Hybrid70% Sativa / 30% Indica23-29% THC

Lemon Royale

Breeder: Swamp Boys Seeds

Lemon Royale is a sativa-dominant hybrid from Swamp Boys Seeds that combines Lemon Tree's explosive citrus aromatics with GMO's resin production and Triangle Kush's physical potency. The strain is celebrated for exceptional trichome coverage rivaling The White, a room-clearing lemon rind nose, and a fast flowering time of 7-9 weeks. It has become a flagship cultivar for District Cannabis in Washington, D.C. and is highly valued in solventless extraction circles for its hash-washing potential. Swamp Boys Seeds — founded in 2006 by Florida breeders Cornbread Ricky and Krome — built Lemon Royale by crossing their Lemon Tree with a GMO/Triangle Kush Skunk hybrid, folding their legendary TK lineage into a citrus-dominant frame. The result pairs Lemon Tree's piercing lemon-rind terpene expression with the resin density and structural heft of the GMO side. Multiple elite cuts circulate commercially, including District Cannabis's medical-market version and the Teaming With Terps "Gridley Street" selection, each emphasizing different facets of the parent genetics. THC routinely tests between 23% and 29%, with limonene leading the terpene profile followed by beta-caryophyllene, myrcene, and trace linalool, terpinolene, humulene, and pinene. The 70/30 sativa-to-indica ratio translates to energizing, euphoric effects with cerebral stimulation and sustained focus — a daytime cultivar that medical patients reach for to address depression, fatigue, and chronic stress.

Lineage

Lemon Tree x (GMO / TK Skunk)

THC Range

23-29%

Flower Time

8-10 weeks (56-70 days)

Difficulty

Easy to moderate

Lineage & Genetics

Cross: Lemon Tree x (GMO / TK Skunk)

Lemon Tree (mother) is a balanced hybrid of Lemon Skunk and Sour Diesel, developed by legacy growers in the Santa Cruz Mountains of California. It contributes the intense citrus terpene profile, structural integrity, and the fuel undertones from its Sour Diesel parentage. The paternal side is GMO / TK Skunk — a cross of GMO Cookies (Chemdawg D x Girl Scout Cookies Forum Cut, bred by Mamiko Seeds and selected by Skunkmasterflex) with Triangle Kush x Skunk #1. GMO contributes savory garlic-mushroom-onion depth, extraction-grade resin production, and potency. Triangle Kush, one of Swamp Boys Seeds' foundational genetics from the Florida underground scene, adds heavy physical effects, fuel and pine notes, and OG Kush structural traits. Skunk #1 provides hybrid vigor and growth stability from its Colombian Gold, Acapulco Gold, and Afghan lineage.

Lineage Dispute

Some sources simplify the paternal side as 'GMO x Triangle Kush,' omitting the Skunk #1 component. Swamp Boys Seeds and SeedFinder confirm the full formula is Lemon Tree x (GMO / Triangle Kush x Skunk #1).

Terpene Profile

DOMINANT

Limonene — 0.5-1.2% by weight; responsible for the signature sharp citrus aroma, mood elevation, and stress relief properties

SECONDARY

Caryophyllene — 0.3-1.0% by weight; contributes peppery, spicy, and gassy undertones with potential anti-inflammatory effects via CB2 receptor affinity

SECONDARY

Myrcene — 0.2-0.8% by weight; adds roundness, earthy sweetness, and a gentle sedative body quality that softens the overall effect profile

Aroma: The first impression is an intense, sharp lemon rind that permeates through rooms, ducting, and elevator shafts — a nose so loud it demands carbon filtration for indoor grows. Beneath the dominant citrus blast sits a gassy diesel undertone inherited from Sour Diesel and Chemdawg D lineage. A sour, lemony overtone is accented by spicy diesel and a punch of savory skunk. Swamp Boys Seeds describes a 'spicy dead meat undertone' from the GMO parentage, adding unusual savory depth beneath the lemon dominance.

Flavor: On the inhale, Lemon Royale delivers a super sweet and creamy citrusy lemon flavor with light touches of skunky earthiness. The smoke is smooth and full-bodied, with bold lemon notes bursting through rich gassy undertones. On the exhale, subtle gas, pine, grass, and herbal notes emerge. Depending on phenotype expression of limonene-to-caryophyllene ratios, the flavor can read as lemonade, lemon cleaner, lemon candy, or lemon-diesel, with higher caryophyllene shifting toward a drier, gassier finish.

Effects & Experience

Onset: Almost immediate upon exhale — a rushing cerebral euphoria hits within seconds, with full effects settling in at 5-10 minutes.

The high begins with a high-flying euphoric rush into the brain, filling users with happy energy, motivation, and creative stimulation. A clear-headed buzz promotes productivity, focus, and social engagement without any couchlock. Users report being intensely talkative and mentally sharp. Over time, a gentle body relaxation builds beneath the cerebral effects, providing physical comfort without sedation. The experience eventually tapers into a more relaxed state with a smooth landing.

Duration: Approximately 2-3 hours, with the peak cerebral phase lasting about 90 minutes before tapering into relaxation.

