How to Grow Blueberry Widow
Blueberry Widow is the name growers use for exactly what it says: Blueberry crossed with White Widow, sold in the catalog as Blue Widow at Blimburn Seeds. Two legends in one plant, the berry sweetness of DJ Short’s classic over the frost and vigor of the Amsterdam icon you can still grow as White Widow.
The chemistry keeps things friendly. THC runs 12-17%, a low to medium band that has become rare and genuinely valuable: enough for a real experience, gentle enough to stay social. The effects read energetic, focused and relaxed, flower that works in the afternoon instead of ending it, draped in berry, fruity, sweet and earthy flavor.
Recommended Strains
Blueberry x White Widow
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THC | 22% - 27% (High) |
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Type | Feminized |
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Yield | High |
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Phenotype | 60% Indica / 40% Sativa |
CBD White Widow (1:1)
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CBD | 6% – 7% (Low) |
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Type | CBD Feminized |
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Yield | High |
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Phenotype | 60% Indica / 40% Sativa |
The grow has one headline number: up to 8.2 ft of height outdoors. This is a plant with ambitions of being a tree, and the guide below treats height management as a core chapter rather than a footnote. Everything else about it is pleasantly easy.
Blue Widow at a Glance
The product page numbers, with the height row deserving your attention first.
| Type | Feminized (photoperiod) |
| Lineage | Blueberry x White Widow |
| Phenotype | Indica-dominant (per the product page) |
| THC | 12% – 17% (low to medium) |
| Height | Up to 8.2 ft (2.5 m) |
| Flowering time | 8 – 10 weeks after the flip |
| Harvest month | October |
| Yield indoor | 1.15 – 1.64 oz/ft² (350 – 500 g/m²) |
| Yield outdoor | 10.58 – 14.11 oz/plant (300 – 400 g/plant) |
| Effects | Energetic, focused, relaxed |
| Flavors | Berry, earthy, fruity, sweet |
The yields are honest rather than flashy: up to 500 g/m² indoors for growers who manage the canopy well, and 300-400 grams per outdoor plant. What the numbers do not show is the bag appeal, because this cross routinely flushes blue and purple in cool autumn nights, White Widow frost over Blueberry color.
Promos & Deals
Getting Blue Widow Started
Germinate at 70-79°F in paper towels or starter plugs; taproots show within three days. Pot up in stages to a 3-5 gallon final container indoors, which also helps restrain the size. Every feminized seed flowers female.
Veg under 18 hours of light at 68-81°F and 50-60% humidity, and keep it brief: two to three weeks indoors is plenty. The Widow vigor is immediate and the vertical push starts early, so the sooner you establish a trained shape, the easier the rest of the grow becomes. Outdoors, plant after the last frost and give it room on every side.
Feeding Blue Widow by EC
A classic hybrid with a classic diet: steady, moderate feeds measured by EC, pH at 6.0-6.5 in soil.
| 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 + 3-8 | 1.4 – 1.6 | Bloom base, add PK booster |
| Flush | Final 1-2 | 0.0 – 0.4 | Plain pH-corrected water |
Nitrogen matters most during the big stretch, when the plant builds its frame; keep the transition feed going until the vertical push slows, then shift to phosphorus and potassium. Watch magnesium under LED lights, the usual first complaint of Widow crosses.
Flush well at the end. Berry terpenes blur quickly under late mineral excess, and the sweetness of a clean-finished jar is the whole reward.
Training and Flipping to 12/12
Top once above the fourth node in week 2 and again on the strongest mains a week later if you want a wider, flatter plant. Follow with low-stress training, pulling every leader toward horizontal; the young branches bend easily and set in place within days.
Flip to 12/12 at just half footprint coverage, earlier than feels natural, because the stretch that follows is serious. Flowering then runs 8-10 weeks with dense, frosty bud set along every trained branch. Hold humidity at 40-45% from mid-bloom onward; Widow-density flowers in a cool room are a mold risk without honest airflow.
Managing the Height of Blue Widow
At up to 8.2 ft outdoors, this cross outgrows expectations set by its indica-leaning label. Indoors, the full toolkit earns its keep: short veg, double topping, aggressive low-stress training, an early flip and, ideally, a screen with every shoot woven horizontal. Managed this way, the plant finishes as a flat table of colas at tent height and pays you back with the top of the indoor range.
