Cafe Racer Auto is a Blimburn Seeds autoflower that pairs a bright citrus-fruity flavor with a big indoor yield. From Clementine x Purple Punch, it is a balanced 50/50 hybrid at a potent 19-24% THC that stays easy to grow while producing like a photoperiod indoors. A happy, relaxed, talkative effect and a predictable cycle make it a rewarding choice for beginners and experienced growers alike.
This is an autoflower, so it flowers on age rather than a change in the light cycle, which keeps the grow simple. The figures below are Blimburn breeder values; check your own pack for the exact numbers.
Recommended Strains
Cafe Racer Auto
|
THC | 19% - 24% (High) |
|
Lineage | Clementine x Purple Punch |
|
Type | Autoflowering |
|
Height | 4.92 ft | 1.5 m |
|
Yield | High |
|
Yield Indoor | 1.8 - 1.97 oz/ft² | 550 - 600 g/m² |
|
Yield Outdoor | 2.82 - 7.05 oz/plant | 80 - 200 g/plant |
|
Life Cycle | 10 - 11 weeks |
|
Phenotype | 50% Indica / 50% Sativa |
|
Medical | Anxiety, Depression, Pain |
|
Effects | Happy, Relaxed, Talkative |
|
Flavors | Citrus, Fruity, Sweet |
Cafe Racer
|
|
THC | 25% (High) |
|
|
Lineage | Grandaddy Purple x GSC |
|
|
Type | Feminized |
|
|
Height | 6.23 ft | 1.9 m |
|
|
Yield | Medium |
|
|
Yield Indoor | 1.15 - 1.47 oz/ft² | 350 - 450 g/m² |
|
|
Yield Outdoor | 24.69 - 28.22 oz/plant | 700 - 800 g/plant |
|
|
Flowering Time | 8 - 10 weeks |
|
|
Phenotype | 30% Indica / 70% Sativa |
|
|
Medical | Fatigue, Muscle Spasms, Stress |
|
|
Effects | Happy, Relaxed, Talkative |
|
|
Flavors | Citrus, Earthy, Grape |
Cafe Racer Auto Grow Info
| Trait | Cafe Racer Auto (Blimburn Seeds) |
| Genetics | Clementine x Purple Punch |
| Seed type | Autoflowering |
| Genetic profile | 50% indica / 50% sativa (balanced) |
| THC | 19-24% (high) |
| Full life cycle | 10-11 weeks from germination |
| Height | Around 1.5 m, tall for an autoflower |
| Indoor yield | High, 550-600 g/m² |
| Outdoor yield | 80-200 g per plant |
| Effects | Happy, relaxed, talkative |
| Flavor | Citrus, fruity, sweet |
These are Blimburn’s published figures for the Cafe Racer Auto line at Growlantis. When you need an exact THC percentage, height, or yield, check the specification on your own Cafe Racer Auto seed pack.
What Makes Cafe Racer Auto Worth Growing
The standout is indoor yield. At up to 600 g/m², Cafe Racer Auto produces like a photoperiod while keeping the autoflower’s simple cycle, which is rare. Add a potent 19-24% THC and a bright Clementine-and-Purple-Punch flavor, and you get a strain that delivers on quality and quantity.
The effect is balanced and sociable: happy, relaxed, and talkative, good for both daytime and easy social use rather than pure couch-lock. The flavor runs citrus, fruity, and sweet, a fresh, zesty profile from its Clementine parent. It is a little taller than most autos, which it uses to build that big yield, and it stays beginner-friendly throughout.
Is Cafe Racer Auto Indica or Sativa?
Cafe Racer Auto is a balanced hybrid, listed at 50% indica and 50% sativa, with ruderalis in the mix for its autoflower timing.
That even split shows in the plant and the high. The plant is a vigorous, productive bush, taller than most autos. The effect pairs a happy, uplifting, talkative head with a comfortable body relaxation, so it works at different times of day rather than only at night. It is a versatile all-rounder.
Flowering Time vs Full Grow Time
Autoflowers confuse a lot of growers on timing, so it is worth being precise.
- Full grow time (seed to harvest): about 10-11 weeks. This is the figure Blimburn publishes, and it covers the whole cycle from germination to a ready plant.
