How to Grow Alaskan Purple
Alaskan Purple is a frosty, cold-hardy indica with eye-catching purple buds and classic old-school genetics. It carries a medium 15–20% THC, an earthy, hash-like flavour with citrus and sweet notes, and a focused, happy, relaxed effect on a compact, resilient plant that is easy to grow and hard to disappoint.
Built from Northern Lights crossed with Afghan, this is a 70% indica, 30% sativa feminized hybrid with legendary heritage. The result is a dense, resin-coated plant that often turns deep purple in cooler weather, keeping the heavy-hitting indica character of both parents in a manageable, 1.2 m frame.
Recommended Strains
Alaskan Purple
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THC | 15% - 20% (Medium) |
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Type | Feminized |
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Yield | Medium |
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Phenotype | 70% Indica / 30% Sativa |
Alaskan Thunderfuck
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THC | 16% (Medium) |
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Type | Feminized |
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Yield | Medium |
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Phenotype | 40% Indica / 60% Sativa |
Because it is sturdy, compact and forgiving, Alaskan Purple is a rewarding grow at any level. You can see the full genetics and buy Alaskan Purple feminized seeds on the strain page, and browse more of our feminized seeds alongside it.
Strain Profile at a Glance
| THC | 15–20% (medium) |
|---|---|
| Lineage | Northern Lights x Afghan |
| Type | Feminized |
| Genetics | 70% Indica / 30% Sativa |
| Climate | Temperate |
| Flowering time | 8–10 weeks |
| Harvest | October |
| Height | 3.94 ft / 1.2 m |
| Yield | Solid |
| Yield indoor | 1.47 oz/ft² (450 g/m²) |
| Yield outdoor | 17.64–23.28 oz/plant (500–660 g/plant) |
| Grow difficulty | Beginner-friendly |
| Flavors | Citrus, Earthy, Hashish, Sweet |
| Effects | Focused, Happy, Relaxed |
Promos & Deals
Classic Cold-Climate Indica Genetics
Alaskan Purple draws on two of the most respected indica lines around. From Northern Lights it inherits dense, frosty, resin-heavy buds and reliable, uniform growth, while from Afghan it gains hardiness, a hash-like depth of flavour and that heavy, soothing body character.
Both parents evolved to handle cooler conditions, which is a real advantage for growers in temperate or unpredictable climates. It means Alaskan Purple stays compact, finishes on time and shrugs off the kind of cool, damp late-season weather that can trouble more delicate strains.
Climate and Where to Grow It
Alaskan Purple is well suited to a temperate climate and genuinely thrives where other strains struggle with the cold. It performs both outdoors in a shorter season and in a controlled indoor tent, staying compact at around 1.2 m, which makes it easy to tuck into tight spaces or keep discreet.
Outdoors it finishes around October, and a single plant can bring in a solid 500–660 g in a good spot. Indoors it produces a dependable 450 g/m². Keep humidity in check as the dense, chunky buds fill in, since tight indica flowers in a cool, damp room are worth protecting from bud rot.
Indoors, aim for daytime temperatures around 68–78°F (20–26°C) and keep steady airflow through the canopy. One bonus of its cold tolerance: letting night temperatures dip in the final weeks of flower is exactly what coaxes out its deep purple colour, so the climate it likes also makes it prettier.
Growing Feminized Photoperiod Seeds
As a feminized strain, every seed grows into a flowering female, so there is no need to sex the plants or remove males. That keeps the grow simple and means no wasted time or space on plants you would only cull later, which is part of why it suits newer growers so well.
Being a photoperiod plant, Alaskan Purple flowers on a light change rather than on age. Grow it under a long day (around 18 hours of light) through the vegetative stage, then switch to a 12/12 cycle to trigger flowering. A longer veg builds a bigger frame and harvest, while a shorter veg keeps this compact plant very small.
