Permanent Marker x Banana Cream

Permanent Marker x Banana Cream Feminized Seeds by Blimburn Seeds

Permanent Marker x Banana Cream is a feminized cannabis seed strain from Blimburn Seeds that crosses Banana Cream Cake with Permanent Marker (Biscotti x Jealousy x Sherb Bx) to produce a 60% indica / 40% sativa hybrid testing between 25–28% THC. Dense, resin-caked buds with a banana-cream-and-diesel nose, ready to chop in 8–9 weeks. If you want flavour and potency in the same jar without a marathon flowering period, this is one of the strongest options Blimburn has put out.

Genetics and Lineage of Permanent Marker x Banana Cream

The genetic backbone here is a cross of two heavy hitters: Banana Cream Cake on the mother side and Permanent Marker on the father side. Banana Cream Cake brings smooth, tropical banana cream notes and a rich dessert terpene profile — the kind of sweetness that actually smells like something you'd eat. Permanent Marker descends from Biscotti x Jealousy x Sherb Bx, a lineage stacked with resin production, raw potency, and that unmistakable diesel-fuel edge.

The combination leans 60% indica and 40% sativa, which you'll notice in the growth structure: compact internodal spacing, thick central colas, but enough sativa influence to keep the canopy from becoming an impenetrable brick. THC sits between 25% and 28%, putting this firmly in the heavy-hitter category. Not a strain for your first grow-and-smoke — but if you've got a few cycles under your belt and want something that'll impress, the genetics deliver.

Flavour and Aroma Profile

Permanent Marker x Banana Cream is banana-forward on the inhale — not artificial banana candy, but a ripe, creamy sweetness with genuine tropical depth. Underneath that, you get earthy and diesel undertones courtesy of the Permanent Marker parent. The exhale is where the diesel really shows up: a sharp, fuel-tinged funk that rounds out the sweetness and stops it from being one-dimensional.

As the buds cure, the profile deepens noticeably. We'd recommend a minimum two-week cure in glass jars — the terpene complexity at week three versus day one is night and day. You'll start picking up subtle floral notes alongside the banana cream, and the diesel edge mellows into something almost savoury. It's one of those strains where the smell alone justifies the grow.

One honest note: during late flower, this plant is loud. If you're growing in a tent without a carbon filter, your entire flat will smell like a banana split dipped in petrol. Budget for proper extraction and filtration.

Growing Permanent Marker x Banana Cream Seeds

Flowering completes in 8–9 weeks from the flip to 12/12, which is quick for this level of resin production. Indoor growers can expect yields of 500–600 g/m² under a proper light setup — 600W HPS or a comparable LED panel will do the job. Outdoor growers in warm, Mediterranean-style climates can push up to 700 g/plant, which is genuinely impressive for a strain that doesn't stretch excessively.

The plant develops compact, trichome-laden buds with a structure that responds well to training techniques. Low-stress training (LST) in particular helps open up the canopy and expose lower bud sites to direct light — critical for maximising that 500–600 g/m² indoor potential. If you're running a Sea of Green (SOG) setup, the compact indica structure makes this a natural fit: more plants per square metre, shorter veg time, and uniform canopy height.

Pruning lower growth during the first two weeks of flower removes larf and redirects energy to the main colas. The resin production on this strain is heavy enough that the buds have genuine extraction value — if you're into making hash or rosin, the trim alone is worth saving.

Indoor vs Outdoor: Which Works Best for Permanent Marker x Banana Cream?

Both environments work, but the strain's compact indica structure and heavy resin production make it particularly well-suited to indoor growing. In a controlled environment, you can dial in temperature and humidity during late flower to preserve terpenes — and with a nose this complex, that matters. Aim for 45–50% relative humidity during weeks 6–9 to reduce mould risk on those dense colas.

Outdoors, this strain thrives in warm, dry climates with long summers. If you're in northern Europe where autumn arrives early and wet, the 8–9 week flowering time is your friend — you'll likely harvest before the worst of the damp sets in. That said, the bud density means any sustained rain during late flower is a mould invitation. Greenhouse growing splits the difference nicely: natural light, controlled moisture.

We'd pick indoor for this one if you've got the space. The flavour and bag appeal you get from a climate-controlled grow with a proper dry and cure are worth the electricity bill.

