Do Si Dos Outdoor Grow: Step-by-Step Guide for Home Growers

Do-Si-Dos is absolutely worth growing outdoors if you have a warm climate, a south-facing spot with at least 6–8 hours of direct sun, and enough space for a plant that can push 8 feet tall. Photoperiod feminized plants can yield 19–21 oz per plant outdoors, and even the autoflowering version puts out a respectable 3–5 oz in a much tighter timeframe. The strain finishes in early October in most temperate climates, with a flowering window of roughly 8–10 weeks for photoperiod plants and just 50–55 days for autos. Plan your timeline around that, get your soil dialed in, and this strain is surprisingly manageable outdoors once you understand its quirks.

Is Do-Si-Dos a Good Match for Outdoor Growing?

Do-Si-Dos is an indica-dominant hybrid bred from Girl Scout Cookies and Face Off OG. That lineage means dense, resinous buds with a sweet, earthy aroma that hits the nose hard (Rythm's strain notes describe it as almost stinging the nostrils, which is accurate when a plant is at full ripeness). Dense buds are great for yield but they do create one real outdoor challenge: bud rot. If you live somewhere with late-season rain or humidity spikes in September, this strain will test your mold management. That said, growers in hot, dry climates with long summers consistently pull monster harvests from it.

The photoperiod version is the heavy hitter here. Because cannabis is a short-day plant that starts flowering as nights get longer, Do-Si-Dos photoperiod plants spend the full spring and summer in vegetative growth, then flip naturally into flower as summer winds down, targeting an early October harvest. The auto version flowers automatically based on age regardless of light schedule, usually kicking into flower around week 3–4. That makes autos ideal if your season is short or you want a fast, low-stress run. Both versions are worth considering depending on your goals.

Timing, Location, and Planting Setup

When to start based on your climate

For photoperiod Do-Si-Dos in temperate Northern Hemisphere climates, start seeds indoors 4–6 weeks before your last frost date, then transplant outdoors after the last frost has passed and nights are consistently above 50°F. Most of the US and European growing regions put that between late April and late May. You want to be outdoors by late May at the latest to maximize the vegetative window before the plant flips in mid-to-late summer. For autoflowering Do-Si-Dos, time your start date so harvest falls about 12 weeks before your first expected fall frost. Autos can be direct-seeded outdoors once nighttime temps stay above 50°F, or started indoors a couple of weeks earlier and transplanted.

A quick milestone calendar for a temperate climate (last frost: May 1, first frost: October 15) looks like this:

Picking the right spot

Do-Si-Dos is a sun hog. Put it somewhere that gets direct sun from morning through mid-afternoon at minimum. South-facing slopes or walls that radiate warmth overnight are ideal. Avoid low-lying areas that trap cold air or moisture, both of which invite mold. Wind protection matters too: a light breeze is great for stem strength and airflow, but strong gusts will snap branches once the plant is loaded with buds in October. A fence line or windbreak hedge on the north or west side is worth planning around.

Containers vs. in-ground: which is better for Do-Si-Dos outdoors?

Both work, but they involve real trade-offs. In-ground plants have access to a much larger soil volume and tend to grow bigger, which suits the photoperiod version's potential to reach 250 cm. Containers give you control over soil quality, drainage, and the ability to move the plant during extreme weather or to chase sun. For Do-Si-Dos, if you're growing photoperiod and want maximum yield, in-ground or a very large container (25–30 gallons) is the move. For autos, which stay under 3–5 feet with LST, a 10–15 gallon fabric pot is plenty.

If you go containers, fabric pots in the 10–30 gallon range are the standard for outdoor grows. Fabric pots air-prune roots and drain exceptionally well, which directly reduces the risk of root rot and overwatering. A 30-gallon cloth pot is a common choice for full-season photoperiod plants.

Soil, pH, and Outdoor Watering

Soil setup that actually works

For containers, a quality potting mix like Fox Farm Ocean Forest is a proven starting point. It comes pre-amended with nutrients that will carry your plant through the first 4–6 weeks without needing to add much. Mix in 20–30% perlite by volume to improve drainage and aeration, which Do-Si-Dos roots will thank you for. Target pH in containers between 6.0 and 6.5. For in-ground growing, test your native soil pH before planting. Amend with compost and perlite, and aim for a pH between 6.0 and 7.0, with most growers targeting 6.2–6.8 for optimal nutrient availability.

pH matters more than most beginners expect. The scale is logarithmic: a pH of 5.0 is 10 times more acidic than 6.0 and 100 times more acidic than 7.0. Even a half-point swing outside your target range can lock out phosphorus, calcium, or magnesium, which shows up as deficiency symptoms even when nutrients are present in the soil. Get a reliable pH meter and test your water and runoff regularly. For Do-Si-Dos Auto specifically, Royal Queen Seeds recommends watering at pH 6.5, which sits right in the middle of the optimal range.