Feeding Schedule (EC Guide)
This is a sturdy indica that sets dense, resinous buds, so feed it steadily but without overdoing it. Start low, build up as the plant asks for more, and taper off for the final flush so the earthy, hash-like flavour stays clean and smooth.
| Stage | EC (mS/cm) | Notes |
|---|---|---|
| Seedling | 0.4–0.6 | Very light feed, focus on healthy root growth |
| Vegetative growth | 0.8–1.2 | Build the frame, raise nitrogen gradually |
| Early flower | 1.2–1.4 | Shift toward bloom nutrients (P and K) |
| Full flower | 1.4–1.6 | Peak bloom feed while the dense buds swell |
| Flush | 0.0–0.4 | Plain water for the final 1–2 weeks |
Flowering and Harvest
Once you flip to 12/12, bloom runs about 8–10 weeks. As an indica-dominant hybrid it stays short and bushy, filling in dense, chunky, resin-coated buds that often take on purple and violet tones as the nights cool toward harvest.
Keep the canopy open so light reaches the lower flowers, and watch the trichomes as finish approaches. Harvest when most have turned cloudy with a few amber heads for the fullest expression, and run a short plain-water flush in the last week or two to keep the smoke clean.
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 preserves both the purple colour and the hash-like aroma, which can dull quickly if the dense buds are dried too hard or too fast.
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 brings the earthy, sweet and citrus notes forward and smooths the smoke, which is exactly what this old-school indica cross deserves.
What to Do With Your Trim
Don’t bin the sugar leaves you remove while manicuring. Alaskan Purple is a frosty, resin-rich plant with hash-leaning genetics, so the trim is well suited to dry sift, bubble hash or rosin, giving you a bonus run of flavourful concentrate from material most growers would otherwise throw away.
Flavor and Terpenes
Alaskan Purple has an earthy, hash-like flavour with a sweet undertone and a bright citrus top, a classic old-school indica taste that nods straight to its Afghan side. It is a rich, grounded profile rather than a loud, fruity one, and it carries well through a careful cure.
It carries a broad, layered terpene stack, and the ones that shape the flavour stand out clearly. Citral lifts the bright citrus top; myrcene and humulene carry the earthy depth; caryophyllene and borneol add the hash-like, peppery spice; and eugenol folds in a warm, sweet clove note. A supporting cast of pinene, cedrene, cadinene, camphene, farnesene and fenchol fills in the aromatic corners.
Effects and Best Use
With its indica-dominant genetics, Alaskan Purple is reported as focused, happy and relaxed, a soothing body character kept clear-headed by a surprisingly focused lift. It is a versatile profile that works for unwinding in the evening but stays functional enough to enjoy earlier in the day.
At a medium 15–20% THC it is approachable rather than overpowering, which suits less experienced users and anyone who prefers a manageable, balanced high. That balance, the compact size, the cold tolerance and the striking purple colour are exactly why growers reach for Alaskan Purple.
FAQ
What are Alaskan Purple’s genetics?
Alaskan Purple is a feminized indica-dominant hybrid built from Northern Lights crossed with Afghan, two legendary, cold-hardy indicas. That heritage gives it dense, frosty, often purple-tinged buds, strong resilience in cooler weather, and the deeply relaxing body character both parents are famous for, in an easy-to-grow 1.2 m plant.
Why does Alaskan Purple turn purple?
The purple colour comes from anthocyanin pigments that show up when night temperatures drop in late flowering, a trait inherited from its cold-climate parents. To encourage it, let the dark-period temperature fall a little in the final weeks. The purple is cosmetic, but it is a big part of this strain’s appeal.
Is Alaskan Purple indica or sativa?
It is strongly indica-leaning, at roughly 70% indica and 30% sativa, which shows in its compact, bushy frame and relaxed body feel. The small sativa share keeps the effect focused and clear-headed rather than fully couch-locking, so it stays usable through the day as well as in the evening.
Is Alaskan Purple good for beginners?
Yes. It is a compact, resilient feminized plant with no males to remove, and its cold-hardy Northern Lights and Afghan roots make it forgiving of less-than-perfect conditions. Keep the canopy open for airflow and manage humidity as the dense buds fill in, and it is a straightforward, rewarding grow.
What does Alaskan Purple taste like?
Expect an earthy, hash-like base with a sweet undertone and a bright citrus top, a classic old-school indica profile. Citral lifts the citrus, myrcene and humulene carry the earthy depth, caryophyllene and borneol add the hashy spice, and eugenol folds in a warm, sweet clove note.
How long does Alaskan Purple take to flower?
About 8–10 weeks once you switch to a 12/12 light cycle, with outdoor plants finishing around October. It is a photoperiod feminized strain, so it blooms on the light change rather than on age, and the final weeks are when the cool nights can bring out its signature purple tones.
