How to Grow Critical Purple Regular
Critical Purple Regular is an indica-dominant strain (70% indica), a cross of the heavy-yielding Critical with Purple OG. It carries a 15 to 20% THC level, a coffee, earthy and sweet flavor, and a deeply soothing, deeply relaxing effect. As a regular strain it produces both male and female plants, which makes it a favorite for breeders who want to preserve or cross this line. This guide walks you through the whole grow, from germinating the seeds to the final cure.
It stays a manageable 1.5 m, flowers in 8 to 10 weeks, and finishes outdoors in October with an exceptionally heavy yield. Its stable, unmodified genetics and rich coffee-and-earth profile are exactly what breeders look for in a regular strain.
Recommended Strains
Critical Purple Regular
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THC | 15% - 20% (Medium) |
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Type | Regular |
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Yield | High |
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Phenotype | 70% Indica / 30% Sativa |
Critical Purple Kush x Bruce Banner Regular
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THC | 25% - 27% (High) |
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Type | Regular |
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Yield | High |
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Phenotype | 20% Indica / 80% Sativa |
Critical Purple Regular at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this rich, coffee-forward indica, taken straight from the strain’s grow data.
| Seed type | Regular (photoperiod) |
|---|---|
| Genetics | Critical x Purple OG |
| Phenotype | 70% Indica / 30% Sativa |
| THC | 15–20% (medium) |
| Flowering time | 8–10 weeks |
| Outdoor harvest | October |
| Height | up to 4.92 ft (1.5 m) |
| Yield indoor | 1.64–1.97 oz/ft² |
| Yield outdoor | 24.69–29.98 oz/plant |
| Climate | Temperate |
| Flavors | Coffee, earthy, sweet |
| Effects | Deeply soothing and relaxing |
These are regular seeds, so they produce both males and females, the natural choice for breeding and preserving a line. Its 70% indica lean places it among the indica seeds, and its exceptionally heavy harvest earns it a spot with the high-yielding seeds. If you are still weighing options, the find your strain tool helps you match it against the rest of the catalog.
Promos & Deals
How to Germinate Critical Purple Regular Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Critical Purple Regular seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in two to five days.
Once the taproot is a few millimeters long, move each seed root-down about 1 cm deep into a small pot of light, airy medium. Keep it lightly moist rather than soaked, hold humidity around 65 to 70%, and give soft light while the first true leaves open. Its vigorous, Critical-backed genetics make for a strong, dependable seedling.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Keep seedlings warm and humid, but never waterlogged.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Critical Purple Regular in the Vegetative Stage
As a photoperiod plant, you control the veg stage with the light schedule. Keep Critical Purple Regular on 18 hours of light a day for as long as you want it to grow, aim for day temperatures of 68 to 79°F, and hold humidity around 50 to 60%. It suits a temperate climate, so steady, moderate conditions work in its favor. As a 70% indica it grows into a compact, bushy plant, settling around 1.5 m.
This is the stage to shape the plant. Because it stays short and bushy, topping early and using low-stress training to spread the lower branches opens up the canopy, improves airflow, and encourages even, chunky colas. Give it room so light reaches the inner buds, and its resinous indica structure rewards the effort.
Identifying the Sex of Your Plants
Because Critical Purple Regular is a regular strain, each seed can grow into a male or a female, so part of the job is to identify the sex before flowering goes far. Around one to two weeks into 12/12, small pre-flowers appear where the branches meet the main stem. Females show a tiny teardrop-shaped calyx with a pair of white hairs, while males form small round pollen sacs on a short stalk.
If your goal is buds, remove the males early, before the sacs open, so they cannot pollinate the females and fill your flowers with seeds. If you are breeding, this is exactly where regular seeds earn their place: you keep a healthy male to collect pollen and preserve or cross this line, something feminized seeds cannot offer. Either way, check daily once pre-flowers show, as a single open male can pollinate a whole room.
Flowering and Buds of Critical Purple Regular
Indoors, flip Critical Purple Regular to a 12/12 light cycle to trigger flowering, which runs 8 to 10 weeks. Outdoors it ripens in October. As an indica-dominant plant it fills out with dense, chunky colas, often showing purple hues from its Purple OG side as the nights cool.
Through bloom, drop humidity to 40 to 45% and keep air moving so the thick buds stay dry and mold-free. The flowers build a rich, roasted coffee aroma over a deep earthy base with a sweet undertone, a warm, after-dinner profile.
