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FeminizedAutoflowerHarvest in as little as 80 days

Red Runtz Autoflower Seeds

Red Runtz Autoflower is a modern candy strain from Red Pop and Runtz: sugary red-fruit sweetness with a splash of gas. Plants grow sturdy and bushy, with leaves that can turn purple and crimson and buds caked in sticky resin. It flowers on its own, with no light change. $9.99 a seed, 6 for $50 or 12 for $80.

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Indoor 2 Gallon Grow Kit · $79.99

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Strain profile

Red Runtz Autoflower Seeds: Aroma, Type and Growing Zones

Sugary candy and red fruit snacks with a splash of chemical gas, a flavor that lives up to the smell. A sturdy, bushy autoflower whose leaves can turn purple and crimson as it ripens.

🌱 Type

Feminized autoflower

🧬 Lean

Balanced hybrid (some plants lean slightly indica)

📦 Seed packs

1 seed $9.99 · 6 seeds $50 · 12 seeds $80 (kits ship without seeds)

🪴 Best kit

Indoor 2 Gallon or Bonsai 1/2 Gallon; Medium 5 Gallon on a patio

The sniff test

Aroma, Flavor and Terpenes

Loudest terpenes🍋 Limonene🥭 Myrcene🌶️ Β-caryophyllene A handful of red fruit snacks, straight from the freezer. Sugary candy and chewy red fruit up front, icy frozen berries in the middle, and a splash of gas to finish. Sweet, cold and a little chemical.

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Genetics

Indica or Sativa

Red Runtz Autoflower is a balanced hybrid, and some plants lean slightly indica. We could only confirm its parents from one trusted source, so we leave the family tree out here. The plant grows sturdy, bushy and stocky, and spreads out sideways. Leaves can turn purple and crimson, and buds get caked in sticky resin. For a home grower, that means a short, wide plant that suits a small space. As a feminized autoflower, it flowers on its own with no light change. Indoors, keep the lights on 18 hours a day (or 20) from seedling to harvest.

Illustration: grow difficulty meter showing Easy, a great first grow

Difficulty

How Hard Is It to Grow?

Easy. Autoflowers flower on their own as they age, so there is no light schedule to manage. Sun, water and Superb Soil do most of the work. Indoors, keep lights on 18/6 or 20/4 the whole grow.

Cannabis growing zones for strains

Where it grows

Growing Zones and Harvest

Seed to harvest: As little as 80 days in our Indoor 2 Gallon kit. Find your growing zone on the USDA Plant Hardiness Zone Map. Home-grow rules differ by state; check yours.

Find your state’s grow guide →

From Seed to Harvest

Illustration: a seed sprouting in a soaked Jiffy peat pellet in the sun

1. Germinate

Soak a Jiffy pellet, plant your seed about 1 cm deep, and keep it warm and damp until it sprouts.

Illustration: a seedling in its Jiffy pellet planted into a pot of soil

2. Plant in your kit

Move the seedling, pellet and all, into your kit pot filled with Superb Soil.

Illustration: a cannabis plant growing in a fabric pot in full sun

3. Grow in the sun

Autoflowers start flowering on their own after a few weeks, with no light schedule. Give it all the sun you can.

Illustration: a flowering cannabis plant with buds ready to harvest, next to trimming scissors

4. Harvest

Harvest in as little as 80 days from seed.

Red Runtz Strain: Type, Aroma and Flavor

Red Runtz cannabis plant in flower, close up
Red Runtz in flower

Red Runtz is a modern strain made by crossing Red Pop with the iconic Runtz, and ours is a feminized autoflower version. It’s a balanced 50/50 hybrid, though many plants lean slightly indica (about 60/40). Its terpene profile reads like a high-end dessert menu with a splash of chemical funk: a complex, sugary candy-and-red-fruit-snack smell, like a soda fountain inside a gas station, with frozen berry and gas as it ripens. It’s known for a flavor that matches the smell, sweet with a caramel-like note. The loudest terpenes are limonene, myrcene and beta-caryophyllene. It comes from a rare, sought-after lineage, and its crimson-tinted, resin-drenched buds have heavy bag appeal; trimming them is sticky work.

