think big auto dutch passion

Think Big indoor grow review

If you want reliable XXL harvests and one of the strongest smokes in the Dutch Passion collection then try our new auto Think Big. This weeks Think Big indoor grow review from ‘Tdam’ shows the numerous chunky blooms that make this one of our heaviest yielding autos.

Think Big indoor grow review

Think Big is a carefully selected auto genetic line with a really strong smoke. Best results for yield and potency come if the plant is allowed a full 13-14 weeks from seed to harvest. Most growers use a 20/4 light schedule from start to finish (20 hours of daily light, followed by 4 hours of darkness). Some experienced home growers cultivate Think Big under 24 hour daily light (no ‘lights off’ rest period), however this may lead to Calcium/Magnesium deficiencies which could be tricky to correct for inexperienced growers. For that reason many home growers prefer to grow Think Big under a 20/4 light schedule.

Initial growth

Unusually for a modern high-yielding auto, Think Big tends to stay around or below 1 metre in size. The initial growth, over the first 5-6 weeks may seem slow. During this time Think Big is preparing to produce multiple blooms, to do this she needs to grow a bushy structure with more side branching than usual and a larger root ball than normal. This takes time, and is one reason why Think Big takes 13-14 weeks. The sativa dominant genetics have a flash of Haze in them, this helps make Think Big one of the most potent smokes in our collection. As many home growers will know, these sativa genetics may take a couple of weeks extra to bloom, but the results are definitely worth the wait.

Home growers & high yields

Think Big will not tend to grow as tall as our other heavy yielding autos such as AutoXtreme and AutoUltimate. This is all part of the Think Big genetic selection, which is optimised towards potency and heavy yields. Think Big is ideal suited to home growers looking for heavy yields whilst retaining a compact and manageable hight for their grow room.

Tdam grew Think Big in soil under 600W HPS lights with highly impressive results, the original grow diary is here on the autoflower network. One of the more impressive aspects of Tdams grow is the consistency of the plants throughout the grow. All of the Think Bigs have the characteristic swollen blooms, and all are roughly the same size and appearance.

Easy to grow

The Think Bigs are easy to grow and their medium hight (typically a metre or less) makes this an easy variety to manage in your grow room without compromising either yield or quality. Sometimes the larger ‘stretchier’ autos need LST (tying down with string etc) in order to keep the grow room manageable. Think Big delivers a heavy harvest with a compact structure and an uncomplicated growing style. This is an easy variety to grow, the only real downside to the Think Big variety is the need to be patient for the full 13-14 weeks to get the most from her. But if you are patient this is an ideal variety to select if you want to exceed a gram-per-watt, even from HPS lighting.

Nutrient concentration can be slowly increased as the Think Big gets older. Most growers prefer to feed pure water, known as ‘flushing’ for the last week before harvest. Many feel that this improves the flavour and smoothness of the final vape/smoke and allows the plants to be flushed free of excess residual minerals from the nutrients.

Think Big is one of our more stable auto varieties with good levels of predictable and consistent growth. This is the variety to choose if you have high light levels in your grow room and want an auto variety that will is capable of producing a harvest to match the light intensity. And remember to be patient, a full 13-14 week grow is required to allow the blooms to swell to the maximum size and reach full potency.

All in all this was one of the most impressive and efficient soil/HPS grows we have seen with Think Big. Tdam ensured the plants had plenty of root space, some good quality soil and regular feeding. The intense light levels allowed the Think Big genetics to do the rest. Think Big is an unusual genetic line in our auto collection, and one which comes with our highest recommendations.

This Think Big indoor grow review from ‘Tdam’ shows the numerous chunky blooms that make this one of our heaviest yielding autos.

Think big auto dutch passion

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  • Think Big Auto Feminised Seeds


The Think Big® Auto takes the XXL Think Different genetics and turns it into a turbo-charged auto-flowering cannabis variety. Several XXL Think Different plants were selected from the hundreds that were grown out before having magic Ruderalis dust sprinkled on it.

Auto Think Big is a sativa-dominant weed strain that grows bigger, taller and takes two weeks or so longer to finish than the original Think Different. It will do well indoors and outdoors as well as in a greenhouse reaching a height of about 150 cm. give or take. If well-cared for and in good conditions it can produce XXL yields of highly resinous buds in a total growing time of 13 – 14 weeks from initial germination.

This weed has a lovely fresh, lemon citrus aroma with notes of mysterious incense. The effect is very strong and produces a soaring, euphoric sativa-type high which also has a numbing effect which can be useful therapeutically for pain and stress relief.


Breeder/Brand Dutch Passion
Genetics Selected XL Think Different plants
Variety Mostly Sativa
Flowering Type Autoflowering
Sex Feminised
Yield XXL Yield
Plant Height 1.5 meters
Grows Greenhouse, Indoors, Outdoors
Flowering Time 14 weeks
Medical Conditions Pain, Stress
Medicinal Properties Yes
Taste / Flavour Citrus, Lemon
Effect Cerebral, Euphoric, Long-lasting, Strong, Uplifting

About Dutch Passion

“You don’t buy that many seeds a year, it’s one area of your life where compromise isn’t necessary so choose a seed bank with a long tradition and proven record”Dutch Passion

In the 1970’s, Dutch Passion’s founder, Henk van Dalen, began collecting and breeding with cannabis seeds which he found in the early Dutch cannabis imports arriving from all over the world. He realised that it was possible to grow your own cannabis and often it was far superior to the often poor-quality, heavily seeded, imported product.

Some of his best varieties were selectively crossed and bred and he soom realised that many people would prefer to grow their own cannabis from seed rather than buy it on the streets.

In 1987, the Dutch Passion Seed Company was formally established. 10 years later, they became the first seed bank to learn how to make feminized seeds, something that many people at the time said was impossible with cannabis. Ever since then, Dutch Passion have been busy trying to create the best cannabis seeds and trying to keep up with customer interest in other varieties of seeds such as autoflowering and CBD-rich etc.

Dutch Passion grow from their own gene bank of original genetics collected decades ago, These days, many newer seed banks simply regurgitate existing varieties/genetics and put a new name on them. Dutch Passion are both proud and fortunate to have their own legendary varieties from the 1980’s and plenty of old original seeds to use for future projects.

Crowned Best Seed bank at Spannabis 2014, Dutch Passion are well known for their sophistication and quality. The Dutch Passion breeders concern themselves with creating and preserving quality, and their varieties have won many prizes in cannabis cup competitions.

Think Big Auto Feminised Seeds from Dutch Passion for sale at Seedsman Shop Online. Get Free seeds with every order. Offering the best seeds since 2003. ]]>