How to Grow Jack Herer CBD
Few names carry more weight in cannabis than Jack Herer, the strain named for the author and activist, and few are better suited to a CBD edition. The original’s clear, creative character translates naturally into balanced chemistry: this cross of Jack Herer with CBD Therapy carries 6-8% CBD alongside a similar THC share, the 1:1 ratio its catalog name announces. Full specs are on the Jack Herer CBD (1:1) seeds page at Blimburn Seeds.
The growing surprise sits in the flowering row: 6-8 weeks from the flip, remarkably fast for a 70% sativa and faster than nearly everything in the Jack Herer strains family. Outdoors that translates into a September harvest, weeks ahead of most photoperiod plants, with none of the autumn-weather worry late finishers bring.
Recommended Strains
Jack Herer CBD (1:1)
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CBD | 6% – 8% (Low) |
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Type | CBD Feminized |
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Yield | High |
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Phenotype | 30% Indica / 70% Sativa |
Cheese Diesel
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THC | 19% - 22% (Medium) |
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Type | Feminized |
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Yield | High |
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Phenotype | 40% Indica / 60% Sativa |
Add dependable harvests, a tidy 4.92 ft frame and a famously forgiving temperament, and you have one of the easiest sativas anyone can grow. Here is the full program for a healthy Jack Herer plant, from seed to cure.
Jack Herer CBD at a Glance
The datasheet, with two rows worth underlining: flowering time and harvest month.
| Type | CBD Feminized (photoperiod) |
| Lineage | Jack Herer x CBD Therapy |
| Phenotype | 30% Indica / 70% Sativa |
| CBD | 6% – 8% (1:1 ratio per the product name) |
| Climate | Temperate |
| Height | Up to 4.92 ft (1.5 m) |
| Flowering time | 6 – 8 weeks after the flip |
| Harvest month | September |
| Yield indoor | 1.31 – 1.64 oz/ft² (400 – 500 g/m²) |
| Yield outdoor | 15.87 – 19.4 oz/plant (450 – 550 g/plant) |
| Effects | Creative, energetic, uplifted |
| Flavors | Earthy, skunk |
Those yields deserve context: 400-500 g/m² indoors and up to 550 grams per outdoor plant, delivered in a flowering window two to four weeks shorter than the competition, make this one of the most efficient plants in the catalog in grams per week. Speed without a yield penalty is the whole pitch.
Promos & Deals
Getting Jack Herer CBD Started
Germinate at 70-79°F in paper towels or starter plugs; taproots appear within one to three days. Pot up progressively to a 3-5 gallon final container. The seedlings inherit the famous Jack vigor, outgrowing most neighbors in week one, and every feminized seed flowers female.
Veg under 18 hours of light at 68-81°F and 50-60% humidity. Growth is quick and upright with strong side branching once topped. Keep veg to two or three weeks indoors; with flowering this short, the plant spends so little time in bloom that a compact veg keeps the entire cycle inside three months.
Feeding Jack Herer CBD by EC
A fast bloom compresses the feeding calendar, so precision matters more than volume. Track EC, hold pH at 6.0-6.5 in soil, and bring transitions forward a week compared to slower strains.
| Stage | Weeks | EC | Notes |
|---|---|---|---|
| Seedling | 1-2 | 0.4 – 0.6 | Plain water or very light feed |
| Vegetative | 2-3 | 0.8 – 1.2 | Nitrogen-leaning base nutrients |
| Preflower | Flip + 1-2 | 1.2 – 1.4 | Transition feed through the stretch |
| Bloom | Flip + 3-7 | 1.4 – 1.6 | Bloom base, PK booster from week 3 |
| Flush | Final 1-2 | 0.0 – 0.4 | Plain pH-corrected water |
Introduce the PK booster around week 3 of flower rather than week 5; by week 6 the fastest phenotypes are already ripening and late pushes accomplish little. Watch magnesium under LED lights, and let the natural fade begin in the last ten days.
Flush properly at the end. Earthy, skunky profiles turn muddy fastest of all when minerals linger, and this strain’s clean, sharp finish is worth protecting.
Training and Flipping to 12/12
Top once above the fourth node in week 2 and open the frame with low-stress training. That single intervention is enough; the short bloom leaves no time to recover from aggressive work after the flip, and the plant’s natural shape is already productive.
Flip to 12/12 when the canopy fills around 60% of the space. The stretch is brisk but short-lived, true to the sativa share, and then the plant pours everything into flower at an almost visible pace. Keep humidity at 40-45% once buds set and air moving throughout; the classic Jack spear-shaped colas are reasonably airy, which helps, but speed-grown flower still appreciates ventilation.
