Jack 47 XL Auto^® (SWS78) Grow Diary

The feminized and autoflowering strain Jack 47 XL Auto^® is one of the most potent genetics you can find.

This highly appreciated strain is the tall-stemmed version of one of the favorite autoflowering strains of many growers, the famous Jack 47 Auto^® (SWS31).

Jack 47 XL Auto^® (SWS78) is born from a recurrent selection program, during multiple generations, of tall-stemmed and high yield specimens of Jack 47 Auto^®.

The flowers are very potent, sweet and fresh. They have such a special and delicious taste that it is even difficult to describe. It features the typical effect of Sativa strains, perfect to use when you want to perform your daily activities with a smile on your face.

Data Sheet:

• • • • Variety: SWS78
      • Indica: 20%
      • Sativa: 76,9%
      • THC: 18-21%
      • CBD: 0,1%
      • Indoor Yield: 475-600 g/m²
      • Outdoor Yield: 60-200 g/plant
      • Indoor/Outdoor Harvest: 9 weeks from germination
      • Height: 65-130 cm

Grow parameters:

• • • • Type of growing: Indoor
      • Gardener: Nickeluring
      • Technique used: LST, apical pruning, defoliation.
      • Number of plants: 1
      • Vegetative: 5 weeks
      • Flowering: 8 weeks
      • Total culture weeks: 13 weeks

Week 1 – Growing

Grow parameters:

• • • • Air humidity: 60%
      • Temperature: 27ºC
      • pH: 7.2
      • Pot size: 11 L
      • Height: 1 cm

Nutrients supplied:

• • • • 1 ml/l pH Perfect Sensi Coco Grow A
      • 1 ml/l pH Perfect Sensi Coco Grow B
      • 2 ml/l B-52
      • 4 ml/l Canna Rhizotonic

After successful germination, the seed was planted. Although it was planted late in the season, the good sunny weather invited me to take the plant outdoors for the first two weeks.

Week 2 – Growing

Grow parameters:

• • • • Air humidity: 60%
      • Temperature: 27ºC
      • pH: 7.2
      • Pot size: 11 L
      • Height: 2 cm

Nutrients supplied:

• • • • 1 ml/l pH Perfect Sensi Coco Grow A
      • 1 ml/l pH Perfect Sensi Coco Grow B
      • 2 ml/l B-52
      • 4 ml/l Canna Rhizotonic

During the second week everything went well despite a few days with bad weather including rain. The plant was protected so there was no problem whatsoever.

The was watered with 0.25 litres of water with a pH of 7.2.

Week 3 – Growing

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 27ºC
      • pH: 7.2
      • Pot size: 11 L
      • Height: 6 cm

Nutrients supplied:

• • • • 1 ml/l pH Perfect Sensi Coco Grow A
      • 1 ml/l pH Perfect Sensi Coco Grow B
      • 2 ml/l B-52
      • 4 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,2 ml/l Cal-Max

By the third week my Jack 47 XL Auto^® was moved indoors.

A 600W LED lamp is used for 18 hours per day. Watering is increased to 1 litre and the plant is watered every 24 hours.

By day 21, after observing an increase in her growth rate I decided to perform an Apical Pruning.

Week 4 – Growing

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 27ºC
      • pH: 7.2
      • Pot size: 11 L
      • Height: 10 cm

Nutrients supplied:

• • • • 1 ml/l pH Perfect Sensi Coco Grow A
      • 1 ml/l pH Perfect Sensi Coco Grow B
      • 2 ml/l B-52
      • 4 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,2 ml/l Cal-Max

As you can see in the pictures, my Jack 47 XL Auto^® kept growing without any problems.

On day 25 the LST technique was applied.

Humidity is maintained at 60% and pH at 7.2.

Week 5 – Growing

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 27ºC
      • pH: 7.2
      • Pot size: 11 L
      • Height: 37 cm

Nutrients supplied:

• • • • 1,5 ml/l pH Perfect Sensi Coco Grow A
      • 1,5 ml/l pH Perfect Sensi Coco Grow B
      • 1 ml/l B-52
      • 2 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 2,5 ml/l Cannazym

The plant gained a lot of strength and noticeably began to grow. It started to flower and I applied some defoliation technique.

The space in the indoor area was improved. 4 plants were removed so now my Jack 47 XL Auto^® has more growing space.

Week 6 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 27ºC
      • Pot size: 11 L
      • Height: 37 cm

Nutrients supplied:

• • • • 0,5 ml/l pH Perfect Sensi Coco Grow A
      • 0,5 ml/l pH Perfect Sensi Coco Grow B
      • 1 ml/l pH Perfect Sensi Coco Bloom A
      • 1 ml/l pH Perfect Sensi Coco Bloom B
      • 1 ml Bud Candy
      • 1,5 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 1,7 ml/l Cannazym

The yield of the plant is spectacular, you can already have an idea of the final structure of the flowers.