Outdoors, decide early between two strategies. Let it run in open ground, staked and caged, and harvest a tall, column-shaped plant in October; or bend the main stem horizontal in early veg and grow it as a wide, discreet bush behind a fence line. Both work; what fails is pretending it will stay small on its own.
Harvesting and Curing Blue Widow
Start reading trichomes at week 7 of flower. Harvest at mostly cloudy with the first ambers for the energetic, focused daytime character; another week toward amber tilts the jar toward the relaxed side. Cool October nights before harvest deepen the blue and purple tones without hurting potency, a free cosmetic upgrade.
Dry for 10-14 days at 59-68°F and around 55% humidity, then cure in glass for at least two weeks with daily burps at the start. The berry note is shy at chop and unmistakable by week two; at week three the jar smells like blueberry preserves over fresh earth, and the colors have settled into their final, photogenic state.
What to Do With Your Trim
Widow genetics carry resin onto every sugar leaf, and this cross is no exception. Dry-sift for sparkling kief, wash bubble hash in the old Amsterdam tradition, or infuse butter where the berry sweetness survives beautifully into edibles. With the moderate potency, the resulting products stay friendly and easy to dose.
Aroma, Flavor and Terpenes
Nine terpenes appear on the datasheet, and six of them build the berry-earth signature. Myrcene leads with the ripe, juicy fruit depth that reads as blueberry, grounded by humulene’s dry earth and caryophyllene’s gentle spice. Pinene adds the fresh forest edge, while borneol and eucalyptol, two cool, camphor-leaning rarities, give the exhale the crisp, almost minty finish that makes this profile feel mountain-grown.
Phellandrene, phytol and valencene complete the roster as a quiet supporting cast. The arrangement is vintage rather than loud: fruit, earth and cool air instead of candy and fuel, and it rewards a patient cure with remarkable depth for such an easygoing plant.
Common Problems and Pro Tips
Blueberry Widow is a forgiving grow, but it is a tall, frosty hybrid that can reach 2.5 m, so height control and a good cure come first.
- Control the height: outdoors it can reach 2.5 m, so indoors run a short veg, top it twice, train it and flip sooner to keep it comfortably inside a tent.
- Keep air moving: its White Widow side gives frosty, resinous buds that hold moisture, so keep flowering humidity down and run a fan to prevent bud rot.
- Protect the berry aroma: its ripe blueberry character is delicate, so avoid rough handling and heat, and cure slowly so that fruit comes through.
Expert tip: it is a low to medium THC strain with real bag appeal, so quality of finish is the point. The berry side develops dramatically through a two to three week cure, so dry slowly and be patient.
Frequently Asked Questions
Is Blueberry Widow the same as Blue Widow?
Yes. Blueberry Widow is the descriptive name growers use for the Blueberry x White Widow cross that Blimburn Seeds sells as Blue Widow. Same genetics, same plant: berry sweetness from Blueberry over the frost and structure of White Widow, so whichever name you see you are looking at the same hybrid.
Is Blue Widow an indica or a sativa?
The product page lists it as indica-dominant, though the effect profile reads balanced: energetic and focused up front with a relaxed finish. In the garden, the tall frame and vigorous stretch show plenty of hybrid character, so top it and train it to keep the height manageable indoors.
How strong is Blue Widow?
Flowers test at 12 to 17% THC, a low to medium band that suits daytime sessions and newer consumers. It delivers a complete, rounded experience without the intensity of modern 25%-plus hybrids, which is precisely its charm, so it stays an easy, approachable smoke rather than a knockout.
How tall does Blue Widow grow?
Up to 8.2 ft (2.5 m) outdoors with open root space, true tree territory. Indoors, a short veg, double topping, low-stress training and an early flip keep it comfortably inside a standard tent. Plan your vertical space before you germinate, since this one really runs once it starts to flower.
How much does Blue Widow yield?
Indoor growers harvest 1.15 to 1.64 oz/ft² (350 to 500 g/m²) from a well-trained canopy, while outdoor plants deliver 10.58 to 14.11 oz (300 to 400 g) each. Honest numbers, improved by the strain’s famous bag appeal, so good light and training help you reach the top of that range.
What does Blue Widow taste like?
Ripe blueberry and sweet fruit over fresh earth, with a cool, faintly piney exhale. The berry side develops dramatically through a two to three week cure, which is when the jar earns the Blueberry half of its name, so dry slowly in a cool, dark space and give it that time.