Watering schedule outdoors

Outdoor watering frequency varies a lot with your climate, container size, and time of season. The basic rule is to water when the top inch or two of soil is dry, or when a container feels noticeably lighter. In hot summer months, large plants in containers may need water every 1–2 days. In-ground plants in loamy soil might go 3–4 days between watering. When you do water, water deeply and aim for about 10–20% runoff from the bottom of containers. This flushes built-up salts and ensures the entire root zone gets wet. Avoid light, frequent watering that keeps only the top layer moist and encourages shallow roots.

Feeding Schedule from Veg Through Late Flower

Do-Si-Dos is a moderate-to-heavy feeder. If you started in a pre-amended soil like Ocean Forest, hold off on additional nutrients for the first 3–5 weeks. After that, introduce a veg-focused nutrient with higher nitrogen to support the stretch of vegetative growth you'll get through May, June, and July. Here's a simplified milestone-based feeding guide for the full outdoor season:

The transition from grow to bloom nutrients is one of the most common points where outdoor growers either nail it or stall their plant's potential. The switch should happen when you see the first signs of the pre-flower stretch and early pistil development, not when you flip a timer (there is no timer outdoors). Watch the plant. When internode spacing starts increasing rapidly and the first white hairs appear at bud sites, that is your cue to start dialing back nitrogen and ramping up phosphorus and potassium. If you do need to change nutrients mid grow, aim to do it gradually and keep an eye on leaves for early deficiency or burn signals. Continuing to push nitrogen into flower leads to foxtailing, poor bud density, and harsh smoke.

For the final two weeks, stop feeding and use plain pH-adjusted water only. This is a standard pre-harvest flush that clears salt buildup from the root zone and the medium. Cannapot's outdoor growing guidance specifically recommends this two-week clean-water window before harvest, and it makes a real difference in final product quality.

Training and Managing Plant Size Outdoors

Left untrained, a photoperiod Do-Si-Dos can reach 250 cm (about 8 feet) tall outdoors. That is not necessarily a problem if you have the space and want maximum yield, but it does create canopy management and mold risk issues. Training early is almost always worth it. Here are the main techniques that work well for this strain outdoors:

• Topping: Cut the main stem above the 4th or 5th node during early veg (when the plant has 5–6 nodes). This creates two main colas instead of one and encourages a bushier, more even canopy. Topping twice creates 4 main colas. Do this in late May or June for photoperiod plants to give the plant time to recover before flowering.
• LST (Low-Stress Training): Bend and tie branches down and outward during veg to spread the canopy horizontally. This keeps height manageable and exposes more bud sites to light. For autos, LST is the preferred technique since topping can stress short-cycle plants too much. Royal Queen Seeds specifically recommends LST to keep Do-Si-Dos Auto around 80 cm.
• SCROG (Screen of Green): Set a screen about 12 inches above the canopy and weave branches through it as they grow. This creates a flat, even canopy, maximizes light penetration, and significantly improves airflow which is critical for mold prevention. Start scrogging in early veg and fill the screen before flowering begins.
• Lollipopping: In early flowering (weeks 1–3), remove lower branches and fan leaves that receive no direct light. This redirects energy to top colas and improves airflow through the lower canopy, which directly reduces bud rot risk in late flowering.

Stop any major training once flowering begins in earnest. Stressing the plant during flower slows bud development. Minor defoliation and lollipopping in early flower is fine, but stop removing leaves after week 4–5 of flowering. The plant needs every remaining leaf to fuel bud production through ripening.

Pest and Disease Prevention for Outdoor Do-Si-Dos

The pests to watch for

Aphids and spider mites are the two most common outdoor cannabis pests, and both can establish quickly in warm weather. Aphids cluster on new growth and under leaves; spider mites leave tiny webbing and stippling on leaf surfaces. For both, a weekly preventive spray of diluted neem oil or insecticidal soap during veg is your best insurance. Once in flower, stop neem sprays since they can affect bud flavor and leave residue. If you see pests in flower, switch to spinosad-based products or pyrethrins, applied carefully in the evening to avoid harming beneficial insects. Catch infestations early by checking under leaves weekly.

Mold: the real enemy for Do-Si-Dos outdoors

Bud rot (Botrytis cinerea) is the most serious threat to Do-Si-Dos outdoors, and dense indica buds are exactly what this fungus thrives in. It can destroy an infected bud within days and spread to adjacent buds rapidly. Prevention is everything because once a bud is infected, there is no cure: you cut it out and move on. The main prevention strategies are airflow, canopy management, and avoiding prolonged wet periods.

• Keep the canopy open through lollipopping and selective defoliation in early flower so air moves freely through bud sites.
• If rain is forecast for multiple days in a row in September, move container plants under a clear roof or temporary shelter if possible.
• After rain, shake or blow moisture off buds gently if they are soaked, and ensure airflow resumes quickly.
• Inspect the center of dense buds weekly from early September onward. Bud rot starts inside the bud where it is dark and moist, not on the outside where you can easily see it.
• If you find infected material, cut it out well below the affected tissue, dispose of it away from your grow, and sterilize your scissors.

Powdery mildew is a different mold problem and tends to appear earlier in the season, especially in cool, humid, cloudy conditions. Temperatures in the 41–72°F range with high humidity favor its development. It shows up as a white powder on leaf surfaces. Preventive sprays with a diluted potassium bicarbonate solution or commercial PM-targeted products help, and improving airflow is the most sustainable long-term fix. Unlike bud rot, powdery mildew caught early on leaves can be managed and stopped before it spreads to buds.