Feeding was changed to the flowering mix.

Week 7 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 27ºC
      • Pot size: 11 L
      • Height: 85 cm

Nutrients supplied:

• • • • 2 ml/l pH Perfect Sensi Coco Bloom A
      • 2 ml/l pH Perfect Sensi Coco Bloom B
      • 1 ml Bud Candy
      • 1 ml/l B-52
      • 1 ml/l Nirvana
      • 1 ml/l Big Bud
      • 1 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 1,2 ml/l Cannazym

On the tenth day of flowering this Jack 47 XL Auto^® is already showing all its Sativa traits.

She is now filled with buds and started to stretch in all the available space.

The defoliation technique was applied and the same watering schedule (1 litre per day) was continued.

Week 9 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 29ºC
      • Pot size: 11 L
      • Height: 106 cm

Nutrients supplied:

• • • • 2 ml/l pH Perfect Sensi Coco Bloom A
      • 2 ml/l pH Perfect Sensi Coco Bloom B
      • 1 ml Bud Candy
      • 1 ml/l B-52
      • 1 ml/l Nirvana
      • 1 ml/l Big Bud
      • 1 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 1,25 ml/l Cannazym

By the 22nd day of flowering the plant kept developing abundant buds.

The aroma is penetrating and delicious.

The plant used all the space available in the indoor area, so it looks very comfortable and growing at ease.

The amount of watering was increased to 3 litres per day.

Week 10 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 29ºC
      • Pot size: 11 L
      • Height: 106 cm

Nutrients supplied:

• • • • 2 ml/l pH Perfect Sensi Coco Bloom A
      • 2 ml/l pH Perfect Sensi Coco Bloom B
      • 1 ml Bud Candy
      • 1 ml/l B-52
      • 1 ml/l Nirvana
      • 1 ml/l Big Bud
      • 1 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 1,25 ml/l Cannazym

NIn the tenth week of flowering the pot was raised to get the plant closer to the light bulb.

It is full of flowers and looks sticky with lots of resin. The aromas at this stage are amazing.

The amount of watering was increased to 4 litres per day.

Week 11 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 29ºC
      • Pot size: 11 L
      • Height: 106 cm

Nutrients supplied:

• • • • 2 ml/l pH Perfect Sensi Coco Bloom A
      • 2 ml/l pH Perfect Sensi Coco Bloom B
      • 1 ml Bud Candy
      • 1 ml/l B-52
      • 1 ml/l Nirvana
      • 1 ml/l Big Bud
      • 1 ml/l Canna Rhizotonic
      • 0,3 ml/l Liquid Silicon
      • 0,3 ml/l Cal-Max
      • 1,25 ml/l Cannazym

This week the buds and their sticky resin anticipate a more than exquisite and delicious harvest.

The plant is watered for the last time with fertilizers. Next week there will be adjustments in the feeding schedule.

Week 12 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 29ºC
      • Pot size: 11 L
      • Height: 106 cm

Nutrients supplied:

• • • • 2 ml/l Flawless Finish

By the sixth week of flowering the buds are surprisingly fat.

The plant became quite heavy, so several of its buds were tied with twine to reinforce and help the plant.

At this point there is no doubt how delicious this Jack 47 XL Auto^® will be.

The aromas can already be felt in the mouth.

The nutrients were changed to only 2 ml of Flawless Finish.

Week 13 – Flowering

Grow parameters:

• • • • Light: 18 hs. LED 600w
      • Air humidity: 60%
      • Temperature: 29ºC
      • Pot size: 11 L
      • Height: 106 cm

Nutrients supplied:

• • • • 2 ml/l Flawless Finish

Last week of flowering before harvest. The plant has a total cycle of 51 days. The 52nd day will be harvest day.

Jack 47 XL Auto^® is incredible, featuring very big buds, really fat and full of resin.

The sweet aroma of this plant makes you hallucinate.

week 14 – Harvest

This girl delivered a sweet and tasty harvest of 218 grams. The buds are very potent. I am very happy with the results!

The taste is very special, deliciously sweet and fresh. I do my best to describe it, but it’s very difficult. It is so good that I decided to grow its ancestors (Jack Herer and AK47) to find out where these delicious traits come from.

As for the effects, they are typical of Sativa strains.

¡Jack 47 XL Auto^® is perfect for every day!

The final result:

• • • • Number of plants harvested: 1
      • Flavor: Fruity, Tropical, Woody.
      • Dry weight 218 gr
      • Positive effects: Energy, Euphoria, Haze, Laughable.
      • Negative effects: Dry mouth.

Sweet Seeds S.L is not responsible for the misuse of the information contained in this article. Cultivation of cannabis may constitute a criminal offence or administrative misdemeanour; please refer to the legislation on cannabis in your place of residence. Sweet Seeds S.L. does not intend in any case to incite non-legal practices.