Permanent Marker
Cannabis seeds
by Azarius
Permanent Marker Cannabis Seeds
Permanent Marker is a feminized cannabis seed strain that crosses Biscotti x Sherb Bx with Jealousy, delivering a 75% Indica / 25% Sativa hybrid crowned Strain of the Year in 2023. With THC levels ranging from 26–30%, this modern American genetic produces dense, resinous buds with a flavour profile that genuinely smells like opening a fresh Sharpie — pungent, gassy, and oddly sweet. Available in packs of 1, 3, 5, or 10 seeds.
Which Pack Size?
| Pack | Best For |
|---|---|
| 1 seed | Single-plant growers or a test run before committing |
| 3 seeds | A small indoor tent — enough to pick the best phenotype |
| 5 seeds | The sweet spot for most home growers. Room for selection, spare seeds for next season |
| 10 seeds | Pheno-hunting or filling a larger grow space. Best value per seed |
We'd pick the 5-pack for most setups. Three seeds gives you a decent shot at finding a standout pheno, but five means you've got backup if germination isn't 100% — and it rarely is, no matter what anyone tells you.
Permanent Marker Genetics and Lineage
Permanent Marker feminized seeds carry genetics from three heavy-hitting American strains: Biscotti, Jealousy, and Sherb Bx. The cross was developed in the USA and quickly gained recognition, earning Strain of the Year in 2023 — which doesn't happen to forgettable genetics. The 75% Indica backbone comes through in the plant's structure: compact, bushy growth with tight internodal spacing and thick, frosted colas. The 25% Sativa contribution adds just enough stretch and vigour to keep things interesting during flower.
Biscotti brings the cookie-dough sweetness and dense bud structure. Jealousy adds the gassy punch and resin production that makes your trim scissors unusable within an hour. Sherb Bx rounds it out with that creamy, sherbet-like flavour layer. The result is a plant that stacks trichomes like it's getting paid per head.
| Genetic Detail | Specification |
|---|---|
| Cross | Biscotti x Sherb Bx x Jealousy |
| Type | Feminized photoperiod |
| Indica / Sativa | 75% / 25% |
| THC Range | 26–30% (up to 35% reported in optimal conditions) |
| Origin | USA |
| Award | Strain of the Year 2023 |
| Dominant Terpenes | Myrcene (30%), Limonene (20%), Caryophyllene (15%) |
Flavour and Aroma of Permanent Marker
Permanent Marker smells exactly like its name suggests — open the jar and you get that sharp, chemical-sweet hit of a freshly uncapped Sharpie. It's pungent, unmistakable, and genuinely unlike most other strains on the market. Behind that initial marker-pen blast, there are layers of floral sweetness, a soapy candy note, and a deep gassy undertone that lingers in the room long after you've sealed the bag.
The flavour follows the nose closely. Myrcene leads at roughly 30% of the terpene profile, giving a herbal, slightly musky base. Limonene at 20% adds citrus brightness — think lemon zest folded into cookie dough. Caryophyllene at 15% brings a peppery, spicy edge that hits the back of the throat. The remaining 35% is a mix of minor terpenes that fill in the gaps with floral and earthy notes.
Honest take: the smell is divisive. Some people absolutely love the funky, industrial-sweet aroma. Others find it a bit confronting on first encounter. If you're growing indoors, a carbon filter isn't optional — this one announces itself through walls. But if you're after something that stands out from the endless cookie and gelato crosses flooding the market, Permanent Marker is genuinely distinctive. We've had customers come back specifically because they couldn't find anything else that smelled like this.
Growing Permanent Marker Feminized Seeds
Permanent Marker feminized seeds produce plants that lean heavily Indica in structure — expect a bushy, compact plant with strong lateral branching and dense flower sites. The 75% Indica genetics mean she won't stretch excessively during the flip, which makes her manageable in tents from 80x80cm upward. That said, the Sherb Bx parentage can throw the occasional taller phenotype, so leave yourself 30–40cm of headroom above the canopy at flip.
- Germinate seeds using the paper towel method or directly in a starter plug. Permanent Marker germinates reliably — we'd expect 90%+ with proper moisture and warmth (22–25°C).
- Veg for 3–5 weeks depending on your space. She bushes out naturally, so topping once above the 4th or 5th node opens up the canopy nicely for even light distribution.
- LST (low-stress training) works brilliantly here. Tie down the main stem early and the lateral branches will race to catch up, giving you a flat, even canopy that makes the most of your light.
- Flip to 12/12 when the canopy fills roughly 70% of your tent footprint. She'll stretch 30–50% during the first two weeks of flower.
- Support the colas from week 5 of flower onward. The buds get heavy and dense — unsupported branches will lean and snap. Bamboo stakes or a trellis net are your friends here.
- Watch humidity closely in late flower. Dense Indica buds plus high resin production equals mould risk if you let RH creep above 50% in the final weeks. Keep airflow moving through the canopy.
- Harvest when trichomes show mostly milky with 10–20% amber. Dry slowly at 18–20°C and 55–60% RH for 10–14 days, then cure in jars for at least two weeks. The terpene profile genuinely improves with a proper cure — rushed drying kills that signature marker-pen smell.
