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Grapefruit Autoflower Seeds seed pack
AutoflowerBeginnerTHC 19%Sativa Dominant

Grapefruit Autoflower Seeds

Bright citrus flavor, done in 70 days

$41.65 – $135.157 pack sizes — choose at ILGM

Buy at ILGM

Guaranteed germination · Free US shipping over $50 · Discreet packaging

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Our take

Grapefruit Autoflower is a sativa-dominant strain bred from Grapefruit and ruderalis, bringing a sharp citrus aroma and 19% THC to a genuinely beginner-friendly grow. It completes its full cycle in just 70 days, fits both indoor setups and outdoor gardens, and rewards new growers with yields up to 540 g/m² without demanding much in return.

Full seed-to-harvest cycle completes in 70 days — no light schedule changes needed
Yields up to 540 g/m² indoors, strong output for an autoflowering variety
Naturally resistant to common diseases, a practical advantage for first-time growers

Grow specs

GenotypeSativa Dominant
THC19%
CBD levelLow
EffectsEnergetic, Talkative, Uplifted
Taste & aromaCitrus, Grapefruit, Sweet
Dominant terpenesCaryophyllene, Myrcene, Pinene
Grow difficultyBeginner
ClimateOutdoor, Indoor, Sunny, Continental, Mediterranean
Total cycle (auto)70 days
Yield potential540 gr/m²
Plant heightMedium
Bud structureAverage Density, Medium Density, Medium Size, Elongated
ResilienceDiseases
Optimal temp72-80°F
Optimal humidity40-60%
LineageGrapefruit x ruderalis
Genetics byFemale Seeds

Specs are ILGM's published figures for this product; catalog and pricing last verified August 2026. Our write-up is our own — see how we make money.

Growing notes

Rated beginner-friendly, this strain is forgiving and adaptable — it performs well indoors under consistent light or outdoors in sunny, continental, and Mediterranean climates. The full cycle wraps up in 70 days from seed. Plants reach a medium height with elongated, medium-density buds. Its built-in disease resistance gives newer growers a useful buffer against common environmental issues.

New to growing? Start with the complete guide, plan your gear with tent setups, and diagnose problems with troubleshoot.

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