Harvest Timing, Curing Basics, and Final Week Troubleshooting

How to know when Do-Si-Dos is actually ready

Target harvest for outdoor Do-Si-Dos in most temperate climates is early October, based on the roughly 8–10 week flowering window from mid-August onset. To get the right results, you also need to time harvest based on trichome color and ripeness, not just the calendar when to harvest outdoor grow. But the real answer is in your trichomes, not the calendar. Get a jeweler's loupe (30–60x) or a digital microscope and look at the trichomes on the buds themselves, not the sugar leaves. Clear trichomes mean the plant is not ready. Milky/cloudy trichomes indicate peak THC production. Amber trichomes signal THC is degrading to CBN, which produces a heavier, more sedative effect.

For Do-Si-Dos, most growers aim for 70–90% milky trichomes with 10–30% amber for a balanced result that leans into the strain's relaxing indica character. If you want a more energetic, cleaner effect, harvest closer to 50–70% milky with minimal amber. Watch the pistils too: when 70–90% of the white hairs have turned orange or red and curled inward, that is a good secondary indicator that harvest is approaching.

Final week troubleshooting

The last two to three weeks of flowering are when problems tend to pile up. Here are the most common issues and what to do about them:

• Yellowing lower leaves: Normal in late flower as the plant mobilizes nitrogen from fan leaves into buds. If it stays on the lower half of the plant and progresses slowly, leave it alone. If yellowing is rapid and moving up the plant, it may be a deficiency worth addressing with a light dose of cal-mag or a flush.
• Bud rot appearing suddenly: Cut affected material out immediately with sterile scissors. If the infection is widespread, consider harvesting early rather than losing the whole plant.
• Buds not swelling: May be related to heavy rain or low light reducing photosynthesis in late season. Not much you can do at this stage except ensure the plant is not sitting in waterlogged soil.
• Trichomes all amber too quickly: If trichomes are turning amber faster than expected, harvest sooner rather than later. Delay causes THC degradation and a noticeably heavier, less pleasant effect.
• Purple or blue coloring on buds/leaves: This is often genetic expression triggered by cooler nights in fall. It is normal for Do-Si-Dos and is not a problem. Do not mistake it for a nutrient deficiency.

Drying and curing after harvest

After harvest, hang whole branches or individual buds in a dark room with good airflow. The target environment for drying follows the 60/60 rule: around 60°F (15°C) and 60% relative humidity. At these conditions, a proper dry takes 10–14 days. Do not rush drying with fans aimed directly at buds or high heat, both of which degrade terpenes and trichomes fast. The buds are ready to move to jars when the small stems snap rather than bend.

Once dried, move to airtight glass jars and cure at 55–62% relative humidity in a cool, dark place. Open the jars once or twice daily for the first two weeks to burp them and release moisture. After that, burp every few days. A proper cure takes a minimum of 2–4 weeks but Do-Si-Dos benefits noticeably from 6–8 weeks, when the sweet, earthy terpene profile fully develops. This strain is worth being patient with post-harvest.

Your Quick-Reference Outdoor Grow Milestones

Here is a condensed week-by-week milestone guide pulling everything together for a photoperiod Do-Si-Dos in a standard temperate Northern Hemisphere climate. Adjust the dates forward or back based on your specific last and first frost dates.

1. March (weeks 1–6 indoors): Germinate seeds, grow under lights indoors, transplant to 1-gallon containers. Use a veg nutrient formula lightly if soil is not pre-amended.
2. Late April to early May (transplant outdoors): Harden off seedlings for 7–10 days by increasing outdoor sun exposure gradually. Transplant into final container (15–30 gallon fabric pot) or in-ground bed after last frost. Confirm soil pH is 6.0–7.0.
3. May to early July (active veg): Plant is building mass. Top once or twice in May. Begin LST or SCROG setup. Ramp up nitrogen-focused nutrients gradually. Water when top 1–2 inches of soil dry out.
4. July (late veg / pre-flower): Internode spacing increases. First white pistils appear at bud sites. This is your cue to transition to bloom nutrients: reduce nitrogen, increase phosphorus and potassium.
5. August (early to mid flower): Buds form and swell. Continue bloom nutrients. Do early lollipopping and light defoliation. Stop all neem sprays. Monitor for pests and early bud rot.
6. September (mid to late flower): Buds are fattening. Increase inspection frequency for bud rot, especially after rain. Watch trichomes weekly with a loupe. Stop feeding at the 2-week-before-harvest mark and water with plain pH-adjusted water only.
7. Early October (harvest): Trichomes are 70–90% milky with 10–30% amber. Most pistils are orange and curled. Harvest in the morning for best terpene preservation. Begin drying immediately.
8. October–November (dry and cure): Dry for 10–14 days at 60°F/60% RH. Move to airtight jars at 55–62% RH. Burp daily for first two weeks. Cure for a minimum of 4 weeks, ideally 6–8 weeks for full flavor development.