At 15 to 20% THC it sits in the medium range, giving a deeply soothing, deeply relaxing effect, a heavy, physically mellow feel that reflects its strong indica dominance.
Common Problems and Pro Tips
Critical Purple Regular is a rewarding grow, but its dense buds, rich aroma and regular genetics point to a few things worth watching.
- Protect the dense buds: its chunky indica colas can trap moisture, so keep humidity down and air moving in late flower to avoid mold.
- Control the smell: its roasted coffee-and-earth nose carries in flower, so a carbon filter helps indoors if odor matters.
- Watch for males: as a regular strain it will throw males, so check pre-flowers daily and pull them early unless you are breeding.
Expert tip: cool nights late in flower bring out its purple hues, and its coffee-earth profile rewards a slow finish. Dry and cure patiently so the roasted coffee and sweet notes hold up over its earthy base.
Aroma, Flavor and Effects
The nose is warm and rich: a roasted coffee note up front over a deep earthy base, with a sweet undertone rounding it out. It is a bold, after-dinner profile that leans dark and savory rather than fruity, the kind of aroma that fills a room.
The flavor follows the nose, roasted coffee and earth with a sweet finish on the exhale. On the effect side it is deeply soothing and deeply relaxing, a heavy, physically mellow feel that reflects its 70% indica lean. Because THC runs a medium 15 to 20%, it stays rich and grounding rather than overwhelming.
Dominant terpenes
Critical Purple Regular carries an unusually complex terpene profile. Limonene adds a subtle citrus brightness, Linalool a soft floral touch, and Terpinolene a fresh, herbal lift, while Borneol and Eugenol bring warm, spicy-camphor and clove-like notes that deepen its earthy, coffee-rich base. Nerolidol rounds it out with a woody, floral softness. A supporting cast of Cedrene, Terpineol, Camphene, Citral, Fenchol and Phytol fills in the edges of its coffee, earthy, sweet character.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. As a vigorous, high-yielding indica Critical Purple Regular is a hearty feeder, so read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Critical Purple Regular builds a good coat of resin, so its trim is worth keeping rather than tossing. The sugar leaves you take off while manicuring hold trichomes and suit Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the roasted coffee flavor intact, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Critical Purple Regular
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. Indoors this lands 8 to 10 weeks after the flip, and outdoors the plants are ready in October.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the coffee, earthy and sweet aromas that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the roasted coffee and sweet notes really come together, and it is the step most growers rush.
Frequently Asked Questions
Why are Critical Purple Regular seeds not feminized?
Critical Purple Regular is sold as a regular strain, so it produces both males and females. That is exactly what breeders want: a male lets you collect pollen to cross or preserve the line, which feminized seeds cannot do. Many growers also value the vigor and stable, unmodified genetics of a regular strain.
How do you identify the sex of Critical Purple Regular plants?
About one to two weeks into 12/12, check where the branches meet the stem on Critical Purple Regular. Females show a small teardrop calyx with two white hairs, while males form round pollen sacs on a short stalk. If you are growing for buds, remove the males early so they cannot pollinate your females.
How long does Critical Purple Regular take to flower?
Critical Purple Regular flowers in 8 to 10 weeks once you switch it to a 12/12 light cycle indoors. Grown outdoors, it is ready in October. As an indica-dominant plant it fills out with dense, chunky colas, often showing purple hues from its Purple OG side as the nights cool during bloom.
How much does Critical Purple Regular yield?
Critical Purple Regular is exceptionally high-yielding, giving around 1.64 to 1.97 oz/ft² indoors. Outdoors a single plant can reach a massive 24.69 to 29.98 oz in the right conditions. Training the compact frame into an even canopy early helps its chunky colas fill out to their full potential.
How strong is Critical Purple Regular?
Critical Purple Regular has a THC level of 15 to 20%, which sits in the medium range. The effect is deeply soothing and deeply relaxing, a heavy, physically mellow feel that reflects its 70% indica lean. It is rich and grounding rather than overpowering, making it an evening, after-dinner kind of strain.
What does Critical Purple Regular taste like?
Critical Purple Regular leads with a roasted coffee flavor over a deep earthy base, finished with a sweet undertone. It is bold and dark rather than fruity, a true after-dinner profile. Both the aroma and flavor deepen noticeably as the buds cure slowly after harvest, bringing the coffee richness forward.