Effects of Permanent Marker x Banana Cream

At 25–28% THC, this strain hits with noticeable intensity. The onset leans towards the sativa side of the genetic split — a lively, uplifting headspace that settles in within the first few minutes. Over the next 30–45 minutes, the indica backbone takes over, delivering deep physical relaxation that anchors you without completely switching the lights off.

The balance between the initial uplift and the later body-heavy phase is what makes this cross interesting. It's not a pure couch-lock indica, and it's not a racy sativa — it sits in that middle ground where you're relaxed but still present. Traditionally, strains with this kind of profile have been used for unwinding in the evening without immediately falling asleep.

According to research published in PMC, Cannabis sativa extracts may play a role in regulating oxidative stress, with one study observing a significant increase in catalase (CAT) activity in plasma (PMC8303441). Separately, research into the entourage effect suggests that the combination of cannabinoids and terpenes found in full-spectrum cannabis may produce effects beyond those of isolated compounds (PMC11870048). These findings are from laboratory and preclinical research — they describe observed mechanisms, not guaranteed outcomes from any specific strain.

A word on side effects: at this THC level, dry mouth and dry eyes are common. Some users report heightened anxiety at higher doses, particularly those with lower tolerance. The 25–28% range is not a starting point — it's a destination. Systematic reviews of long-term nonmedical cannabis use have noted increased risks for psychotic, respiratory, and cardiovascular events. Respect the potency.

Why Grow Permanent Marker x Banana Cream?

The cannabis seed market is full of strains that promise flavour or potency — rarely both in the same package. Permanent Marker x Banana Cream genuinely delivers on both fronts. The Banana Cream Cake parent gives you a terpene profile that's complex and memorable, while the Permanent Marker genetics bring the kind of resin coverage and THC levels that make this strain viable for extraction as well as flower.

From a practical standpoint, the 8–9 week flowering time is a real advantage. Many strains in the 25%+ THC bracket push 10–12 weeks, eating into your schedule and your electricity budget. This one finishes fast, yields generously (500–600 g/m² indoors is no joke), and produces buds that look like they belong in a dispensary display case. Dense, frosty, and structurally sound — they trim well and cure beautifully.

The one thing to watch: bud density combined with heavy resin can create a microclimate inside the colas that invites mould if your airflow isn't dialled in. Run oscillating fans at canopy level and don't skip defoliation during the stretch. We've seen growers lose gorgeous plants to botrytis in the final week because they got complacent with ventilation. Don't be that grower.

How to Grow Permanent Marker x Banana Cream Seeds

1. Germinate your feminized seeds using the paper towel method: place seeds between damp (not soaking) paper towels on a plate, cover with a second plate, and keep in a warm spot (22–25°C). Taproots typically emerge within 24–72 hours.
2. Transplant sprouted seeds into small pots (0.5L) with a light, airy seedling mix. Keep humidity high (65–70%) and lighting gentle — a T5 fluorescent or dimmed LED at 60cm distance works well for the first week.
3. Move to final containers (11–15L for indoor, 30–50L for outdoor) once the plant has 4–5 nodes. This strain responds well to fabric pots for improved root aeration.
4. Begin low-stress training (LST) once the plant has 5–6 nodes. Gently bend and tie the main stem to open up the canopy. For SOG setups, skip LST and flip to 12/12 after a short 1–2 week veg period.
5. Flip to 12/12 light cycle to initiate flowering. Defoliate strategically during the first two weeks of flower — remove large fan leaves blocking light to lower bud sites, and strip lower growth that won't receive adequate light.
6. During weeks 3–5 of flower, increase phosphorus and potassium in your feeding schedule to support bud development. Watch for calcium deficiency — resin-heavy strains tend to be calcium-hungry.
7. In weeks 6–9, reduce humidity to 45–50% and maintain strong airflow around the canopy. Flush with plain water for the final 7–10 days before harvest.
8. Harvest when trichomes show a mix of milky white and 10–20% amber under a jeweller's loupe. Dry in a dark room at 18–20°C and 55–60% humidity for 10–14 days, then cure in sealed glass jars for a minimum of two weeks.

Frequently Asked Questions

Last updated: April 2026