Pineapple Express autoflower cannabis bud with orange pistils and frosty calyxes

Autoflower seeds

TrainwreckxHawaiianxRuderalis

THC: 18-20%
Bloom: 9-10 wks from seed
Yield/sq ft: 1.3-1.6 oz
Level: Easy

Pineapple Express Autoflower Seeds

From $65.00

Ripe pineapple, citrus and a cedar backbone. A sativa-dominant autoflower ready 9-10 weeks from seed, built for short seasons, balconies and back-to-back runs.

THC18-20%
Bloom9-10 weeks from seed
Height2-4 ft indoors
LevelEasy

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SKU: BMS-PE-AUTO Categories: Autoflower Seeds, Beginner Seeds, Fast Flowering Seeds, Hybrid Seeds, Outdoor Seeds, Sativa Seeds

Quick answerPineapple Express Auto is a sativa-dominant autoflower bred from Trainwreck and a Hawaiian strain, with ruderalis added so it flowers without a light change. It is known for a tropical pineapple, citrus and cedar aroma, reported THC around 18-20%, and a harvest 9-10 weeks from seed indoors.

Pineapple Express Auto at a glance

THC18-20%Supplier reported. Plenty of punch for a fast autoflower.

Flowering9-10 wksFrom seed, no 12/12 switch

Indoor yield1.3-1.6 ozPer sq ft under strong LED

Height2-4 ftIndoors. 3-5 ft outdoors

Outdoor harvest10-12 wksAfter sprouting, repeat all summer

Best forShort seasons and balcony gardensFast enough for more than one outdoor run per summer in much of the US

What is the Pineapple Express Auto strain?

Pineapple Express takes its name from the 2008 stoner comedy film of the same title, which made the name famous well beyond grow rooms. The strain itself earns the title with a loud, tropical fruit aroma that is hard to miss once a jar is open.

The genetics pair Trainwreck, which brings sativa vigor and a sharp edge, with a Hawaiian line that adds sweet island fruit. This autoflower version adds ruderalis, which makes the plant flower by age instead of day length. It lands at about 60-70% sativa, stays compact and is ready 9 to 10 weeks from seed indoors.

That speed is what sets this version apart. A photoperiod plant needs a long season and a fall finish, while an autoflower can go in the ground in late spring, come down in summer and be replanted. It is a natural fit for short northern seasons, apartment balconies and growers who want more than one harvest a year.

TrainwreckHawaiian

Trainwreck x HawaiianRuderalis

Pineapple Express Auto

How it feels

Consumers commonly describe an energetic, happy lift that keeps the mind busy and social, with a light, relaxed body underneath. It is usually reported as an upbeat strain that leans toward daytime use.

First few minutesSunny, energetic rise
A fast boost in mood that often gets people talking and laughing.
At the peakCreative buzz
Ideas come easily, and music, cooking or hobbies feel more engaging.
Later onHappy, easy glide
A relaxed, contented tail that rarely tips into sleepiness.

Commonly reportedEnergeticUpliftedCreativeHappy

At 18-20% reported THC, a little goes a long way for newer consumers. Commonly reported downsides include dry mouth and dry eyes, and some people report a racy or anxious feeling at high doses. General reports, not medical guidance.

Aroma, flavor and terpenes

Fresh-cut pineapple and sweet citrus up front, with a dry, woody cedar note underneath that keeps it from tasting like candy. The fruit gets louder in the final weeks, so a carbon filter is worth it indoors.

Flavor notesPineappleCitrusTropicalCedar

CaryophylleneSpice, dry wood

Adds the cedar-like backbone under the fruit.

LimoneneCitrus, sweet fruit

Drives the bright pineapple and citrus top.

PinenePine, fresh resin

Sharpens the finish with a clean, woody snap.

Fruit-forward terpenes fade fast in a warm, quick dry. Dry at about 60°F and 60% humidity, then jar-cure for at least two weeks.

