How to Grow Star Killer x Do-Si-Dos
Star Killer x Do-Si-Dos is a 70/30 indica-dominant hybrid that crosses two heavyweights, Star Killer and Do-Si-Dos. It pairs a citrus, earthy and herbal OG flavor with a creative, energetic, uplifted effect. THC runs from 30 to 32%, placing the Star Killer x Do-Si-Dos strain firmly in the high range, so it is one of the most potent seeds you can grow. This guide covers the full grow, from germinating the feminized seeds to the final cure.
It grows to around 4.92 ft, finishes flowering in 8 to 10 weeks and gives a high yield of dense, resin-drenched buds. If you like these genetics, Blimburn also offers the Do-Si-Dos cross Wedding Cake x Do-Si-Dos.
Recommended Strains
Star Killer x Do-Si-Dos
|
THC | 30% - 32% (High) |
|
Type | Feminized |
|
Yield | High |
|
Phenotype | 70% Indica / 30% Sativa |
Star Killer
|
|
THC | 23% - 29% (High) |
|
|
Type | Feminized |
|
|
Yield | Medium |
|
|
Phenotype | 70% Indica / 30% Sativa |
Star Killer x Do-Si-Dos at a Glance
Before you plant anything, it helps to see the full picture in one place. Here is the quick profile for this feminized indica hybrid, taken straight from the strain’s grow data.
| Seed type | Feminized |
|---|---|
| Genetics | Star Killer x Do-Si-Dos |
| Phenotype | 70% Indica / 30% Sativa |
| THC | 30–32% (high) |
| Flowering time | 8–10 weeks |
| Outdoor harvest | October |
| Height | up to 4.92 ft (1.5 m) |
| Yield level | High |
| Yield indoor | 1.47–1.8 oz/ft² |
| Yield outdoor | 10.58–15.87 oz/plant |
| Climate | Temperate |
| Dominant terpenes | Caryophyllene, Limonene |
| Flavors | Citrus, Earthy, Herbal |
| Effects | Creative, Energetic, Uplifted |
| Difficulty | Beginner-friendly |
These are feminized seeds, so every plant you grow will flower, and its 70% indica makeup places it with the indica seeds. At 30 to 32% THC it sits right at the top of the high THC seeds.
Promos & Deals
How to Germinate Star Killer x Do-Si-Dos Seeds
A healthy harvest starts at germination. The paper towel method is hard to beat: fold the Star Killer x Do-Si-Dos seeds inside two damp sheets, slide them between two plates, and keep them somewhere dark at 70 to 79°F. A taproot usually appears in one to five days.
Once the root is a few millimetres long, move each seed into its starter pot with the root pointing down and cover it with about 2 cm of soil. Keep the medium lightly moist, not soaked, and hold humidity around 65 to 70% while the first true leaves open. Because these are feminized seeds, you can skip sorting out males later and give every sprout your full attention.
Starter tips
- Use plain, lightly pH-balanced water (pH 5.5 to 6.5) for the first week.
- Give seedlings gentle light, not a full-power lamp pressed overhead.
- Hold off on nutrients until the second set of serrated leaves appears.
Growing Star Killer x Do-Si-Dos in the Vegetative Stage
Star Killer x Do-Si-Dos likes a temperate climate with warm, bright summers. Its OG and Do-Si-Dos heritage prefers drier air, so aim for day temperatures of 68 to 81°F and keep veg humidity in the 50 to 60% band. An airy substrate with perlite, peat or coco coir holds moisture without drowning the roots.
Its temperate nature suits a range of US regions:
- Northern California (Emerald Triangle): the long, mild season lets this resin-heavy indica fatten its colas comfortably for an October harvest.
- Southern Oregon: warm, dry summers give clean growth and bright terpenes, so finish and harvest before the autumn rains set in.
- Colorado Front Range (Denver): warm days and cool nights suit it, and those cool late nights can deepen color; start early so it finishes before the first hard frost.
At around 4.92 ft this is a moderate, sturdy indica plant. Top it once it has five or six nodes, and use low-stress training to even the canopy and spread the branches so every bud site gets light, which is how you reach its high, resin-heavy yield.
Flowering and Buds of Star Killer x Do-Si-Dos
Once you switch to a 12/12 light cycle, Star Killer x Do-Si-Dos finishes in 8 to 10 weeks. Expect some stretch early on, then it packs on dense, chunky buds that drench themselves in resin, the hallmark of its ultra-potent parents, over a citrus and earthy-herbal aroma.
Drop humidity to 40 to 45% during flower and keep airflow moving through the canopy, which matters because the dense buds hold moisture. Support the heavier branches as the colas fatten, and outdoors plan for an October harvest.
At 30 to 32% THC it frosts over with an exceptionally heavy resin layer, so judge ripeness by the trichomes rather than the calendar.
Common Problems and Pro Tips
Star Killer x Do-Si-Dos is forgiving to grow, but its dense, resin-heavy buds and extreme potency point to a few things worth watching.
- Mould in dense buds: the chunky indica colas pack tight and hold moisture, so keep a fan moving, defoliate to open the canopy and hold humidity below 45% late in flower.
- Feeding: both parents like calcium and magnesium, so a light Cal-Mag supplement heads off the leaf spotting these OG-leaning genetics can show; start feeds low and build up.
