Take Loompa's Headband, the Loompa Farms selection, also called Underdawg OG, and put it over Runtz, the candy plant the whole modern sweet-flavour category was built on. That is Loompa’s Headband x Runtz. Every parent CSI use is a cut they keep alive themselves, so nothing in this pack is a reconstruction of a famous name.
Order matters in a cross name. In Loompa’s Headband x Runtz the Loompa's Headband side supplied the seed and Runtz the pollen, and the reciprocal - the same two plants the other way round - is a separate breeding decision with its own results.
Genetic Lineage
- Mother: Loompa's Headband. The Loompa Farms selection, also called Underdawg OG. It traces back to OG Kush x Sour Diesel, roughly sixty-forty indica.
- Father: Runtz. The candy plant the whole modern sweet-flavour category was built on. Parentage: Zkittlez x Gelato #33. Rated intermediate and sensitive to humidity swings and temperature stress - keep the room steady.
- What the cross is reaching for. One side brings the structure and the other brings the nose. The plants worth keeping out of a pack are the ones that hold both rather than picking a side.
Flavor and Aroma Profile
Two distinct smells, and a pack will give you both plus everything between.
- The Aroma. Earthy and piney with citrus, a little fuel underneath, and a spiced lemon-diesel note over the whole thing from the Loompa's Headband side, against sour berry and sweet fruit on a creamy base, with a peppery fuel note at the end from the Runtz side.
- The Taste. Lemon-diesel opening onto herbal kush and earth, spiced at the close up front, turning to sweet berry and cream, finishing with a light gassiness through the exhale.
The two halves, side by side
- Timing. Runtz runs eight to nine weeks, with fast plants at fifty-five to sixty days, and that is the half of this cross you can actually plan around.
- The smell is a negotiation. Rich earth with pine and citrus over a hint of fuel, and a spicy lemony diesel note across all of it on one side against sugary fruit and sour berry over creamy vanilla, closing on a peppery gas note on the other. Neither wins outright in every seedling.
- Build. On the Loompa's Headband side: indica-leaning, at the more manageable end of the OG family. On the Runtz side: manageable medium height with sturdy lateral branching; dense buds under a serious frost, deep greens and purples. Select early rather than trying to train your way out of it.
- They pull differently. Growers put Loompa's Headband at focused; real indica weight and Runtz at balanced and even. Which end a plant lands on is the main variable.
Cultivation and Growth Traits
- Plant Structure. The two parents disagree here, so plan for range. Loompa's Headband is one of the better-behaved OGs - it leans indica and does not run away from a normal tent. Runtz is a manageable plant with strong laterals, carrying dense flower that frosts hard and colours green through purple.
- Training. Worth the effort early - it is the difference between an even canopy and three colas and a lot of leaf.
- Flowering Time. Runtz runs eight to nine weeks, with fast plants at fifty-five to sixty days. Start checking trichomes a week before you expect to be ready.
Effects and Experience
- The Mind. Growers describe Loompa's Headband as focused; real indica weight.
- The Body. Runtz is reported as balanced and even, and that is the side supplying the weight here.
In the pack
Feminized seeds from Humboldt CSI. Their library is clones first and crosses second, which is why the names on their packs read like a list of plants rather than a list of products. Authentic Humboldt CSI genetics.
Loompa’s Headband x Runtz – Humboldt CSI
- Brands CSI Humboldt
- Product Code: 0101223751423
- Availability: 1
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$100.00
Tags: cannabis seeds, feminized seeds, Humboldt CSI, CSI Humboldt, Loompa's Headband, Runtz, strain guide

