Permanent Whitemarker Auto is an Indica-dominant powerhouse from Growers Choice, bred from Permanent Marker BX1 x White Truffle. Permanent Marker is one of the most talked-about modern American strains, and the BX1 (backcross) version locks in its traits more firmly. White Truffle adds a dense, frosty, Gorilla-derived structure.
The genetics are 70% Indica / 30% Sativa, and Growers Choice lists THC at 30%+. That puts this autoflower in the very top tier for potency, so it is clearly aimed at experienced consumers.
It is also built to produce. Plants reach 100–130 cm (39–51 in) indoors and 100–150 cm (39–59 in) outdoors, with indoor yields listed at 750+ g/m² (2.46+ oz/ft²) and outdoor harvests of 750+ g/plant (26.5+ oz/plant). Outdoors, plants are typically ready at the beginning of October.
Flavor and Effects of Permanent Whitemarker Auto
Growers Choice does not publish an official flavor profile for this cross. Based on the parents, expect a loud, funky nose: Permanent Marker is known for a sharp, almost inky blend of gas, sweet candy and floral notes, while White Truffle tends toward earthy, savory depth.
In practice that suggests a layered smoke that is sweet and pungent on the inhale, with an earthy, slightly savory finish. Individual plants will vary, so the jar of each phenotype will tell its own story.
The effect follows the 70% Indica lean. The breeder describes it as suited both to unwinding on lazy afternoons and to sparking creative ideas during the day: a heavy, settling body feel with enough mental spark to keep you engaged. With 30%+ THC, small doses go a long way.
Growing Permanent Whitemarker Auto Indoors and Outdoors
Permanent Whitemarker Auto flowers on its own, so there is no light switch. Run 18/6 or 20/4 lighting for the whole cycle; Growers Choice lists about 11 weeks indoors from seed to harvest.
This is a taller auto than most, reaching up to 130 cm (51 in) indoors, so plan for vertical space. Sow into a large final container, around 15–20 L (4–5 gal), to support the heavy yield, and use LST early to spread the canopy and keep height in check. High mold resistance helps when the dense Indica buds swell late in flower, but keep airflow strong. Outdoors, aim for a sunny spot and a harvest window around the beginning of October.
Indoors versus outdoors is mostly a question of space. Inside, a few well-trained plants can fill a tent and push past 750 g/m² (2.46 oz/ft²). Outside, with full sun and room for roots, single plants are listed at 750+ g (26.5+ oz), making this one of the most productive autos in the Growers Choice lineup.
Permanent Whitemarker Auto Characteristics
| Strain type | Feminized autoflower |
| Genetics | Permanent Marker BX1 x White Truffle |
| Indica/Sativa | 70% Indica / 30% Sativa |
| THC | 30%+ |
| Effect | Relaxing body, creative spark |
| Indoor yield | 750+ g/m² (2.46+ oz/ft²) |
| Outdoor yield | 750+ g/plant (26.5+ oz/plant) |
| Seed to harvest | About 11 weeks indoors |
| Outdoor harvest | Beginning of October |
| Height | Indoor: 100–130 cm (39–51 in); outdoor: 100–150 cm (39–59 in) |
| Mold resistance | High |
| Best cultivation technique | Early LST, large container; 18/6 or 20/4 light |
FAQ
Is Permanent Whitemarker Auto Indica or Sativa?
It is Indica-dominant, with a 70% Indica / 30% Sativa genetic split.
What are the parents of Permanent Whitemarker Auto?
Growers Choice crossed Permanent Marker BX1 with White Truffle.
How strong is Permanent Whitemarker Auto?
The breeder lists THC at 30%+, which makes it one of the strongest autoflowers in the range.
How much does Permanent Whitemarker Auto yield?
Growers Choice lists 750+ g/m² (2.46+ oz/ft²) indoors and 750+ g (26.5+ oz) per plant outdoors.
How tall does Permanent Whitemarker Auto grow?
Expect 100–130 cm (39–51 in) indoors and 100–150 cm (39–59 in) outdoors, so leave some headroom.
When is Permanent Whitemarker Auto ready outdoors?
Outdoor plants are typically ready at the beginning of October. Indoors, the breeder lists about 11 weeks from seed.