Commonly Reported Uses

DepressionChronic fatigueADD/ADHDChronic stressHeadaches and migrainesAnxietyPTSDChronic painInflammationAppetite lossMuscle spasms

Grower's Notes

Flower

8-10 weeks (56-70 days)

Indoor Yield

Moderate to high

Outdoor Yield

Moderate to high; harvest late September to

Difficulty

Easy to moderate

Height / Stretch

Medium to tall; 1.5-2.2x stretch in flower

Environment

Indoor / Outdoor / Greenhouse

Lemon Royale announces its Swamp Boys pedigree early. Seedlings establish quickly, pushing vigorous lateral branching inherited from the Lemon Tree mother — a trait that makes this cultivar a natural fit for SCROG and SOG setups. Internodal spacing is moderate, tight enough for dense cola stacking without becoming impenetrable. Top once or twice at the fifth or sixth node during a four-to-six-week veg and the canopy fans out willingly into multiple uniform flower sites.

At the flip, expect a 1.5x to 2.2x stretch. Set trellis nets with headroom and lollipop the lower third at the flip and again around day 21 to concentrate energy into tops and improve interior airflow.

Bloom runs 56 to 70 days depending on phenotype, though 63 to 65 days is the sweet spot for most cultivators. Swamp Boys describe the variety as a "fast finisher," and the Teaming With Terps Gridley Street cut reliably wraps at roughly nine weeks. Plants pushed past day 65 under intense light may foxtail slightly, which can actually improve calyx-to-leaf ratio and simplify trimming.

Bud structure owes more to GMO than Lemon Tree

dense, round, bulbous formations stacking tight along branches. Large calyxes swell visibly during weeks five through seven, and trichome coverage is extraordinary — Swamp Boys note the frost "challenges The White," their trichome benchmark. Capitate-stalked heads are large and brittle in top phenotypes, a trait hash makers prize. Color ranges from lime to forest green with orange-amber pistils; late-flower night temperatures below 18–20°C pull lavender and violet hues on many phenos.

Both soilless and living soil perform well, though terpene expression peaks in organic living soil programs. In soil, pH 6.2–6.8; in coco, pH 5.8–6.2 with robust Ca/Mg supplementation — lemon-fuel hybrids show Ca/Mg hunger under intense LED. EC targets: 1.2–1.5 mS/cm in veg, 1.8–2.2 at peak flower, tapering to 1.2–1.4 pre-harvest. Back off nitrogen by week four of flower to avoid grassy cure notes; P and K carry weeks three through eight.

Light sweet spots run 800–1,150 µmol/m²/s PPFD, with the upper end for enriched CO2 rooms. Environmental targets: veg 24–27°C day / 19–22°C night, 60–70% RH; early flower 24–26°C, 55–60% RH; mid-to-late flower 23–25°C day / 18–20°C night, 40–50% RH, VPD 1.3–1.6 kPa. Outdoors, it thrives in Mediterranean climates with full sun and well-draining soil, finishing late September to mid-October.

Dense bud structure and heavy resin create microclimates that harbor botrytis if humidity exceeds 60% in late flower — defoliation and airflow are non-negotiable. Outdoors, a wind path deters powdery mildew; preventive potassium bicarbonate or Bacillus biocontrols are smart insurance during shoulder-season dew events.

Wash data is promising. High-resin phenotypes separate cleanly in ice water, and cultivators consistently report Lemon Royale "washes well." Fresh-frozen material yields 4–7% on a wet-weight basis, with 73–120 micron bags pulling the best full-melt heads. Pressed into rosin at 160–180°F, the concentrate carries a creamy candy-lemon profile with strong terpene retention.

Drying and curing demand patience. Hang whole branches at 15–18°C and 55–60% RH for 10 to 14 days until stems snap cleanly, then jar at 62% humidity for two to four weeks minimum. Limonene degrades rapidly under fast-dry conditions; a slow cure rewards with a dramatically more complex lemon-fuel-garlic finish that evolves over weeks of jar time.

History & Origin

Lemon Royale emerged from Swamp Boys Seeds, a legendary breeding company established in 2005 when Florida natives Cornbread Ricky and Krome partnered based on their shared knowledge of Triangle Kush and The White — two elite clone-only cultivars from the Florida underground scene. These foundational genetics became the backbone of a program that has since developed over 50 successful strains with international recognition. Lemon Royale represents a deliberate convergence of three of the most influential genetic lines in modern cannabis: Lemon Tree's bright citrus character from the California Santa Cruz scene, GMO's savory depth from Mamiko Seeds via Skunkmasterflex, and Triangle Kush's heavy OG foundation from the Florida underground. The strain was offered only in regular (non-feminized) seed form through Swamp Boys' catalog. Lemon Royale gained particular prominence through District Cannabis in Washington, D.C., a family-owned vertically integrated company founded by Andras Kirschner (Sustainable Agriculture background) and Edward Weidenfeld (a cannabis advocate who discovered the plant after being diagnosed with Parkinson's disease), where it became a flagship medical market cultivar. Sinse Cannabis in Missouri also features Lemon Royale as a signature sativa in their genetics lineup. The strain has been well-received across major platforms including Leafly (4.4/5 rating from 84 reviews), AllBud, Gentleman Toker, Cannabis Sensei, and DC Finest. Swamp Boys noted their Lemon Royale has 'a frost that challenges The White' — positioning it as a trichome-production powerhouse valuable for both flower consumption and solventless extraction.

