Crystal Candy XL Auto® – Sweet Seeds | Sweet & Fruity Autoflowering Strain with High Resin Production

Crystal Candy XL Auto® by Sweet Seeds is a fourth-generation autoflowering strain that delivers a powerful punch of sweet, fruity flavor and high resin production, all in a compact 8-week cycle. This is your go-to strain for a fast, flavorful, and fuss-free harvest.

Worried your autoflower won’t pack enough flavor or potency to impress? That it’ll be too short, too weak, or just another forgettable green bud?

Most autoflowers sacrifice taste and size for speed. You end up with bland smoke, low yields, and plants that look like afterthoughts. It’s frustrating when you want something special but keep getting average results — wasting time, space, and money on genetics that don’t deliver.

Crystal Candy XL Auto® changes the game. With its intense candy-shop aroma, vigorous growth, and dense, crystal-covered buds, this strain proves autoflowers can be both fast and exceptional. It’s bred for flavor chasers and yield hunters who don’t want to wait months to enjoy their harvest.

Why This Autoflower Actually Delivers on Its Promises

Sweet Seeds didn’t just tweak an old recipe — they engineered Crystal Candy XL Auto® from selected tall specimens of Crystal Candy Auto® to maximize height, yield, and aromatic complexity. The result? A plant that towers up to 1.40 m (4.59 ft), floods your grow space with the scent of fruit gummies and bubble gum, and rewards you with up to 650 grams (22.93 oz) per square meter. This isn’t just another auto — it’s a statement.

Key Features & Real Benefits

• Intense sweet & fruity aroma – fills your room with the scent of candy stores and tropical fruit, making drying and curing a pleasure.
• High resin production – buds sparkle with trichomes, perfect for extracts or a potent, smooth smoke.
• Fast 8-week harvest – from seed to harvest in just 56 days, ideal for quick turnover or outdoor stealth grows.
• Large yields up to 650 g/m² – outperforms most autoflowers, especially in controlled indoor environments.
• Reaches 90–140 cm (2.95–4.59 ft) – tall structure allows for better light penetration and bigger colas.
• 60% Indica / 38.4% Sativa – balanced high that starts energetic and melts into deep relaxation.
• THC 14–19% – strong enough for experienced users, gentle enough for social moments.

Common Doubts — And Why They Don’t Apply Here

You might be thinking this sounds too good to be true. Let’s clear the air.

• You think that autoflowers can’t be tall or high-yielding. In reality, Creative breeding at Sweet Seeds has made it possible — this strain breaks the mold with XL size and production.
• You think that sweet flavors mean low potency. In reality, the terpene profile enhances the 14–19% THC experience, not masks it.
• You think that fast strains lack complexity. In reality, the terpene blend includes myrcene, limonene, and caryophyllene, creating a layered, evolving high.
• You think that big yields require photoperiods. In reality, indoor growers report up to 650 g/m² — rivaling many light-dependent strains.

How to Grow Crystal Candy XL Auto® for Best Results

Maximize your harvest with these expert-backed tips tailored to this strain’s genetics. Whether you're growing indoors or outdoors, these steps ensure strong roots, vigorous growth, and dense, resinous buds.

1. Start with a final pot of 18–27 L (4.76–7.14 gal) to support its tall structure and avoid root stress.
2. Use 18–20 hours of light daily — no need to change photoperiods, it flowers automatically.
3. Keep pH between 6.0–6.5 (soil) or 5.8–6.2 (coco/hydro) for optimal nutrient uptake.
4. Apply light feeding at first — this strain shows sensitivity to overfeeding, especially in early stages.
5. Use low-stress training (LST) gently to open up the canopy, but avoid topping or FIM — it’s an auto.
6. Monitor for humidity — keep RH at 40–50% during flowering to prevent mold, especially in dense buds.
7. Flush 7–10 days before harvest to improve taste and smoothness.

Technical specifications

• Breeder / Brand: Sweet Seeds
• Type: Autoflowering
• Dominance: 60% Indica / 38.4% Sativa / 1.6% Ruderalis
• Genetics: Crystal Candy Auto® × Crystal Candy Auto®
• Harvest: 8 weeks from germination
• Indoor yield: 425–650 g/m² (14.99–22.93 oz/ft²)
• Outdoor yield: 60–300 g/plant (2.12–10.58 oz/plant)
• Height (indoor): 90–140 cm (2.95–4.59 ft)
• Height (outdoor): 90–140 cm (2.95–4.59 ft)
• Difficulty: Low to medium
• Structure: Tall, branched, vigorous
• Climate: Temperate, Mediterranean
• Resistance: Moderate to fungi; avoid high humidity
• Training: Suitable for LST; avoid topping
• Recommended pot: 18–27 L final pot
• Light cycle: 18–20 h daily
• Smell in grow: High — use a carbon filter if needed
• THC: 14–19%
• CBD: 0.1%
• Aromatic profile: Myrcene, limonene, caryophyllene
• Flavour: Sweet, fruity, bubble gum, gummy candy, sour strawberry, ripe melon
• Effect: Balanced — energizing start, relaxing finish, ideal for daytime or evening

Frequently Asked Questions

Is Crystal Candy XL Auto® good for beginners?

Yes, it’s beginner-friendly thanks to its resilience and straightforward needs. Just avoid overfeeding and keep humidity in check during flowering.

Does it smell strong during flowering?

Yes, it has a high odor profile — sweet and fruity, but very noticeable. Use a carbon filter if growing indoors discreetly.

Can I grow it outdoors in a cold climate?

It prefers temperate to warm climates. While it can handle mild cold, prolonged low temperatures may slow growth. Best for spring/summer or greenhouse grows.

How many seeds should I start with?

Due to its high germination rate and stability, 1–2 seeds are enough for one plant. Many growers go straight to final pot to avoid transplant stress.

Does it need a lot of nutrients?

No, it’s moderate in demand. Overfeeding can lead to nutrient burn — start low and increase only if needed, especially during peak flowering.

Personal Experience of Pevgrow’s CEO (Alan)

I was skeptical at first — another 'candy' strain? But Crystal Candy XL Auto® won me over fast. I grew it side-by-side with a photoperiod, and it nearly matched yield while finishing weeks earlier. The smell during drying was unreal — like opening a bag of tropical gummies. I’ve seen customers use it for social moments and chill evenings, and the feedback is always the same: 'It tastes as good as it looks.' My only tip? Don’t rush the flush — let it breathe for 7 days, and you’ll taste the difference.