The Cross
AK Bean Brains crossed Thunderhole with MTF and Assman. Goal was heirloom preservation. Alaskan genetics dominate. Thunderhole base cut meets Matanuska Thunderfuck for terp complexity. Assman locks in stability. Buy Thunderhole seeds if you chase raw Alaskan lines. No confirmed yield data or potency. Breeder claims focus on structure over bag appeal. They hit that mark.
Produced 2012-2020. Unconfirmed if stabilized beyond F1. Data gaps are real here.
What Each Parent Brings
- Thunderhole: Base cut. Local Alaskan landrace influence. Compact nodes, cold tolerance.
- MTF (Matanuska Thunderfuck): Heirloom from Matanuska Valley. Chocolate and sangria terpenes. Short, stout plants under two feet. High resin for preservation.
- Assman: AK Bean Brains stud male. Adds vigor, dense bud structure. Stabilizes heirlooms without diluting terps.
No THC tests on record. Flower time unknown. Expect 55 to 65 days based on MTF parent.
The Phenotypes
Three main types show up. Stout MTF doms run short and branchy. Taller Thunderhole leans stretch more, looser buds. Assman hybrids pack resin but vary in aroma.
Run the short bushes outdoors. Cut the stretchers unless space allows. Variation is normal for old crosses. No uniform IBL here.
Run These
- Compact MTF phenos: Indoors or Alaska-style greenhouses.
- Resin-heavy mids: Extraction stock.
Cut These
- Airplane plants: Too stretchy, low density.
- Faint terps: MTF should punch chocolate. Weak ones go.
Finding the Keeper
Germ fast. Vault storage holds viability. Look for taproots over one inch day three.
Vegetative: Short internodes, dark green leaves. MTF doms stack nodes tight.
Flowering: Frost by week four. Aroma shifts chocolate to sangria. Keepers resin the mains heavy, side buds firm.
Structure matters. Stout stems resist wind. Trim fans early for light penetration.
In the Garden
Run small. These reward low input. Cold nights bring out terps. Expect bushy fills, not towers. Yields modest, quality high. No nute burns easy. Alaskan blood handles stress.
The Experience
Heavy body lock. Clear head early, couch later. Terps drive chocolate bite with fruit edge. Potent for heirlooms. No race effects.
Vault Release Details
These Thunderhole seeds sat in my personal vault. Acquired 2012 to 2020 from AK Bean Brains. Stored dry, cool, dark. Never shelved for retail. Held as breeding stock and preservation. Legislation shifts what ships legally. This release clears vault space. Once sold, gone permanent. No restock. Serious collectors grab now. Thunderhole AK Bean Brains seeds and Thunderhole MTF Assman strain won't circle back. AK Bean Brains Thunderhole review from real runs: Solid heirloom cross, holds up.
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