- Pests: check leaf undersides weekly for spider mites, and watch the dense buds for caterpillars outdoors, since they burrow into tight colas.
Expert tip: this is an extremely resinous plant, among the frostiest you can grow, so it is a superb hash candidate; save every scrap of trim. Because it is so potent, a slow, careful cure is worth the patience, and letting night temperatures drop to around 59 to 64°F in the final two weeks can bring out color in the dense buds.
Aroma, Flavor and Effects
The nose is pungent and layered: bright citrus up front over a deep, earthy, herbal OG base from its Star Killer and Do-Si-Dos parents. It reads savory and resinous rather than sweet, and it sharpens as the buds cure in the jar.
The flavor follows, citrus and earthy with a herbal, peppery finish. On the effect side it is creative, energetic and uplifted, a surprisingly bright lift for a 70% indica, but at 30 to 32% THC it is seriously strong, so go slow and start with a small amount, especially if you are new to potent strains.
Terpene profile
Two terpenes lead this profile, and each pulls its weight. Caryophyllene brings a warm, peppery, spicy depth that anchors the earthy OG base and gives the strain its savory bite; and Limonene lifts it with a bright, fresh citrus note that keeps the heavy resin from feeling flat. Together they make for a citrus-over-spice profile that is pungent, lively and true to its potent OG heritage.
Nutrient Schedule
Treat the figures below as a starting map, not a rulebook. Star Killer x Do-Si-Dos takes a moderate feed well, but read the plant first: tip burn means back off, while pale, slow growth means it wants a little more. All values use EC.
| Stage | EC |
|---|---|
| Seedling | 0.4–0.6 |
| Growth | 0.8–1.2 |
| Early flower | 1.2–1.4 |
| Full flower | 1.4–1.6 |
| Flush | 0.0–0.4 |
Keep the pH around 6.0 to 6.5 in soil and 5.5 to 6.0 in hydro so the roots can actually take up what you feed.
What to Do With Your Trim: Extracts and Hash
Star Killer x Do-Si-Dos is one of the most resinous plants you can grow, so its trim is pure gold for extracts. The frosty sugar leaves you take off while manicuring are packed with trichomes and are ideal for Ice Water Hash, where cold water and agitation separate the resin heads into a clean, solventless concentrate. Pressing that hash into rosin keeps the citrus-and-spice flavor intact, and this strain’s sheer resin makes for potent, top-shelf results, or you can run a solvent extraction if that is your setup. The bare stems will not extract, but chopped and composted they feed organic matter back into the soil for your next grow.
Harvesting, Drying and Curing Star Killer x Do-Si-Dos
Timing the harvest comes down to the trichomes. Grab a loupe and watch the heads turn from clear to milky white; a scattering of amber signals peak ripeness. Outdoor plants usually reach that point in October, while indoor runs land at the end of the 8 to 10 week flowering window.
After the cut, hang the branches in a dark room at 59 to 68°F with humidity near 50% and gentle air movement. Slow beats fast: drying over 10 to 14 days protects the citrus, earthy and herbal terpenes that define this strain. When the small stems snap instead of bending, move the buds into jars.
Cure in sealed glass, opening the jars daily for the first week to let moisture escape, then easing off as the aroma deepens. Two to four weeks of patience here is where the pungent citrus-and-spice flavor really comes forward, and it is the step most first-time growers rush.
Frequently Asked Questions
Is Star Killer x Do-Si-Dos easy to grow for beginners?
Yes, Star Killer x Do-Si-Dos is beginner-friendly to grow. The feminized seeds mean every plant flowers, and it stays manageable at around 4.92 ft. The main jobs are keeping airflow around its dense buds and a light Cal-Mag feed. Just remember it is extremely potent, so new consumers should go slow.
How long does Star Killer x Do-Si-Dos take to flower?
Star Killer x Do-Si-Dos flowers in 8 to 10 weeks indoors once you switch to a 12/12 light cycle. Outdoors it is usually ready in October. Expect some stretch in the first weeks of flower, so train the canopy before you flip the lights to keep it even and productive across every bud site.
How much does Star Killer x Do-Si-Dos yield?
Star Killer x Do-Si-Dos is a high yielder. Indoors it gives 1.47 to 1.8 oz/ft² under good light, and outdoors each plant produces 10.58 to 15.87 oz/plant. Training to an even canopy so light reaches every dense bud site is the key to hitting the top of its resin-heavy range.
How strong is Star Killer x Do-Si-Dos?
Star Killer x Do-Si-Dos is extremely strong, with a high THC level of 30 to 32%, among the most potent you can grow. The effect is creative, energetic and uplifted, a bright lift for an indica. Because of that potency, start with a very small amount, especially if you are new to high-THC strains.
What does Star Killer x Do-Si-Dos taste and smell like?
Star Killer x Do-Si-Dos leads with bright citrus over a deep, earthy, herbal OG base, driven by caryophyllene and limonene. It is pungent and savory rather than sweet, with a peppery finish, and that citrus-and-spice character sharpens and deepens as the buds cure slowly in the jar.
Can I grow Star Killer x Do-Si-Dos outdoors?
Yes, Star Killer x Do-Si-Dos does well outdoors in a temperate climate with warm summers. Its moderate 4.92 ft height makes it easy to place, and it is usually ready in October. Because its dense, resinous buds can catch mould, give it airflow and finish before the autumn weather turns wet.