- Flowering stage: this happens inside that 10-11 week window, not after a separate long veg period. Cafe Racer Auto runs a little longer than the fastest autos, and that extra time helps it build its big yield.
The takeaway: do not treat 10-11 weeks as flowering and then add veg on top. Plan around the full cycle, and give it the time it wants rather than rushing the finish.
Does Cafe Racer Auto Need a 12/12 Light Cycle?
No. Cafe Racer Auto flowers on age, not day length, so it never needs a 12/12 photoperiod to bloom.
Indoors you can hold a longer schedule like 18/6 or 20/4 from seedling to harvest. Dropping to 12/12 once flowering starts only cuts daily light and costs you yield, which matters on a heavy producer. Keep the longer schedule and strong light instead.
Cafe Racer Auto Grow Timeline, Week by Week
Treat this as a development pattern, not a fixed schedule, and remember this strain runs a little longer than the fastest autos.
- 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 tall, productive frame. Start low stress training early to manage the height and open the canopy.
- Weeks 5-7: stretch and bud set. Vertical growth is strong here, so keep training. Flower sites fill in and water demand rises.
- Weeks 8-10: main flower development. Dense buds build and the citrus and fruity aroma gets strong.
- Weeks 10-11: maturation and harvest. Most plants finish here. Judge ripeness by the trichomes, not the day count.
Choosing Your Setup: Space, Light and Pots
Give this one a little room. At around 1.5 m, Cafe Racer Auto is taller than most autos, so leave vertical headroom and train early. A 2×4 ft tent suits a couple of plants with space for the stretch.
Light drives the big yield, so do not skimp. A full-spectrum LED at 30-40 watts per square foot on an 18-20 hour schedule supports the heavy flowers. Pair it with good exhaust to handle a larger, productive plant.
Plant straight into the final 5 gallon fabric pot and skip transplanting, which autos dislike. The bigger pot gives the roots room to support the yield, and fabric pots air-prune for a healthier root zone.
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 taproot reaches about 1-2 cm, plant it root-down a knuckle deep in a light mix and keep the surface moist until the seedling breaks ground. Hold off on nutrients at this stage. New to germination? Our beginner growing guides walk through it step by step.
The Vegetative Stage and Low Stress Training
Veg is short on an auto, so use these weeks to build a wide, even frame and control the height. Keep nitrogen available, hold temperatures in the low to mid 70s°F, and start training early.
Because Cafe Racer Auto stretches, low stress training pays off twice: it keeps the height in check and opens the canopy so light reaches the lower buds, which realizes its big yield. Tie the main branches outward gently. Skip topping and other high-stress cuts, since an autoflower has little time to recover before the clock flips it into flower.
Feeding and Watering Cafe Racer Auto
Feed to match the yield, but build up gradually. A heavy producer can take a fuller bloom schedule than a small auto, yet the compact auto root system still burns if you rush it. Start nutrients at about half the label strength, use a nitrogen-forward base through veg, then move to a bloom formula higher in phosphorus and potassium as flowering sets in.
Water by root-zone moisture, not a timetable. A young plant needs very little, and soaking the whole medium starves the roots of oxygen. As the plant grows large and productive, demand climbs, so increase water gradually by pot weight and how fast the top layer dries.
Flowering and Knowing When to Harvest
Flowering begins on its own around week four or five, with a strong stretch before the buds set. The citrus, fruity, and sweet aroma builds through the middle weeks, so keep air moving and run a carbon filter indoors.
As the 10-11 week finish approaches, let the plant decide. Check trichomes under a loupe and harvest when most are cloudy with a few amber. 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 protect that citrus flavor.
Growing Indoors vs Outdoors
Indoors is where Cafe Racer Auto earns its yield. Hold 18/6, manage the height with training, and the high 550-600 g/m² indoor figure is very reachable under strong light.
Outdoors, the autoflower trait lets you plant after the last frost and harvest in about ten to eleven weeks. Outdoor yields are more modest at around 80-200 g per plant, so like many autos it rewards indoor growing. Give outdoor plants full sun, well-draining soil, and a warm spot.
How Tall and How Much? Height and Yield
Height is the planning point. At around 1.5 m, Cafe Racer Auto is taller than most autos, so leave extra vertical room and train early to keep it in bounds indoors.
