How to Grow Royal Flush
Royal Flush
Cannabis sativa L.
herbRoyal Flush is a hybrid cannabis cultivar known for its balanced effects and moderate THC content. It produces dense, resinous flowers with a complex terpene profile featuring citrus and floral notes. This strain is popular among cultivators for its relatively straightforward growing requirements and consistent yields.
When should you plant Royal Flush in your zone?
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Example Royal Flush timeline · Pittsburgh, PA (Zone 6b)
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Plant Royal Flush
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Royal Flush
Around Jun 12≈ 56 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Royal Flush dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best grown indoors with controlled environment or outdoors in warm climates (zones 9a and above)
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Get my Royal Flush timeline →Growth Stages
Seedling
7-14 daysTiny sprouted seeds with cotyledons (seed leaves) and first true leaves emerging
Maintain high humidity (70-80%), gentle air circulation, consistent moisture, and 18-24 hours of light. Keep soil warm (70-75°F). Avoid overwatering
Vegetative
3-4 weeksPlant develops multiple leaf sets with characteristic palmate leaves. Stems thicken and branch structure forms
Maintain 18-hour photoperiod, nitrogen-rich feeding, regular pruning or training for shape, increase air circulation. Keep temperature 70-80°F
Pre-flowering
1-2 weeksPlant begins showing sex characteristics; pistils or pollen sacs become visible at leaf axils
Remove male plants if growing from regular seeds. Begin transitioning nutrients from high nitrogen to balanced or phosphorus-rich. Maintain 18-hour light cycle
Flowering
7-8 weeksDense flower clusters (buds) develop with visible trichomes and pistils. Plant stops vertical growth. Aroma intensifies
Switch to 12-hour photoperiod, reduce nitrogen and increase phosphorus/potassium. Maintain 60-70°F temperature. Increase air circulation to prevent mold. Flush with plain water in final 1-2 weeks
Harvest
Harvest readiness at 56-63 days floweringFlowers reach peak maturity with amber-tinted trichomes and retracted pistils. Plant ready for drying
Monitor trichome color with magnifier (aim for 60-70% cloudy, 20-30% amber for balanced effects). Cut at peak potency. Hang dry in dark, cool environment (60-65°F, 45-55% humidity) for 7-10 days before curing
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity, spray with neem oil or insecticidal soap, introduce predatory mites (Phytoseiulus), ensure good air circulation
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Improve air circulation, reduce humidity, apply sulfur dust or potassium bicarbonate, remove affected foliage
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Spray with neem oil or insecticidal soap, introduce ladybugs, use yellow sticky traps
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Reduce humidity to 40-50% during flowering, improve air circulation, remove affected buds, maintain good sanitation
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Yellow sticky traps, neem oil spray, improve ventilation, spray undersides of leaves
Uses
Therapeutic cannabinoid and terpene profile
MedicinalRoyal Flush offers a balanced THC/CBD ratio suitable for various therapeutic applications. The balanced effect profile makes it popular for those seeking relief without extreme psychoactivity. [source]
Culinary preparation and infusions
CulinaryDried flowers can be used for tea infusions, cooking oils, or butter (cannabutter) for edible preparation. Proper decarboxylation is necessary to activate cannabinoids for consumption. [source]
Terpene aromatic profile
HouseholdThe complex terpene profile featuring citrus and floral notes makes Royal Flush appreciated for its distinctive aroma. Dried flowers can be used in aromatherapy or as decorative dried botanicals. [source]
Resin collection and concentrate production
CraftDense resinous flowers are suitable for hash production, solventless extraction methods (dry sift, bubble hash), or solvent-based concentrates. High trichome density makes it efficient for concentrate production. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when 60-70% of trichomes are cloudy/milky and 20-30% are amber for balanced effects. Cut main stem and remove large fan leaves. Hang entire plant or cut branches for drying. Dry in complete darkness at 60-65°F and 45-55% humidity for 7-10 days. Cure in airtight containers for 2-4 weeks, burping daily to release moisture and allow proper cannabinoid development. Avoid light and heat exposure during drying and curing
Fun Facts
- 🌱 Royal Flush is named for its abundant resinous flower production and 'royal' potency, with the name referencing its genetic quality and yield potential
- 🌱 The strain's balanced hybrid genetics typically result in a flowering time of 8-9 weeks, making it moderately fast-finishing compared to pure sativas
- 🌱 Royal Flush plants often exhibit a distinctive branching pattern that responds well to low-stress training (LST) and topping techniques, making it popular for Screen of Green (ScrOG) and other training methods
Gardening Terms
New to gardening? Learn about terms used in this guide:
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