Purple Punch Strain Autoflower SeedsA knee-to-waist-high, berry-sweet indica that is done in 8–10 weeks
No reviews yet · be the first to review Purple PunchThe Purple Punch strain as an autoflower runs on a timer: seed banks list 8 to 10 weeks from sprout to harvest, with no dark period to manage. Barney's Farm built its auto by crossing Purple Punch with its own Auto Critical and lists it at about 80% indica, 18% THC and only 70–80 cm tall. Other auto lines claim up to 24% THC and bigger plants. All of these seeds are feminized.
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What is the Purple Punch strain autoflower?
Autoflowering Purple Punch is an indica-dominant cross of Purple Punch (Larry OG × Granddaddy Purple) with an autoflowering line, so it blooms after a few weeks of growth whatever the light hours. Barney's Farm's version uses its Auto Critical as the second parent and is listed at about 80% indica, 18% THC, 8 to 9 weeks from seed and 70–80 cm in height. MSNL's Purple Punch autoflower is listed at 75% indica, up to 24% THC and 8 to 10 weeks. Both describe sweet berry flavors and a calming effect.
Barney's Farm lists its Purple Punch Auto at about 80% indica; MSNL lists 75% indica for its own line.
Barney's Farm lists its auto at just 70–80 cm, short enough for cabinets and balconies.
Purple Punch strain specs
These autoflower numbers come from two seed-bank data sheets: Barney's Farm's Purple Punch Auto, as published by Zamnesia, and MSNL's Purple Punch autoflower. They are separate lines with different auto parents, so the table gives each figure with its owner.
| Type | Indica-dominant autoflower, 75–80% indica |
|---|---|
| Genetics | Purple Punch × BF Auto Critical (Barney's Farm); Purple Punch × ruderalis (MSNL) |
| Bred by | Auto lines by Barney's Farm, MSNL and others; original Purple Punch credited to Supernova Gardens |
| THC | 18% (Barney's Farm) up to 24% (MSNL) |
| CBD | 1% or less |
| Main terpenes | Caryophyllene (Barney's Farm); myrcene, pinene and caryophyllene (MSNL) |
| Aroma & flavor | Blueberry, cherry, grape, baked apple, sweet spice |
| Reported effects | Calming, relaxing, lightly uplifting |
| Seed type | Autoflower feminized (female plants, blooms by age) |
|---|---|
| Seed to harvest | 8–9 weeks (Barney's Farm) to 8–10 weeks (MSNL) |
| Outdoor harvest | About 9–10 weeks after sowing; MSNL gives a June-to-October window |
| Height | 70–80 cm (2.3–2.6 ft) for Barney's Farm; MSNL lists 100–180 cm for its line |
| Yield | Up to 350 g/m² (Barney's Farm) or 400–500 g/m² (MSNL), both best-case |
| Difficulty | Easy |
| Best methods | Small pots in a Sea of Green, light LST, 18 hours of light |
| Climate | Indoors or outdoors; MSNL rates its line for cool to warm climates |
Where does the Purple Punch strain come from?
Autoflower Purple Punch comes from breeding the Larry OG × Granddaddy Purple hybrid called Purple Punch with a plant that already autoflowers. Barney's Farm names its donor: BF Auto Critical, a quick, heavy-yielding auto from its own catalog. MSNL simply lists Purple Punch × ruderalis. Since each seed bank picks its own partner, two packs labeled Purple Punch autoflower can differ in height, speed and strength.
The photoperiod original is credited to Supernova Gardens and reached a wide audience through California growers in the late 2010s. Its trademarks are a short frame, a sugary grape-and-berry smell and flowers that often turn violet. The auto versions keep the indica build and the sweetness, while the autoflowering parent removes the dependence on day length and brings the whole life cycle down to about two months.
Autoflower, fast or feminized Purple Punch: which is which?
Only the autoflower ignores the light schedule. Feminized Purple Punch grows until nights reach 12 hours and then blooms for 8 to 9 weeks. The fast version also waits for long nights but ripens roughly a week sooner. Autoflower Purple Punch does everything, seedling to ripe bud, in 8 to 10 weeks under any day length, and stays the smallest of the three.
The trade-off is size. A 70–80 cm autoflower cannot match the harvest of a photoperiod Purple Punch that was vegged for a month or more, and it cannot be cloned.
What does Purple Punch autoflower taste like, and how does it feel?
Aroma and flavor
Autoflower Purple Punch is sweet and fruity: Barney's Farm describes apple pie, sweet blueberry, cherry and a hint of spice, and MSNL lists berry, sweet and grape. That keeps it in the dessert family of the photoperiod strain, which is best known for grape candy and blueberry.
- Blueberry
- Cherry
- Grape
- Apple pie
- Sweet spice
Terpenes
- Caryophyllene
- The one terpene on Barney's Farm's sheet; warm and peppery
- Myrcene
- Jammy, overripe fruit; listed by MSNL
- Pinene
- A cooler green note; listed by MSNL
Terpenes are as printed on the two seed banks' sheets for their auto lines; neither publishes a lab report.
Reported effects
Seed banks describe autoflower Purple Punch as relaxing and calming, with a mild uplift at the start. Barney's Farm tags its auto simply as relaxing, and MSNL adds uplifting. That matches the photoperiod strain's reputation as an evening indica that gets heavier as a session goes on.
