Blue Streak by Mdanzig
If we're talking about the foundational building blocks of modern autoflowers, you absolutely have to pay your respects to Blue Streak. Back before every breeder on the planet was dropping autos, Mdanzig was in the trenches collaborating with the legendary Joint Doctor. While the Joint Doctor put out his version as Blue Ryder, Mdanzig released his cut of the project as Blue Streak—a historic cross of Masterlow and DJ Short’s legendary Blueberry. This wasn't some gimmicky low-yielder; it was one of the very first times we saw actual craft quality in a ruderalis-backed plant.
Growing this girl was a trip back in the day. She didn't need any light flips, just slamming her under 18 or 20 hours of light and watching her race to the finish line. Most growers pulled her down in about two and a half months from seed, with flowering kicking into high gear around the six-week mark. Because Mdanzig released these exclusively as regular, non-feminized seeds, old-school pollen chuckers used Blue Streak males to jumpstart entirely new lines of autoflowering genetics. The forums used to be flooded with grow logs showing off those classic, stout indica structures that reeked of sweet berry funk and earthy ruderalis undertones.
These days? Finding authentic Blue Streak seeds is like hunting for a unicorn. Mdanzig famously pulled a lot of his gear off the market after dealing with forum drama and people ripping off his unfeminized lines without giving credit. It’s practically considered an extinct strain now, surviving only in the whispered legends of boards like THCFarmer and old r/Autoflowers threads. But anytime you pop a modern, fruit-forward auto that finishes in record time with killer resin, just know that Blue Streak’s DNA is probably hiding somewhere in that family tree.
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Similar strains
| Breeder | Mdanzig |
|---|---|
| Type | ruderalis/indica/sativa |
| Flowering time | ±75 days |
| Environment | Outdoors |
| Lineage | Masterlow × Masterlow |
| Descendants | BlueBuChu, Dane's Fruity, Zenseeds - Brutalis Automatic, Blue Bear OG, Care Bear, Blue Dwarf, Bluemoonshine Ryder, Blue Rhino |
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🧬 Explore the family: Masterlow · Masterlow · BlueBuChu · Dane's Fruity · Zenseeds - Brutalis Automatic · Blue Bear OG · Care Bear · Blue Dwarf · Bluemoonshine Ryder · Blue Rhino
Ancestry Pedigree
Mdanzig
Joint Doctor
Super Sativa Seed Club
Original Strains
The Seed Bank
Unknown or Legendary
Original Strains
Original Strains
Dutch Passion
Homegrown Fantaseeds
Original Strains
Mdanzig
Growing Blue Streak: what to expect
As an indica-leaning plant, expect a modest stretch after the flip (roughly 50–100%) and dense bud structure — which makes late-flower humidity discipline the main risk: keep RH in the 40s once buds fatten to stay ahead of mold. Growers familiar with Masterlow or Masterlow will recognize much of its behavior. Whatever the listing says, the cut in YOUR tent is the ground truth: log feedings, readings, and photos, and let the trends — not the label — drive decisions.
Blue Streak FAQ
How long does Blue Streak take to flower?
Blue Streak typically flowers in around 75 days after switching to a 12/12 light schedule. Individual phenotypes vary, so judge harvest readiness by trichome color, not the calendar.
Is Blue Streak an indica or a sativa?
Blue Streak is listed as ruderalis/indica/sativa.
What are the parents of Blue Streak?
Blue Streak was bred from Masterlow × Masterlow by Mdanzig.
What environment does Blue Streak like?
Standard cannabis bands work well: VPD 0.8–1.1 kPa in veg and 1.0–1.4 kPa in flower, with humidity stepping down from 65–75% as a seedling to 40–50% in late flower. See the stage-by-stage table on this page.
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