How to Grow Permanent Marker
Permanent Marker is a very potent, balanced hybrid feminized strain that crosses Biscotti, Jealousy and a Sherb backcross. It is a 50/50 hybrid with a very high 32-34% THC, a sweet, floral flavor with a sharp, sugary edge, and a creative, euphoric, happy effect. A celebrated modern strain known for its loud aroma and top-shelf potency, it is a rewarding plant to grow.
As a feminized photoperiod strain, Permanent Marker lets you control the grow: you keep it in vegetative growth under long days for as long as you like, then switch the lights to trigger flowering. It finishes flowering in about 8 to 10 weeks, and outdoors it is ready to harvest in October, giving you a compact, resinous plant with a sweet, pungent, floral profile.
Recommended Strains
Permanent Marker
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THC | 32% - 34% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Permanent Marker Auto
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THC | 32% - 34% (High) |
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Type | Autoflowering |
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Yield | High |
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Phenotype | 50% Indica / 50% Sativa |
Potent, heavy-yielding and beginner-friendly, Permanent Marker is a rewarding strain to grow. You can see the full genetics and buy Permanent Marker seeds on the strain page, and browse the rest of our feminized seeds alongside it.
Strain Profile at a Glance
| THC | High (32-34%) |
|---|---|
| Lineage | (Biscotti x Jealousy) x Sherb Bx |
| Type | Feminized |
| Genetics | 50% Indica / 50% Sativa |
| Climate | Temperate |
| Flowering time | 8-10 weeks |
| Harvest | October (outdoors) |
| Height | 4.92 ft / 1.5 m |
| Yield indoor | 1.64-1.8 oz/ft² (500-550 g/m²) |
| Yield outdoor | 24.69-29.98 oz/plant (700-850 g/plant) |
| Grow difficulty | Easy, beginner-friendly |
| Flavors | Sweet, Floral, with a sugary edge |
| Effects | Creative, Euphoric, Happy |
Promos & Deals
Vegetative Growth and Flipping to Flower
Permanent Marker is a feminized photoperiod strain, so it flowers in response to the light cycle rather than on its own schedule. You keep it in vegetative growth under long days, usually 18 hours of light to 6 of darkness, for as long as you want to build its size and structure. This is where you set the frame of the plant, so give it room, healthy roots and steady feeding before you make the switch.
When the plant is the size you want, you flip the lights to a 12/12 cycle, 12 hours of light and 12 of darkness, to trigger flowering. From that point it takes about 8 to 10 weeks to finish. Because it is a compact, balanced hybrid that stays around 1.5 m, it responds very well to training: topping and low-stress training during veg open the canopy and spread the bud sites, which lifts its already heavy yield.
Climate and Where to Grow It
Permanent Marker suits a warm, temperate climate and grows well both indoors and outdoors where it gets strong light and steady conditions. Because it is a photoperiod plant, outdoor growers should time it so it finishes in October, while indoor growers can run it year-round under a controlled light cycle. Its compact 1.5 m frame makes it easy to manage in a tent or in a sunny outdoor spot.
Its very high 32-34% THC places it firmly among our high-THC seeds, and its even, balanced make-up sits naturally in our hybrid seeds. Its genuine cookie heritage, from the Biscotti and Jealousy sides, places it among our kush strains, and you can explore both named parents directly through the Biscotti and Jealousy pages.
On yield it is a heavy producer, giving around 500-550 g/m² indoors and a large 700-850 g per plant outdoors, so there is real weight here to go with the potency. Keep temperatures around 68-80°F (20-27°C) and the humidity steady through flowering so the dense, resinous buds ripen clean.
Feeding Schedule (EC Guide)
Permanent Marker is a vigorous, heavy-yielding plant that can take a moderate to full feed, but build up gradually rather than pushing it from the start. Feed it steadily through veg, shift toward bloom nutrients as it starts flowering, then flush at the end so the sweet and floral notes come through clean. The ranges below are a starting guide; adjust to your water and medium.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.5-0.7 | Light feed while roots establish |
| Vegetative | 1.2-1.6 | Build nitrogen as the plant grows |
| Early flower | 1.6-1.9 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.8-2.1 | Peak bloom feed for heavy, resinous buds |
| Flush | 0.0-0.4 | Plain water for the final 1-2 weeks |
Flowering and Harvest
Once flipped to 12/12, Permanent Marker flowers for about 8 to 10 weeks, and outdoors it is ready around October. It builds dense, frosty, resin-coated buds that develop a sweet, floral aroma with a sharp, pungent edge as they ripen. That loud, sweet-floral scent and heavy frost are the signature of its Biscotti and Jealousy heritage, and the resin it packs on is one of its calling cards.
Yields are heavy, around 500-550 g/m² indoors and 700-850 g per plant outdoors on a well-grown specimen, so there is real weight to go with the potency. Keep the dense colas supported and the canopy open so light reaches the lower sites, feed it well through flower, and harvest when most of the trichomes have turned cloudy with a few amber for the fullest sweet, floral flavor and the most rounded effect.
