Fast flowering seeds

Eight weeks, and why that is the number

Fast flowering seeds finish flowering in roughly eight weeks instead of the ten to twelve a slower variety needs. In a temperate climate that mostly saves impatience. In Thailand it saves crops.

The reason is humidity. Thai relative humidity sits above 70% for much of the year and climbs higher through the monsoon. Dense cannabis flowers hold moisture in their core, and Botrytis — bud rot — takes hold in exactly those conditions, usually in the last three weeks of flowering when the buds are at their densest and most valuable. A plant that finishes in eight weeks spends four fewer weeks in that window than one that takes twelve. That is the whole argument, and it is a good one.

The same logic applies to outdoor timing. Eight weeks of flowering is short enough to fit a run between monsoon peaks, or to start late and still finish inside the cool dry season from November to February.

The seven strains

• Banana Blaze — indica, high THC, eight weeks, XL yield. Afghani Kush lineage, compact.
• Critical Orange Punch — hybrid, high THC, eight weeks, XXL yield. The heaviest yielder in the group.
• Frisian Dew — hybrid, high THC, eight weeks, XXL yield. Bred for outdoor resilience and mould resistance.
• Glueberry O.G. — hybrid, very high THC, eight weeks, XL yield.
• HiFi 4G — hybrid, extremely high THC, eight weeks, XL yield.
• Meringue — hybrid, extremely high THC, eight weeks, XL yield.
• Mokum’s Tulip — hybrid, extremely high THC, eight weeks, XL yield.
• Sugar Bomb Punch — indica, extremely high THC, nine weeks, XXL yield.

Four of these sit in the extremely high THC band, which is worth noting because speed and potency used to be a trade-off. In this group they are not.

What speed does not fix

A fast finish reduces the time available for mould; it does not make a plant immune. Dense indica-structured buds like Sugar Bomb Punch still need airflow, and in a Thai greenhouse or balcony grow that usually means a fan and enough spacing that plants are not touching. Frisian Dew is the one bred specifically for wet conditions, and it is the sensible first choice for an unprotected outdoor grow.

Defoliating lightly around the main colas in weeks four and five helps more here than it would in a drier climate.