- Relaxed
- Calm
- Uplifted
- Heavy-bodied
Like the photoperiod strain, autoflower Purple Punch can make people drowsy and slow in larger amounts, and dry mouth is common.
Effect notes for autoflower Purple Punch are taken from Barney's Farm's and MSNL's listings and from reviews of photoperiod Purple Punch on AllBud and Weedmaps; nothing here is medical advice.
How do you grow Purple Punch seeds?
Autoflower Purple Punch seeds are a plant-and-wait grow: sow in the final pot, leave the lamp on about 18 hours a day for the whole run as Barney's Farm advises, keep training minimal, and harvest roughly 8 to 10 weeks after the seedling breaks the surface.
- Germinate2–6 days
Put each Purple Punch autoflower seed where it will finish. With a life this short, a stalled week after repotting shows up as a smaller plant.
- Early growthWeeks 1–3
Growth is squat and leafy. Many growers leave autoflower Purple Punch untopped and just tuck large fan leaves away from bud sites.
- FlowerAbout weeks 4–8
Bloom starts by itself around week three or four. Buds are dense, so lower the humidity as they thicken.
- HarvestWeek 8–10 from seed
Barney's Farm quotes 50–60 days in its description; check trichomes from day 50 onward.
Grow tips for Purple Punch autoflower
- Pick it for small spaces. At 70–80 cm on Barney's Farm's sheet, autoflower Purple Punch fits low cabinets and can be packed several to a square meter.
- Check which line you have. MSNL lists its Purple Punch autoflower at 100–180 cm. If your plants keep climbing past 80 cm, bend the tops instead of raising the lamp.
- Dense buds need dry air. Purple Punch's Granddaddy Purple side packs tight flowers. Aim for good airflow and under about 50% humidity late in bloom.
- Purple is a bonus, not a promise. Violet color shows on some autoflower Purple Punch plants and not on others. Slightly cooler nights near the end can help it along.
- Stagger sowings outdoors. With a 9 to 10 week cycle, two rounds of autoflower Purple Punch fit into one warm season in many gardens.
Is Purple Punch autoflower the right strain for you?
Great pick if you
- Have a short tent, a cabinet or a balcony and need a plant under 1 m
- Want sweet blueberry, cherry and grape flavors quickly
- Are growing for the first time and want a simple light schedule
- Like a calm, evening-type indica
Think twice if you
- Want the largest harvest per plant (the feminized version yields more)
- Want to choose when flowering starts, as the fast and feminized versions allow
- Plan to keep a mother and take clones
- Prefer a bright, energetic daytime high
Purple Punch strain FAQ
How long does Purple Punch autoflower take from seed to harvest?
Autoflower Purple Punch is listed at 8 to 9 weeks from seed by Barney's Farm and 8 to 10 weeks by MSNL. Barney's Farm's description also mentions 50 to 60 days, so the earliest plants can be ready soon after week seven.
How much THC does Purple Punch autoflower have?
It depends on the seed line. Barney's Farm lists its Purple Punch Auto at 18% THC with about 1% CBD, while MSNL lists its Purple Punch autoflower at up to 24% THC with less than 1% CBD. Neither figure is an independent lab test.
How tall does Purple Punch autoflower grow?
Barney's Farm lists its Purple Punch Auto at about 80 cm indoors and 70 cm outdoors, which is very compact. MSNL gives a much taller 100 to 180 cm for its own line, so height depends on which autoflowering parent the breeder used.
How much does Purple Punch autoflower yield?
Barney's Farm quotes up to 350 g/m² indoors for its Purple Punch Auto, and MSNL quotes 400 to 500 g/m² for its line. These are best-case seed-bank figures under strong light; small plants in small pots produce less.
Is Purple Punch autoflower indica or sativa?
Autoflower Purple Punch is indica-dominant. Barney's Farm lists about 80% indica for its auto, and MSNL lists 75% indica and 25% sativa. Both include a ruderalis share from the autoflowering parent that is not broken out separately.
What does Purple Punch autoflower taste like?
Barney's Farm describes its Purple Punch Auto as apple pie, sweet blueberry and cherry with a hint of spice, and MSNL lists berry, sweet and grape for its version. The photoperiod strain is famous for a grape-candy smell.
Do Purple Punch autoflower buds turn purple?
Some do. Purple color comes from the Granddaddy Purple side of Purple Punch and shows more on certain plants and with cooler nights late in flower. Seed banks do not promise purple buds on every autoflower plant.
What is the difference between Purple Punch autoflower and Purple Punch fast version?
The autoflower blooms by age and finishes in 8 to 10 weeks from seed under any light hours. The fast version is a photoperiod plant that still needs 12-hour nights to flower; it only shortens the bloom by about a week compared with standard feminized Purple Punch.
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Purple Punch's other versions and relatives
Purple Punch Feminized
Purple Punch Feminized (fast)
Grandaddy Purple Autoflowering Feminized
Critical Autoflowering FeminizedBeaver Seeds sells cannabis seeds for collection and genetic preservation where permitted. Check the laws in your state, province or country before germinating seeds. Effects are user-reported and are not medical claims.
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