How to grow Pineapple Express Auto

Rated easy. It is a fast, compact plant that shrugs off small mistakes, as long as it starts in its final container and the light schedule stays steady from sprout to harvest.

Indoors

Light schedule: 18/6 or 20/4 the whole run
Container: 3-5 gallon fabric pot, no transplant
Early growth: 72-82°F, 55-65% RH
Flower climate: 70-80°F, 40-50% RH
Training: Gentle LST in weeks 2-4; never top
Feeding: Light; airy soil or coco

Outdoors

Plant out: Once nights hold above 50°F
Size: 3-5 ft in full sun
Harvest: 10-12 weeks after sprouting
Runs per season: Two or more where summers are long
Best fit: Northern gardens, patios, balconies
Watch for: Spring cold snaps; keep pots mobile

Read the full indoor grow guide

Pineapple Express Auto is a good match for a first grow or a small space. Indoors it usually stays 2 to 4 feet, which fits a 2×2 or 3×3 ft tent, and it is ready 9 to 10 weeks from seed. With good light it can produce roughly 1.3 to 1.6 ounces per square foot.

Light and climate

Schedule: 18/6 or 20/4 from day one to harvest. The plant flowers on its own, so there is no flip.
Intensity: roughly 400-600 PPFD for seedlings, rising to 700-900 PPFD in flower under LED.
Climate: its Hawaiian side likes warmth, so keep days at 72-82°F early on and 70-80°F with 40-50% RH in flower.

Containers and training

Plant the germinated seed straight into its final 3 to 5 gallon pot. Autos have no spare time to recover from transplant shock, and a stunted seedling stays small. Use low-stress training only in weeks 2 to 4, tying the main stem down to open the canopy, then let it grow. Skip topping and heavy defoliation.

Feeding

Start with a light, airy mix and feed at reduced strength. Raise it slowly once flowers form if the lower leaves begin to pale. Overfeeding is the most common way to stall a small autoflower.

Harvest

Start checking trichomes with a loupe from about week 8. Mostly cloudy heads keep the effect bright and energetic; waiting for a few amber heads gives a slightly mellower finish.

Seed to jar in about 14 weeks

A typical indoor run on 18/6 or 20/4. Autoflowers set their own timing, so most plants are ready 9 to 10 weeks after sprouting with no veg length to plan.

Germinate1 wkSeedling1 wkEarly growth2 wkFlower6 wkDry and cure4 wk

Week 1Week 14

Germinate weeks 1-1
Sprout, then straight into the final pot
Seedling weeks 2-2
Low, gentle light, 65-70% RH
Early growth weeks 3-4
Tie down with LST, weeks 2-4
Flower weeks 5-10
Begins on its own, lights unchanged
Dry and cure weeks 11-14
Slow dry, then jar cure

Growing Pineapple Express Auto outdoors in the US

This is where the autoflower format pays off. Pineapple Express Auto is ready about 10 to 12 weeks after sprouting regardless of day length, so it finishes in summer instead of racing fall weather. Plants usually reach 3 to 5 feet outdoors and can produce roughly 2 to 7 ounces each, depending on sun, pot size and how strong the start is.

In short-season states like Minnesota, Maine or the Colorado high country, one well-timed run planted in late May or June can finish before the first frost. Where summers are long, plant again as soon as you harvest for a second or even third crop. Its compact frame is also easy to keep in pots on a balcony, deck or rooftop where a 6-foot photoperiod plant would never fit. Our outdoor planting guide has planting windows by USDA zone.

Look up your state’s home-grow rules and plant limits before you plant; they change a lot from state to state.

Will it finish where you live?

ExcellentInland California and the Southwest

Warm, dry weather suits its Hawaiian side, with room for spring, summer and early fall runs.

GoodColorado Front Range and Utah valleys

Intense sun and low humidity help; cool mountain nights can slow early growth.

ExcellentMidwest

A June planting finishes by late summer, well ahead of cold, wet autumn weather.

