Ayahuasca Purple is a Barney’s Farm indica built for color, calm, and a fast, easy harvest. Bred from Red River Delta x Master Kush, it is an almost pure indica with 22-23% THC, a striking purple finish, and an exotic flavor that runs from lavender and mango to earthy, sour-sweet notes. Best of all, it flowers in just 7-8 weeks, which makes it one of the quicker photoperiod strains you can grow. 

This is a photoperiod feminized strain, so it flowers when you shorten the light cycle. The figures below are Barney’s Farm breeder values; check your own pack for the exact numbers. 

Ayahuasca Purple Grow Info 

Trait Ayahuasca Purple (Barney’s Farm) 
Genetics Red River Delta x Master Kush 
Seed type Feminized (photoperiod) 
Genetic profile 90% indica / 10% sativa (almost pure indica) 
THC 22-23% (medium) 
Flowering time 7-8 weeks 
Indoor height 90-110 cm 
Outdoor height 120-150 cm 
Indoor yield 500-600 g/m² 
Outdoor yield Up to 800 g per plant 
Effects Relaxed, happy, euphoric, sleepy 
Flavor Earthy, floral, sweet, sour, with mango and lavender 

These are Barney’s Farm’s published figures for the Ayahuasca Purple line at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Ayahuasca Purple seed pack. 

What Makes Ayahuasca Purple Worth Growing 

The appeal here is a package deal: looks, flavor, and speed. Ayahuasca Purple turns deep purple as it ripens, puts out an unusual exotic flavor, and does it all on a short 7-8 week flowering cycle with yields up to 600 g/m² indoors. For a compact, good-looking, productive indica, that is a lot to like. 

The effect is classic indica: relaxed, happy, and eventually sleepy, the kind of strain you reach for to unwind or to help with sleep. Potency sits at a comfortable 22-23%, strong without being overwhelming, and the terpene mix of myrcene, caryophyllene, and humulene backs up that calming, sedative character. 

Is Ayahuasca Purple Indica or Sativa? 

Ayahuasca Purple is almost pure indica, listed at 90% indica and 10% sativa and marketed as a 100% indica. There is very little sativa influence here. 

That shows in both the plant and the high. The plant is short, dense, and bushy, with the tight bud structure typical of an indica. The high is a heavy, relaxing body stone that drifts toward sleep, so this is an evening and nighttime strain, not a daytime one. 

Flowering Time and Total Grow Time 

Because Ayahuasca Purple is a photoperiod strain, two timing numbers matter, and they are not the same. 

  • Flowering time: 7-8 weeks. This is a short bloom stage, and it starts only when you switch the lights to 12/12 indoors, or the outdoor days shorten in late summer. 
  • Total grow time (seed to harvest): flowering plus your veg period. Veg length is yours to set, so a typical indoor run from seed lands around 11-14 weeks depending on how long you veg. 

Outdoors, Ayahuasca Purple is usually ready in late September. The short flowering window is a real advantage, letting it finish before the cold and damp of mid autumn. 

Does Ayahuasca Purple Need a 12/12 Light Cycle? 

Yes. Ayahuasca Purple is a photoperiod strain, so indoors it needs a 12/12 light cycle to start flowering. You veg it under a longer schedule, usually 18/6, then switch to 12 hours on and 12 off to trigger bloom. 

Outdoors the season does this for you, with flowering starting as the days shorten in late summer. This is the key difference from an autoflower, which blooms on age no matter the light schedule. 

Ayahuasca Purple Grow Timeline, Week by Week 

Veg length is up to you, so the flowering weeks are the fixed part. Adjust the start to suit your space. 

  • Weeks 1-2: germination and seedling. The taproot and first leaves establish. Keep water light and conditions stable. 
  • Weeks 3-5: vegetative growth. The plant builds a short, bushy frame. Top it and use LST to open the canopy, since the dense indica structure benefits from extra light getting inside. 
  • Flip to 12/12: switch the light cycle when the plant is about two thirds of your target height; this indica does not stretch as hard as a sativa. 
  • Flower weeks 1-2: a short stretch and the first pistils. 
  • Flower weeks 3-6: dense buds form and the exotic aroma builds. Cooler nights now start to bring out the purple. 

Flower weeks 7-8: ripening and harvest. Judge by the trichomes, not the day count. 

