will possess your mind.

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Devil Jack XL Auto is a bulk autoflowering that always surprises the grower. It’s simple, tough and super-productive, something anyone appreciates.

It is an Indica/Sativa cannabis strain from a careful selection looking for the fastest, biggest and most productive phenotypes of Bid Devil XL Auto from Sweet Seeds.

In its family tree you can find genes from the legendary Jack Herer from Sensi Seeds, one of the best Haze hybrids ever created and winner of multiple awards.

How to grow Devil Jack XL Auto

It is a really simple plant that does not pose any challenge to the grower. It is not the most discreet autoflowering, since it reaches 160 cm in height. But it is undoubtedly one of the most productive that you can find.

This type of autoflowering cannabis strains all have the same behavior. They grow for 3-4 weeks, and then begin to flower regardless of the number of hours of light they receive.

During this initial phase it is advisable to give the plants all the facilities to develop quickly and without interruption. Opt for a very good substrate and a large pot from the very beginning. Transplants are stressful and can slow growth for a few days, so avoid them.

From germination to harvest you only have to wait 9-10 weeks. Since it is so fast, 2 crops can be grown throughout the outdoor season. Even 3 can be made in areas where the month of October is dry.

Characteristics of Devil Jack XL Auto

The buds are fat, heavy and mega-resinous. Its Skunk genes make it necessary to have a good anti-odor system indoors.

It has an aroma and flavor with clear citrus notes of lemon that blend perfectly with the incensed touches so typical of Haze.

The effects are powerful and after a few puffs there will be a burst of energy and happiness that will make your whole body vibrate. Over time the sensations become relaxing.

Yields are very high. Outdoors, plants taller than 150 cm can produce up to 300 grams of dry buds. Indoors and with LED lighting of 300-350W per m² do not expect less than 450 grams.

What we like the most

  • Very easy to grow.
  • XXL production.
  • It is harvested in only 9-10 weeks.
  • Citric lemon flavor.
  • Powerful effects.
  • Price.

What we like least

  • In bloom it produces a very intense odor.

Frequently Asked Questions

If you have any questions about these cheap seeds, we answer the most frequently asked questions below:

When does Devil Jack XL Auto start flowering outdoors?

The growth period is very fast. About 3-4 weeks after germination, the plants begin to flower.

How long does it take to harvest a Devil Jack XL Auto from germination?

It is a very fast plant that is harvested in 9-10 weeks from germination.

How to grow a feminized Devil Jack XL Auto?

It is a very easy plant and perfect for beginners. Use a large pot and a good substrate and you will obtain plants that exceed one and a half meters in height.

What are the effects of Devil Jack XL Auto in bulk?

The effects are happy and energetic, with a very pleasant and relaxing finish.

Additional information




Indica / Sativa


Big Devil XL Auto



Recommended crop

Interior and exterior

Full life cycle

Short: less than 75 days



Indoor production

450-550 g/m2

Outdoor production

150-300 g/plant

Outdoor height

1,2-1,6 m

Aromas and flavours

Citrus, Incense, Lemon


Energy, Happiness, Relaxation


15% – 20%


Low: < 1%.


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