GoodNortheast

Short summers are no problem; plant after the last frost and harvest before September rain.

GoodSoutheast and Gulf Coast

Heat-tolerant and quick, though midsummer humidity means spacing pots for airflow.

Check your state's home-grow rules before you plant. Laws by state

Who Pineapple Express Auto is for

Balcony and patio growersA 3-5 ft outdoor frame in a single pot suits small outdoor spaces.
Northern and short-season gardensFinishes 10-12 weeks after sprouting, ahead of most fall frosts.
Beginners who want a quick winRated easy, with no light flip and a harvest 9-10 weeks from seed indoors.
Fruit-forward flavor fansTropical pineapple and citrus over a cedar finish, from a plant that is fast to grow.

Keep exploring

Autoflower seedsCompact plants that flower on their own Fast-flowering seedsStrains that finish quickly Beginner seedsForgiving genetics for a first grow When to plant outdoorsPlanting dates by USDA zone Strain finderMatch a strain to your space and climate

Pineapple Express Auto strain data sheet

Genetics

Seed type: Autoflower
Genetics: Sativa-dominant hybrid (about 60-70% sativa, with ruderalis)
Lineage: Trainwreck x Hawaiian x Ruderalis

Potency & profile

THC: 18-20% (supplier reported)
CBD: 0.1-1%
Commonly reported effects: Creative, Energetic, Happy, Uplifted
Flavors: Cedar, Citrus, Pineapple, Tropical
Dominant terpenes: Caryophyllene, Limonene, Pinene

Growing

Flowering time: 9-10 weeks from seed
Height: 2-4 ft indoors, 3-5 ft outdoors
Difficulty: Easy
Climate: Warm, 70-82°F, 40-50% RH in flower
Best USDA zones: 4-11 (short seasons OK)
Outdoor harvest: 10-12 weeks after sprouting

Yield

Indoor yield: 1.3-1.6 oz per sq ft
Outdoor yield: 2-7 oz per plant

Ranges are typical for this strain and vary with phenotype, environment and technique.

Pineapple Express Auto FAQ

Is Pineapple Express Auto indica or sativa?

It is a sativa-dominant hybrid, usually described as about 60-70% sativa, with ruderalis added for autoflowering. Expect an upbeat, energetic effect from a plant that stays compact.

How strong is Pineapple Express Auto?

Our supplier reports THC around 18-20% and CBD between 0.1% and 1%. Final potency depends on phenotype, light and harvest timing, so treat the range as typical rather than guaranteed.

How long does Pineapple Express Auto take to flower?

Indoors, most plants are ready 9 to 10 weeks from seed on an 18/6 or 20/4 schedule, with no flip. Outdoors, plan on a harvest about 10 to 12 weeks after sprouting.

How much does Pineapple Express Auto yield?

Indoors, a strong setup can produce roughly 1.3 to 1.6 ounces per square foot. Outdoors, plants can produce roughly 2 to 7 ounces each, with the top of that range coming from full sun, larger pots and a stress-free start.

Is Pineapple Express Auto good for beginners?

Yes. It is rated easy, stays small and needs no light schedule change. The two habits that matter most are planting straight into the final pot and feeding lightly.

What does Pineapple Express Auto taste like?

Sweet pineapple and citrus lead, with a tropical fruit middle and a dry cedar finish. Caryophyllene, limonene and pinene are the terpenes most often reported.

Can I grow Pineapple Express Auto in a short northern season?

Yes, that is one of its strengths. It finishes 10 to 12 weeks after sprouting, so a late May or June planting can come down before fall frost in most northern states, and longer seasons allow more than one run. Check your state's home-grow rules first.

Why is it called Pineapple Express?

The name comes from the 2008 stoner comedy film Pineapple Express, which made it widely known. The strain lives up to it with a pineapple-forward aroma drawn from its Trainwreck and Hawaiian parents.

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