Close-up of a thriving plant with purple and green blooms against a bright, clear sky and greenhouse structure.

Choosing Your Setup: Space, Light and Pots 

Ayahuasca Purple is made for compact spaces. At 90-110 cm indoors it fits easily in a tent, and its bushy indica shape responds well to a SCROG net or LST that opens the dense canopy to light. 

Light should be strong and even to fill out the tight buds. A full-spectrum LED at 30-40 watts per square foot over a trained canopy gets the most from the 500-600 g/m² potential. Good airflow matters more than usual here, because dense indica buds can trap humidity late in flower. 

For containers, use 3-5 gallon pots indoors, or larger fabric pots and open ground outdoors where it reaches 120-150 cm. As a photoperiod, it transplants fine, so you can pot up as it grows. 

Germinating and Raising Seedlings 

The paper towel method is the easy, reliable start. Soak the seeds for 12-24 hours, then set them between damp paper towels on a covered plate, kept dark and warm at 70-85°F (21-29°C). A taproot usually shows in two to three days. 

When the root reaches about 1-2 cm, plant it root-down a knuckle deep in a light, airy mix and keep the surface moist until it breaks ground. New to germination? Our beginner growing guides walk through it step by step. 

The Vegetative Stage and Training 

Because Ayahuasca Purple is a photoperiod plant, you can veg as long as you like and use the full training toolkit, which autoflowers cannot handle. 

The main goal with a dense indica is getting light into the canopy. Top the plant early, then use LST or a SCROG net to spread the bushy growth so lower buds are not left in the shade. This does more for yield on a compact indica than it does on an airy sativa. Keep nitrogen available through veg, and remember this plant stretches less than most after the flip, so you can flip a little later if you need the height. 

Feeding and Watering Ayahuasca Purple 

Feed moderately. This is a productive but compact indica, so it takes a solid bloom schedule without needing extremes. Use a nitrogen-forward base through veg, then shift to a bloom formula higher in phosphorus and potassium once you flip to 12/12, building up gradually and watching the leaves. 

Water by root-zone moisture. Demand rises through flower as the dense buds fill, so let the top layer dry between waterings to keep oxygen at the roots, and avoid leaving a compact plant sitting in constantly wet medium. 

Getting the Purple Color 

The purple is not guaranteed; it is coaxed out by temperature. Ayahuasca Purple has the genetics to turn deep purple, but the color comes through strongest when nighttime temperatures drop in the last two to three weeks of flower. 

Aim for a wider day-to-night temperature gap late in bloom, with cooler nights around 60°F (15°C), while keeping days in the normal range. Do not overcool or stress the plant chasing color, since health and ripeness matter more than looks. Outdoor plants often purple up naturally as autumn nights cool. 

Flowering and Knowing When to Harvest 

After the flip, expect a short stretch, then dense buds form quickly over the 7-8 week window. The exotic lavender, mango, and sour-sweet aromas build through the middle weeks, so run a carbon filter indoors and keep air moving around the tight colas. 

As the finish approaches, let the trichomes decide. Harvest when most are cloudy with a few amber for the fullest sedative effect this strain is known for. After the cut, hang the branches in the dark at about 60°F (15-16°C) and 55-60% humidity for 7-14 days, then cure in jars, burping daily for the first weeks to preserve the color and flavor. 

Growing Indoors vs Outdoors 

Indoors, the compact height and short flowering make Ayahuasca Purple one of the easier photoperiods to run. Keep a trained canopy under strong light, manage humidity around the dense buds, and the 500-600 g/m² yield is well within reach. 

Outdoors, it suits moderate climates and finishes early, by late September, with a single plant returning up to 800 g in good conditions. The cool autumn nights that arrive near harvest are exactly what brings out its purple color, so outdoor plants often look their best. Plant after the last frost, give it full sun, and support the heavy colas late in flower. 

How Tall and How Much? Height and Yield 

Height is easy to manage. Ayahuasca Purple stays 90-110 cm indoors and 120-150 cm outdoors, so it fits tents and patios without a fight. Topping and LST keep the indoor canopy flat and even. 

On yield, it is a strong producer for its size: 500-600 g/m² indoors and up to 800 g per plant outdoors. Those are top-end breeder figures, so strong light, an open canopy, and healthy roots are what move you toward them. 

Potted plants with reddish-brown topsoil growing in a well-lit indoor grow tent.