Drying and Curing
Dry whole plants or branches in a dark room at around 60°F (15-18°C) and 55-60% humidity for 7-14 days, until the thin stems snap rather than bend. A slow, even dry matters with such dense, resinous buds, because they can stay damp in the middle while the outside dries, and a gentle dry protects the sweet, floral aroma that defines the strain.
Then cure the trimmed buds in sealed jars, burping them daily for the first week and letting them settle for three to four weeks. A proper cure is what brings out the full sweet, floral character and smooths the smoke, turning a freshly dried harvest into the loud, high-impact result Permanent Marker is known for.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Permanent Marker is a very resinous plant, so its trim is excellent for dry sift, bubble hash or rosin. That heavy resin and its sweet, floral aroma make the trim genuinely valuable, turning offcuts into a potent, flavorful concentrate run rather than waste, a real bonus from such a high-THC strain.
Flavor and Terpenes
Permanent Marker leads with a sweet, floral flavor carrying a sharp, sugary edge, the pungent, eye-catching profile that gives the strain its name. It is a smooth but characterful smoke, and a good cure brings that sweet, floral character forward in the jar and on the inhale, with the sharp, pungent top note giving it its distinctive personality.
Its terpene profile frames that flavor. Caryophyllene adds a peppery, spicy warmth that sits underneath the sweetness and gives the strain its depth and bite. Linalool rounds it out with a soft, gently floral note that plays into the floral side. The sweet notes themselves come through from its Biscotti and Jealousy genetics, with these terpenes building the spicy, floral frame around them.
Effects and Best Use
With its very high 32-34% THC and balanced 50/50 make-up, Permanent Marker delivers a potent, well-rounded experience. It is reported as creative, euphoric and happy, pairing a bright, mentally engaged lift with an even, comfortable body that does not pull too far in either direction. The potency is genuinely high, so a measured dose goes a long way, especially for newer smokers who may prefer to start slow.
That creative, euphoric, happy profile makes it a flexible choice for daytime or social use, well matched to its sweet, floral flavor. The combination of real, top-shelf potency, a distinctive taste and a balanced, even-handed body is exactly why Permanent Marker has become such a celebrated modern strain.
Common Problems and Pro Tips
Permanent Marker is forgiving and beginner-friendly, but its dense, resinous buds ask for a clean finish. In flowering, keep the air moving and the humidity steady so those tight, frosty colas ripen without trapping moisture at the heart of the bud. With buds this resinous, good airflow through the final weeks is the main thing that keeps the harvest clean.
Training pays off here: because it stays compact, topping and low-stress training during veg open the canopy and spread the bud sites, which on a productive plant like this adds up to a bigger, more even harvest. Support the dense colas as they fill out so the branches do not strain under the weight, and give the lower bud sites enough light to ripen evenly.
As a pro tip, feed it well through veg and early flower to fuel those big yields, then flush properly at the end so the sweet, floral notes come through clean. Protect the terpenes with a full three to four week cure, save the very resinous trim for concentrates, and harvest when most trichomes are cloudy with a few amber for a rich, flavorful result.
FAQ
Is Permanent Marker a feminized strain?
Yes. Permanent Marker is a feminized photoperiod strain, so it produces female plants and flowers in response to the light cycle. You keep it under long days to grow its size, then flip the lights to a 12/12 cycle to start flowering. That control lets you dial in exactly how big the plant gets before it blooms, which suits any grow space.
How much THC does Permanent Marker have?
Permanent Marker is a very potent, high-THC strain, testing from about 32% up to 34% depending on the phenotype and how it is grown, which is top-shelf by any standard. Combined with its balanced 50/50 genetics, the result is a creative, euphoric, happy effect. It is well worth dosing carefully if you are newer to strong strains.
How long does Permanent Marker take to flower?
Once you flip it to a 12/12 light cycle, Permanent Marker flowers for about 8 to 10 weeks before it is ready to harvest. Outdoors, it finishes around October. Because it is a photoperiod plant, you control the vegetative stage, so you can grow it to the size you want before switching the lights to begin flowering.
Is Permanent Marker indica or sativa?
Permanent Marker is a balanced hybrid, at a 50/50 split, so it grows as a sturdy, manageable plant with dense, frosty buds, staying around 1.5 m and finishing in about 8 to 10 weeks of flowering. That balance shows in its creative, euphoric, happy effect, which pairs an engaged, upbeat head with an even, comfortable body.
What does Permanent Marker taste like?
It has a sweet, floral flavor with a sharp, sugary edge, the pungent profile that gives the strain its name. Caryophyllene adds a peppery, spicy warmth and linalool a soft, floral note, while the sweetness comes through from its Biscotti and Jealousy genetics. A proper three to four week cure brings that sweet, floral character forward on the inhale, smooth but distinctive.
How much does Permanent Marker yield?
Permanent Marker is a heavy producer, giving around 500-550 g/m² indoors and a large 700-850 g per plant outdoors. To reach those numbers, give it strong light, a steady feed and good support for the dense colas. Training it during veg spreads the canopy and helps this productive plant push its harvest higher still.