Awards & Recognition

●3rd Place, Sativa Flower — High Times Cannabis Cup Oregon: People's Choice Edition 2023 (Eastwood Gardens)
●Bronze Medal — California Cannabis Awards 2025 (Howie Roll x Soma Rosa Farm)

Notable Crosses

Strains bred using Lemon Royale as a parent:

91 Royale— White 91 x Lemon Royale (Swamp Boys Seeds)

Shrimp Scampi— Chem91 x Lemon Royale (TeamingWithTerps)

Royal Jewels— Lemon Royale x 706 Skunk (Terp Fi3nd)

Ultimate Warrior— Lemon Royale x Royal Goo (Terp Fi3nd)

Sour Diesel Royale— Lemon Royale x Sour Diesel IBL (Reservoir Seeds)

Mint Lemon Donuts— (Unknown x Lemon Royale) x Ice Cream Mints (Blasted Genetics)

Relax In Paradise— (Tahiti Lime x Lemon Royale) x (Triangle Kush x Lemon Royale) (Empathic Genetics)

Shirley Ave Gas— (Topanga Pure Kush x Sherbanger) x (Triangle Kush x Lemon Royale) (Empathic Genetics)

Frequently Asked Questions

7 common questions about Lemon Royale

What is Lemon Royale and what are its genetics?

Lemon Royale is a hybrid cannabis strain (70% Sativa / 30% Indica) bred by Swamp Boys Seeds. It is a cross of Lemon Tree x (GMO / TK Skunk), testing at 23-29% THC. Lemon Royale is a sativa-dominant hybrid from Swamp Boys Seeds that combines Lemon Tree's explosive citrus aromatics with GMO's resin production and Triangle Kush's physical potency. The strain is celebrated for exceptional trichome coverage rivaling The White, a room-clearing lemon rind nose, and a fast flowering time of 7-9 weeks.

What does Lemon Royale smell and taste like?

Lemon Royale's dominant terpenes are Limonene. The aroma is described as the first impression is an intense, sharp lemon rind that permeates through rooms, ducting, and elevator shafts — a nose so loud it demands carbon filtration for indoor grows. beneath the dominant citrus blast sits a gassy diesel undertone inherited from sour diesel and chemdawg d lineage. a sour, lemony overtone is accented by spicy diesel and a punch of savory skunk. swamp boys seeds describes a 'spicy dead meat undertone' from the gmo parentage, adding unusual savory depth beneath the lemon dominance.. The flavor profile features on the inhale, lemon royale delivers a super sweet and creamy citrusy lemon flavor with light touches of skunky earthiness. the smoke is smooth and full-bodied, with bold lemon notes bursting through rich gassy undertones. on the exhale, subtle gas, pine, grass, and herbal notes emerge. depending on phenotype expression of limonene-to-caryophyllene ratios, the flavor can read as lemonade, lemon cleaner, lemon candy, or lemon-diesel, with higher caryophyllene shifting toward a drier, gassier finish..

What are the effects of Lemon Royale?

Almost immediate upon exhale — a rushing cerebral euphoria hits within seconds, with full effects settling in at 5-10 minutes. The high begins with a high-flying euphoric rush into the brain, filling users with happy energy, motivation, and creative stimulation. A clear-headed buzz promotes productivity, focus, and social engagement without any couchlock. Duration is typically approximately 2-3 hours, with the peak cerebral phase lasting about 90 minutes before tapering into relaxation.. Commonly reported uses include Depression, Chronic fatigue, ADD/ADHD, Chronic stress.

How hard is Lemon Royale to grow?

Lemon Royale is rated easy to moderate difficulty. It flowers in 8-10 weeks (56-70 days), reaches medium to tall; 1.5-2.2x stretch in flower in height, and yields moderate to high indoors. Best suited for indoor / outdoor / greenhouse environments.

Does Lemon Royale turn purple?

Yes. Lemon Royale is known to express purple coloration, with reported colors including green, purple. Cooler nighttime temperatures during late flowering typically intensify anthocyanin expression.

What strains were bred from Lemon Royale?

Lemon Royale has been used as a parent in several notable crosses, including 91 Royale, Shrimp Scampi, Royal Jewels, Ultimate Warrior, Sour Diesel Royale. Its genetics contribute to a wide range of modern cultivars.

Has Lemon Royale won any cannabis awards?

Yes. Lemon Royale has received recognition including 3rd Place, Sativa Flower — High Times Cannabis Cup Oregon: People's Choice Edition 2023 (Eastwood Gardens); Bronze Medal — California Cannabis Awards 2025 (Howie Roll x Soma Rosa Farm).

Sources & References (44)

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