On yield, it is a high indoor producer: up to 550-600 g/m² indoors under strong light, and 80-200 g per plant outdoors. The longer cycle and an open, trained canopy are what let it hit the top of the indoor range, which is excellent for an auto.
Best US Climates for Cafe Racer Auto
As a productive, balanced autoflower, Cafe Racer Auto suits warm, sunny climates best outdoors, where its longer cycle has time to finish. Growers in California and the warm West get the strongest outdoor results.
The autoflower timing still helps growers in the northern states and Pacific Northwest, but the longer 10-11 week window means planting early enough to beat the fall rains. In the humid Southeast, keep airflow up around the big canopy. Indoors, it performs best with enough vertical room. For another high-yield auto, see our Break-Up Cake Auto grow guide.
Common Problems When Growing Cafe Racer Auto
A few predictable issues are easy to avoid.
Underestimating the height
Cafe Racer Auto is taller than most autos. Growers who set up for a short plant run out of vertical room. Plan for up to about 1.5 m and start low stress training early.
Expecting big outdoor yields
Outdoor returns are modest at around 80-200 g per plant. The high yield is an indoor figure, so lean on indoor light if weight is the goal.
Overfeeding early
A heavy yielder still has a small auto root system at the start. Build the feed up gradually from half strength rather than pushing nutrients early, and read the leaves.
Harvesting by the calendar
The 10-11 week window is a reference, not a cutting date. Read the trichomes and flower maturity before you cut, since phenotype and environment shift the finish.
Making the Most of Your Harvest
Do not waste the trim. A big yielder leaves plenty of resinous sugar leaf for bubble hash, dry sift, or infused oil that keeps the citrus flavor. The stems, roots, and fan leaves compost well and feed your next grow.
Is Cafe Racer Auto Right for You?
If you want a high-yield autoflower with real potency and a bright citrus-fruity flavor, yes, as long as you can give it a little vertical space and time. It produces like a photoperiod indoors on an easy auto cycle, with a balanced, sociable high. Just train it to manage the height. For another high-yield auto, see our Break-Up Cake Auto grow guide.
Frequently Asked Questions
Is Cafe Racer Auto indica or sativa?
Cafe Racer Auto is a balanced hybrid, listed at 50% indica and 50% sativa, with ruderalis for its autoflower timing, from Clementine and Purple Punch. The effect pairs a happy, uplifting, talkative head with a comfortable body relaxation, so it works at different times of day rather than only at night.
Does Cafe Racer Auto need a 12/12 light cycle?
No. Cafe Racer Auto flowers automatically with age, not day length, so it never needs a 12/12 schedule. Indoors you can hold a longer photoperiod like 18/6 or 20/4 from seedling to harvest. Reducing the light once flowering starts only lowers your daily light and costs yield.
How long does Cafe Racer Auto take to grow?
Cafe Racer Auto finishes its full seed-to-harvest cycle in about 10 to 11 weeks, a little longer than the fastest autos. That figure covers the whole cycle, not just flowering, and the extra time helps it build its big yield. Judge the finish by trichome maturity rather than the day count.
How much does Cafe Racer Auto yield?
Cafe Racer Auto is a high indoor yielder for an autoflower, at up to 550 to 600 g/m2 under strong light, and 80 to 200 g per plant outdoors. It performs best indoors. The longer cycle, strong light, and an open trained canopy are what move the indoor figure toward the top of its range.
How tall does Cafe Racer Auto grow?
Cafe Racer Auto is taller than most autos, reaching around 1.5 m. Plan for extra vertical room, start low stress training early, and expect most of the height to come during the stretch in the middle weeks. Managing the height with training is also how you realize its big indoor yield.
How strong is Cafe Racer Auto?
Cafe Racer Auto is potent for an autoflower at 19 to 24% THC. The effect is balanced rather than overpowering, pairing a happy, uplifting, talkative lift with a comfortable relaxation, which makes it versatile for different times of day and a satisfying choice for most users.
Can you clone Cafe Racer Auto?
Not usefully. As an autoflower, a cutting keeps the mother’s age, so it tries to flower straight away as a tiny plant and yields almost nothing. If you want more plants, germinate more seeds. Cloning only makes sense with photoperiod strains, not with autoflowers like this one.