How to Grow Red Runtz Autoflower Seeds in a Pot for Pot Kit

Plant one seed in our organic super soil and just add water. It’s an absolute beauty to grow, and an autoflower, so it flowers on its own: no light schedule to manage and no light-leak worries, which makes it a forgiving way to learn home growing. Indoors, keep lights on 18 hours on and 6 off (or 20/4) from seedling to harvest, and keep temperatures steady so the plant puts its energy into resin. Good lighting (best grow lights) brings the purple and red colors to the surface. It grows a sturdy, bushy shape that spreads sideways, so gently tie back the side branches (LST) and get light to the lower buds for an even harvest. It does well in a closet tent or other small indoor space, which suits apartment growers. Growing in one of our kits? Free email grow coaching at help@apotforpot.com helps you from seed to harvest.

Red Runtz Flowering Time and Plant Size

Autoflowers run on their own clock, so you can plan the whole grow from the day you plant. In our Indoor 2 Gallon kit, plan on as little as 80 days from seed to harvest. Red Runtz stays stocky and low to the ground, spreading out rather than up, and it shows a wide range of leaf colors as it matures.

Growing Red Runtz Indoors vs Outdoors

Outdoors: it’s a hardy, vigorous grower that loves sun, handles temperature swings and grows well in any US gardening zone. It does best in warm, dry weather, and its ruderalis side lets it finish in shorter, cooler northern summers. Plant once the threat of frost has passed; for the stickiest buds, time it so peak bloom lands in the summer heat, and aim to finish during the driest part of your season. It finishes before autumn rains and late-summer bugs, and you can fit two harvests into one sunny season. It’s resistant to common pests, and its stocky shape suits a balcony or backyard patch. It’s in our Cold, Warm and Hot zone collections; find your zone on the USDA Plant Hardiness Zone Map.

Indoors: the smell gets loud and syrupy-sweet late in flower, so run a good carbon filter and keep humidity low to protect the dense, sugary colas from rot.

Grow guides: How to grow weed · Growing from seed · Autoflowering weed guide · How to prune and train · Growing outdoors by state · Runtz strain review

Red Runtz Seeds FAQ

Is Red Runtz indica or sativa?

It’s a balanced 50/50 hybrid, though many plants lean slightly indica (about 60/40).

What is the Red Runtz strain?

Red Runtz is a modern candy strain from Red Pop and Runtz. Ours is a feminized autoflower. For the whole Runtz family, read our Runtz strain review.

What does Red Runtz smell like?

Sugary candy and red fruit snacks with a splash of chemical gas, and frozen berry as it ripens. The main terpenes are limonene, myrcene and beta-caryophyllene.

Are these Red Runtz seeds feminized?

Yes. They’re feminized autoflower seeds, so every plant should be female and flower on its own.

How much are Red Runtz seeds?

Feminized Red Runtz autoflower seeds are $9.99 for 1, $50 for 6 or $80 for 12. Our grow kits ship without seeds, so add seeds to your kit order.

Can I grow Red Runtz where I live?

Home-grow laws differ by state and change often. Check your state’s official rules, and you must be 21+. This isn’t legal advice.

Grow guides: Growing autoflowers · How to grow weed · Growing from seed · Growing outdoors by state

Best Grow Kit for Autoflower Seeds

Kits come with organic super soil, a fabric pot and grow videos. Seeds are sold separately.

how to grow cannabis like a house plant

Indoor 2 Gallon KitBest match: a windowsill or small tent

$79.99 – $309.94Price range: $79.99 through $309.94

Shop 2 Gallon
Beauty of a mini pot plant

Bonsai 1/2 Gallon KitSmallest setup: a compact grow

$54.99 – $288.69Price range: $54.99 through $288.69

Shop Bonsai
Complete contents of the a Pot for Pot 5 Gallon Cannabis Grow Kit laid out, featuring living Superb Soil, fabric pot, trimming scissors, pest protection, and smartphone macro lens.

Medium 5 Gallon KitOn a patio or balcony

$99.95 – $374.92Price range: $99.95 through $374.92

Shop 5 Gallon

Why autoflowers? They flower on their own, with no light schedule to change, and can go from seed to harvest in as little as 80 days.

Want a bigger plant? Try a full-season photoperiod in the Outdoor 35 Gallon kit.

More Feminized Autoflower Seeds

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This product has multiple variants. The options may be chosen on the product page
Price range: $9.99 through $80.00
This product has multiple variants. The options may be chosen on the product page
Price range: $9.99 through $80.00
This product has multiple variants. The options may be chosen on the product page

See all feminized autoflower seeds →

For adults 21+ where home growing is legal. Home-grow rules differ by state and change often; check your state's official rules. Not legal advice.

Runt Runtz Strain Seed Card
Red Runtz Autoflower Seeds
Price range: $9.99 through $80.00
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