Best US Climates for Ayahuasca Purple 

Ayahuasca Purple does best in moderate climates, which covers much of the country. Its short 7-8 week flowering and late-September outdoor finish suit temperate and northern states, where the cool nights near harvest also deepen the purple. 

Growers in California and the West get easy outdoor finishes with plenty of sun. In the humid Southeast, the dense indica buds need extra airflow and attention late in flower to avoid rot, so a greenhouse or a covered, well-ventilated spot helps. For other varieties, browse our full how-to-grow library. 

Common Problems When Growing Ayahuasca Purple 

A few predictable issues are easy to avoid on this strain. 

Expecting purple without cool nights 

The purple is temperature-driven, not automatic. Without a cooler night period late in flower, the buds may stay green. Widen the day-to-night gap in the last few weeks, but do not stress the plant chasing color. 

Humidity in dense indica buds 

Tight indica colas trap moisture and can rot in a damp room or wet autumn. Keep airflow strong, manage humidity below 50% in late flower, and do not pack plants too close. 

Treating it like an autoflower 

This is a photoperiod plant. It will not flower under 18/6 and needs the light switched to 12/12 indoors. If you want a strain that flowers on its own, choose an autoflower instead. 

Harvesting by the calendar 

The 7-8 week window is a guide, not a cutting date. Read the trichomes and wait for mostly cloudy heads, with some amber for a heavier, more sedative effect. 

Making the Most of Your Harvest 

Do not waste the trim. The resinous sugar leaves make good bubble hash, dry sift, or infused oil, and the Master Kush heritage lends itself well to hash. The stems, roots, and fan leaves compost well and feed your next grow. 

Is Ayahuasca Purple Right for You? 

If you want a short, good-looking indica with a relaxing, sleepy effect and an exotic flavor, yes. It is compact, fast, productive, and forgiving, which makes it a strong pick for small spaces and for growers who want color and calm over a racy high. If you prefer an uplifting daytime strain, look to a sativa or balanced hybrid instead. For a potent Barney’s Farm hybrid, our Banana Punch grow guide is a good next read. 

Frequently Asked Questions 

Is Ayahuasca Purple indica or sativa? 

Ayahuasca Purple is almost pure indica, listed at 90% indica and 10% sativa and marketed as a 100% indica, from Red River Delta and Master Kush. It grows short and bushy and gives a heavy, relaxing, sleepy body stone, which makes it an evening and nighttime strain rather than a daytime one. 

Does Ayahuasca Purple need a 12/12 light cycle? 

Yes. Ayahuasca Purple is a photoperiod strain, so indoors it needs the light switched to 12/12 to start flowering. You veg it under a longer schedule like 18/6, then flip to 12 hours on and 12 off. Outdoors it flowers naturally as late-summer days shorten. 

How long does Ayahuasca Purple take to flower? 

Ayahuasca Purple flowers in about 7 to 8 weeks, which is short for a photoperiod strain. That is the bloom stage only, starting once you switch to 12/12. Total time from seed also includes your veg period, and outdoors it is usually ready to harvest by late September. 

How do you get Ayahuasca Purple to turn purple? 

The purple color is driven by temperature, not guaranteed by genetics alone. Give the plant cooler nights, around 60F (15C), in the last two to three weeks of flower, widening the day-to-night gap. Do not overcool or stress it, since ripeness and health matter more than color. 

How much does Ayahuasca Purple yield? 

Ayahuasca Purple yields around 500 to 600 g/m2 indoors and up to 800 g per plant outdoors in good conditions. Those are top-end breeder figures. Strong light, an open trained canopy, healthy roots, and good humidity control around the dense buds are what move you toward them. 

How tall does Ayahuasca Purple grow? 

Ayahuasca Purple is compact, reaching 90 to 110 cm indoors and 120 to 150 cm outdoors. That makes it easy to fit in a tent or a patio. Topping and LST keep the indoor canopy flat, and it stretches less after the flip than a sativa, so height is simple to manage. 

Can you clone Ayahuasca Purple? 

Yes. As a photoperiod strain, Ayahuasca Purple clones well, unlike autoflowers. Take cuttings from a healthy plant during veg, root them, and keep them under long light until you are ready to flower. Cloning lets you keep a reliably purple, high-yielding phenotype for your next run.