Growing Jack Herer CBD Outdoors
A jack herer outdoor grow is already one of the most popular projects in cannabis gardening, and this CBD version improves the logistics dramatically. The September harvest means plants finish in late-summer warmth, before autumn rain and cold threaten anything, making this one of the safest outdoor bets in a temperate climate.
Plant after the last frost in a sunny spot, give each plant 10-15 gallons of root space or open ground, and expect 15.87-19.4 oz (450-550 g) of flower. The early finish also makes this an excellent choice for northern growers whose seasons end abruptly, and for anyone who wants their garden cleared before October.
Harvesting and Curing Jack Herer CBD
Start checking trichomes at week 5 of flower, earlier than feels natural. Fast phenotypes ripen near day 45, the rest by day 56. Harvest at full cloudy with the first ambers to keep the creative, energetic character bright; balanced flower gains little from extra amber and loses freshness.
Dry for 10-14 days at 59-68°F and around 55% humidity, then cure in glass for at least two weeks. The earthy base is present from the start, while the skunky edge sharpens noticeably in the jar, reaching the classic Jack pungency by week three. Seal the jars well; this is aromatic flower in the old-school sense.
What to Do With Your Trim
Trim from a 1:1 cultivar makes balanced, versatile material: infused oil and butter deliver gentle edibles, while dry sift and bubble hash capture the peppery, earthy resin this lineage has always carried. The September harvest leaves warm weeks for processing, so wash your hash while the weather still cooperates.
Aroma, Flavor and Terpenes
Earthy and skunk is a short flavor list backed by one of the longest terpene rosters in the catalog, nine once duplicates are consolidated. Terpinolene leads, the herbal, slightly sharp signature that has defined the Jack family for decades. Pinene adds resinous forest depth, carene a sweet, earthy warmth, and p-Cymene the dry, aromatic lift that makes the skunk note read aged and noble rather than harsh.
Eugenol contributes a trace of clove spice and terpineol a soft floral smoothing, while phellandrene, gamma-terpinene and nerolidol round out the supporting cast. The whole arrangement smells like the original Jack: turned earth, pepper and pine with a skunky backbone, intact through the CBD conversion and deeply nostalgic for anyone who knows the reference.
Common Problems and Pro Tips
Jack Herer CBD is a fast, forgiving grow, but it is a balanced 1:1 sativa with a loud aroma, so plan for the harvest window and the smell.
- Harvest on time for the balance: the value here is the even CBD-to-THC ratio, so follow the fast 6 to 8 week window and the trichomes rather than letting it over-ripen.
- Manage the stretch: as a 70% sativa it reaches up after the flip, so train the tops and give it headroom to keep the canopy even and well lit.
- Plan for the smell: its earthy, aged-skunk aroma gets loud in flower, so run a carbon filter if you need to keep the grow discreet.
Expert tip: its September harvest makes it one of the safest outdoor strains in a temperate climate, finishing before autumn rain. The pungent Jack profile peaks around week three of cure, so be patient.
Frequently Asked Questions
How much THC and CBD does Jack Herer CBD have?
The flower carries 6 to 8% CBD alongside a similar THC share, the balanced 1:1 ratio indicated in the product name. That places it at roughly a third of the original Jack Herer’s potency with a substantial CBD counterweight, so you get the flavour and lift without the full-strength intensity.
Does Jack Herer CBD get you high?
Mildly. The 1:1 chemistry delivers a light, clear-headed lift, creative, energetic and uplifted in character, without the intensity of the full-strength original. It suits daytime sessions where staying functional matters, so it is a gentle, workable option rather than a strong, heady high.
How long does Jack Herer CBD take to flower?
Just 6 to 8 weeks after the 12/12 flip, exceptionally fast for a 70% sativa and among the quickest photoperiod strains at Blimburn Seeds. With a short veg, the complete indoor cycle fits inside eleven weeks, so start checking trichomes early to catch it at your preferred ripeness.
How much does Jack Herer CBD yield?
Indoor growers harvest 1.31 to 1.64 oz/ft² (400 to 500 g/m²); outdoor plants produce 15.87 to 19.4 oz (450 to 550 g) each. Solid numbers made better by the compressed timeline that produces them, so good light and a little training to manage the sativa stretch help you reach the top of that range.
Can you grow Jack Herer CBD outdoors?
Yes, and the September harvest makes it one of the safest outdoor strains in a temperate climate. Plants finish in late-summer conditions, well before autumn rain, which especially suits northern gardens with short seasons, so it is a low-risk choice for an outdoor grow in a cooler climate.
What does Jack Herer CBD taste like?
Turned earth and aged skunk with peppery, piney edges, faithful to the classic Jack profile. The pungency builds through the cure and peaks around week three in glass, exactly as the original has always done, so dry slowly in a cool, dark space and give it that time before judging.
