What is the main difference between Grapefruit and King Louis XIII?

Grapefruit is a Sativa strain (30% Indica / 70% Sativa) with THC levels of 20–25%, while King Louis XIII is a Hybrid strain (50% Indica / 50% Sativa) with THC levels of 21–25%.

Which strain has higher THC — Grapefruit or King Louis XIII?

Both have similar THC: Grapefruit at 20–25% and King Louis XIII at 21–25%.

Is Grapefruit or King Louis XIII easier to grow?

Grapefruit has easy growing difficulty with a 8-9-week flowering period, while King Louis XIII has easy difficulty with a 7-9-week flowering period. Grapefruit is a great choice for beginners.

What effects does Grapefruit have compared to King Louis XIII?

Grapefruit produces energetic, uplifting, focused, creative, euphoric effects, ideal for morning use. King Louis XIII produces sleepy, relaxing, hungry, calming effects, best for evening use.

What terpenes are in Grapefruit and King Louis XIII?

Grapefruit features Myrcene, giving it citrus, grapefruit, sweet flavors. King Louis XIII features Myrcene, with pine, wood, earth flavors.

Which medical conditions can Grapefruit and King Louis XIII help with?

Grapefruit may help with arthritis, chronic pain, depression, fatigue, headaches, migraines, nausea, ptsd, stress, anxiety. King Louis XIII may help with anxiety, chronic pain, insomnia, stress, pain. Consult a healthcare professional before using cannabis for medical purposes.

Strain Encyclopedia

Grapefruit

Sativa — THC 25%

King Louis XIII

Hybrid — THC 25%

Potency, effects, terpenes, flavors, growing difficulty, and medical uses — compared side by side.

Home/Strain Comparisons/Grapefruit vs King Louis XIII

Quick Verdict

Who wins in each category?

⚡

Potency

Tie

🏥

Medical

Grapefruit

🌱

Growing

Tie

🍋

Flavor

Grapefruit

Strain Profile Comparison

Six-axis profile overlay — see where each strain excels

Grapefruit

King Louis XIII

Effect Matchup

Side-by-side effect intensity — bars show relative prominence

Grapefruit

Effect

King Louis XIII

100%

Energetic

88%

Uplifting

77%

Focused

68%

Creative

60%

Euphoric

53%

Happy

Sleepy

100%

Relaxing

88%

Hungry

77%

Calming

68%

Grapefruit — Potency

THC0%

CBD0%

Potency LevelStrong

King Louis XIII — Potency

THC0%

CBD0%

Potency LevelStrong

Cinderella 99 x UnknownGrapefruit

Indica 30%Sativa 70%

OG Kush x LA ConfidentialKing Louis XIII

Indica 50%Sativa 50%

Side-by-Side Specs

Green highlight indicates the superior value

Grapefruit

Profile Comparison

Only Grapefruit (6)

EnergeticUpliftingFocusedCreativeEuphoricHappy

Only King Louis XIII (4)

SleepyRelaxingHungryCalming

Possible Side Effects

Shared

Dry mouthDry eyes

Only Grapefruit

Headache

Only King Louis XIII

Dizzy

Growing Guide Comparison

Grapefruit

DifficultyEasy

Flowering8-9 weeks

HarvestEnd

Indoor Yield500g/m² (1.6oz/ft²)

Outdoor Yield300g/plant (10.6oz/plant)

Indoor Height80–100cm (31–39in)

Outdoor Height200–300cm (79–118in)

Plant StructureBushy

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

ClimateWarm

King Louis XIII

DifficultyEasy

Flowering7-9 weeks

HarvestEarly October

Indoor Yield500g/m² (1.6oz/ft²)

Outdoor Yield600g/plant (21.2oz/plant)

Indoor HeightMedium

Outdoor HeightMedium

Plant StructureBushy

PhotoperiodPhotoperiod

Growing MethodIndoor, Outdoor

ClimateWarm, Humid

About These Strains

Grapefruit

Sativa 30/70 — THC 20–25%

Grapefruit is a longtime marijuana classic, a heady blend of the hybrid Cinderella 99 and a sativa bred specifically for its grapefruit flavor. With a sativa/indica ratio of 70:30, this strain packs a decidedly cerebral punch, with a major mood boost and intense euphoria.

THC levels have been charted at 20%, so this is a pretty powerful strain.

King Louis XIII

Hybrid 50/50 — THC 21–25%

King Louis is an Indica dominant hybrid cannabis, whose genetics are not known yet. It produces sticky looking dark brown and green colored buds.

King Louis is a very potent strain with a THC level of around 23.04 percent.

Which One Is Right for You?

Grapefruit and King Louis XIII are both excellent strains with distinct characteristics. Grapefruit is a Sativa with 20–25% THC, while King Louis XIII is a Hybrid with 21–25% THC. Your choice depends on your preference for effects, growing difficulty, and intended use.

Choose Grapefruit

Choose Grapefruit if you want broader medical applications. Grapefruit is a longtime marijuana classic, a heady blend of the hybrid Cinderella 99 and a sativa bred specifically for its grapefruit flavor.

Choose King Louis XIII

King Louis XIII is a solid hybrid with sleepy, relaxing, hungry effects.

Frequently Asked Questions

Common questions about Grapefruit vs King Louis XIII

Medical Disclaimer

The information on this page is for educational purposes only and is not intended as medical advice. Cannabis affects everyone differently. Consult a qualified healthcare professional before using cannabis for any medical condition. Effects, potency, and medical benefits may vary. Do not use cannabis if pregnant, nursing, or under the legal age in your jurisdiction.

More Strain Comparisons

View All Comparisons