Indoor Seeds

Growing indoors in Thailand

Indoors, you decide the climate. That is worth more in Thailand than almost anywhere, because the outdoor climate here is difficult in ways that are hard to work around: humidity above 70% for most of the year, a monsoon that lands during what would otherwise be prime flowering months, and a day length that never gets long enough to keep a photoperiod plant in vegetative growth.

Twenty-one of the twenty-two strains in this catalogue are suited to indoor growing. The exception is a matter of habit rather than capability — every one of these will finish in a tent.

What indoors actually solves

Light schedule. Photoperiod strains flower when the dark period passes roughly eleven hours. Indoors you control that with a timer, which means you choose how large the plant is before it flowers instead of accepting whatever the latitude gives you.

Humidity. A dehumidifier in a sealed room is the difference between harvesting dense flowers and losing them to bud rot in the final fortnight. This is the single most common cause of failed grows in Thailand and the one indoor growing most directly fixes.

Heat. This is the part indoor growing makes harder, not easier. Ambient temperature in Bangkok sits near the top of the comfortable range before you add lights. Plan for extraction and, realistically, air conditioning. Above about 28°C terpenes volatilise and aroma thins; above 30°C growth slows and buds go airy.

Choosing a strain for a tent

For a short, high-turnover cycle, the eight-week finishers do well under a sea-of-green setup: Critical Orange Punch, Meringue, Mokum’s Tulip, HiFi 4G, Glueberry O.G., Banana Blaze and Power Plant. Small pots, short vegetative period, one main cola each.

For a larger plant under a screen, the nine- to ten-week sativa-dominant varieties — Amsterdam Amnesia, Skywalker Haze, Siam’s Smile, Tropical Tangie — stretch considerably after the switch to 12/12 and fill a screen well. Budget for roughly double the height they show at flip.

The six autoflowering strains are the least demanding option indoors, because they run on one light schedule from seed to harvest and need no switch at all.

A note on pot size

Indoor yields track root volume more closely than most new growers expect. Four to eleven litres suits a sea-of-green; a single screened plant wants more. Autoflowers should go into their final pot immediately, since they have no vegetative period in which to recover from a transplant.