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Permanent Marker XL Auto by Sweet Seeds is the ultimate choice for growers who refuse to compromise between speed, yield, and top-shelf quality. This autoflowering gem brings the legendary US genetics to your grow room, delivering heavy, resinous flowers with a piercing aroma that lives up to its name, all in a super-fast cycle.
Let’s be real: there is nothing worse than spending months caring for a plant only to end up with mediocre buds that lack punch and flavor. You invest your money in electricity and nutrients, and your time is worth gold. Why risk it on unstable genetics that leave you wishing you had bought something better?
Continuing with average seeds means you are literally throwing away the potential of your setup. You get less yield per watt, weaker effects, and a terpene profile that fades before you even finish curing. It’s the frustration of knowing you could have harvested top-tier "Cali" quality in the same amount of time.
Permanent Marker XL Auto is the solution to that mediocrity. Sweet Seeds has stabilized this US hybrid to ensure that every seed turns into a resin factory. You get the structural vigor of an XL Auto and the insane potency of the original Permanent Marker clone. It pays for itself by filling your jars with dense, A-grade buds that hit hard and taste incredible.
Imagine opening your jar and filling the room with that pungent, chemical, and floral aroma that everyone is talking about. This strain isn't just about getting high; it's about the experience. Because it is an XL variety, you are looking at a harvest that lasts longer, meaning fewer trips to the grow shop or dispensary.
For the home grower, this translates to efficiency. You get a heavy harvest in a short window, allowing you to fit more cycles into a year. Whether you vape or roll, the high resin content means you need less material to get to where you want to be. It is efficiency meeting enjoyment.
This genetic is designed to perform like a beast without the complications of photoperiod plants. Here is what you need to know:
To really push this strain to its limit without breaking the bank, skip the transplants. Start the seed directly in its final pot (at least 11 L (2.9 gal), though 18 L (4.7 gal) is better) to avoid stunning the root system. This ensures the plant uses every single day of its vegetative phase to grow big.
Also, don't skimp on light. Give it 20 hours of light and 4 hours of darkness throughout the entire cycle. This simple trick maximizes photosynthesis and bud density without the need for expensive boosters. Just good light and a steady environment will do 90% of the work.
Quick overview: XL Autoflower · Sweet Seeds · 8 weeks cycle approx. · Ideal for temperate climates and indoor setups.
Safe start: Germinate directly in the final pot to avoid stress. To ensure a massive root system early on, use BAC Root Stimulator during the first week.
Directed growth: Maintain 18–20 hours of light. The plant will stretch; keep the lamp at the right distance. Water sparingly initially, increasing as leaves expand.
Efficient flowering: Once pistils appear, keep humidity around 40–50%. In the fattening stage, add Aptus Super PK to maximize bud density and weight.
Harvest and refinement: Look for milky trichomes for a balanced high. Flush roots 10 days before cutting. Dry slowly at 18–20 °C (64–68 °F) to preserve those volatile terpenes.
Indoors, it usually stays between 60–100 cm (23.62–39.37 in), making it manageable for tents. Outdoors, with plenty of sun and root space, it can reach up to 1.50 m (4.92 ft).
Yes, the terpene profile is very distinctive. It mixes sweet, floral notes with a sharp, chemical "gassy" background that reminds many users of a marker pen. A carbon filter is highly recommended.
Absolutely. Being an autoflower, you don't need to worry about light schedules. It is vigorous and resistant, making it a forgiving plant for first-time growers.
"I've tried a lot of US genetics lately, but this auto version by Sweet Seeds really surprised me. The speed is incredible—you are literally cutting down plants while your photoperiods are still stretching. What I love most is the density of the buds; they are rock hard and sticky as hell."
"For me, the best results came from using 20 liter pots with coco coir and keeping the lights on for 20 hours. The smell in late flower is intense, super chemical and sweet. It's one of those strains that pays for itself just with the quality of the resin you get. Definitely a keeper for my rotation."
Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.
Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.
UK: 3-4 days (express)
USA: 4-5 days (express)
Australia: 4-5 days (express)
Japan: 4-5 days (express)
Canada: 4-5 days (express)
South Africa: 4-5 days (express)
New Zealand: 5-7 days (express)
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The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.
We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.
Due to problems with customs you can check here for restrictions to certain countries.
We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).
You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.
In 24/48 hours we will ship your order.
If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.
If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.
Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.
If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!
Among all those who comment or send us your questions, there will be a monthly raffle for a €50 voucher for your purchases at Pevgrow. What are you waiting for? Write us and participate!