The one limitation worth knowing: Permanent Marker can be hungry during flower. She responds well to heavy feeding in weeks 3–6 of bloom, particularly phosphorus and potassium. If you're growing in living soil, top-dress with bat guano or bone meal before the flip. In coco or hydro, bump your PK levels from week 3 and watch for any signs of nitrogen toxicity (dark, clawing leaves) — she doesn't need much N once flowering kicks in.
Why Permanent Marker Stands Out
We carry a lot of feminized seeds. Dozens of strains, many of them excellent. So why does Permanent Marker keep selling? Because it's genuinely different. In a market saturated with Gelato crosses and Runtz variants that all taste vaguely similar, Permanent Marker has an aroma and flavour profile that people remember. That funky, chemical-sweet, gassy signature is polarising in the best way — it's a conversation starter, not background noise.
The THC content is serious. At 26–30% average, with some growers reporting phenotypes testing above 33%, this isn't a strain for casual consumption. The effects are reported as deeply relaxing with a creative mental edge — the Indica dominance brings physical weight while the Sativa quarter keeps the mind active. Research from strain review databases suggests users commonly describe the onset as a creeping body relaxation paired with sharpened sensory awareness, typically lasting 2–4 hours depending on dose and tolerance.
Compared to something like Wedding Cake or Gelato 33 — both solid Indica-dominant choices — Permanent Marker offers a more complex terpene profile and noticeably higher resin production. If you're pressing rosin or making extracts, the trichome density on a well-grown Permanent Marker plant is exceptional. The buds practically glue your fingers together during trim.
Complete your grow setup with a Dark Box grow tent for light-tight cultivation, and grab a carbon filter — Permanent Marker's pungent aroma will fill your entire flat without one. If you're pressing the harvest into rosin, a pollen press pairs well with this strain's heavy trichome production.
Permanent Marker Specifications
| Specification | Detail |
|---|---|
| Strain Name | Permanent Marker |
| Seed Type | Feminized (photoperiod) |
| Genetics | Biscotti x Sherb Bx x Jealousy |
| Indica / Sativa | 75% / 25% |
| THC Content | 26–30% (up to 35% in optimal conditions) |
| Dominant Terpenes | Myrcene (30%), Limonene (20%), Caryophyllene (15%) |
| Aroma | Pungent marker pen, floral, soapy candy, gassy |
| Flavour | Creamy sweet, citrus, herbal, gassy undertone |
| Plant Structure | Compact, bushy, strong lateral branching |
| Difficulty | Intermediate |
| Award | Strain of the Year 2023 |
| Pack Sizes | 1, 3, 5, or 10 seeds |
Frequently Asked Questions
Is Permanent Marker suitable for beginner growers?
She's manageable but not the easiest first grow. The dense bud structure demands good humidity control in late flower, and she feeds heavily during bloom. If you've done one or two grows and understand basics like VPD and nutrient scheduling, you'll be fine. True beginners might find a more forgiving strain like Northern Lights less stressful.
What does Permanent Marker smell like during flowering?
Loud. From week 4 of flower onward, she fills the room with a sharp, chemical-sweet scent genuinely reminiscent of a Sharpie marker. Gassy and floral undertones build as the buds mature. A carbon filter is non-negotiable for indoor grows — without one, your neighbours will know exactly what you're up to.
How long do the effects of Permanent Marker typically last?
Effects typically last 2–4 hours, depending on dose, tolerance, and method of consumption. The onset is often described as creeping — building over 15–20 minutes before settling into full effect. With THC levels of 26–30%, starting with a single puff and waiting is the sensible approach.
What THC percentage does Permanent Marker produce?
Permanent Marker typically tests between 26–30% THC, with some phenotypes reaching up to 35% under optimal growing conditions. This puts it firmly in the high-potency bracket. The exact percentage depends on phenotype, growing environment, and how well you dial in the feeding schedule during flower.
How does Permanent Marker compare to Gelato or Wedding Cake?
All three are Indica-dominant with high THC, but Permanent Marker has a distinctly different terpene profile — that funky marker-pen aroma sets it apart from the sweeter, more dessert-like flavours of Gelato and Wedding Cake. Resin production on Permanent Marker is also notably higher, making it a stronger choice for extract makers.
What are the dominant terpenes in Permanent Marker?
Myrcene leads at 30%, providing herbal and musky notes. Limonene follows at 20% with citrus brightness. Caryophyllene at 15% adds peppery spice. The remaining 35% is a mix of minor terpenes contributing floral and earthy layers. This combination creates the strain's signature gassy-sweet profile.
Can I grow Permanent Marker in a small tent?
Yes — her compact Indica structure suits tents from 80x80cm upward. Top once and use LST to keep the canopy flat. She doesn't stretch excessively during flower (30–50%), so height management is straightforward. The main challenge in small spaces is humidity control around those dense buds in late flower.
Last updated: April 2026
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Medical disclaimer. This content is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider before use of any substance.