Croptober Chronicles Day 2: Alpine Guava — When Tropical Vacation Meets THC Rocket Fuel

The Alpine Guava strain is Sin City Seeds’ Guava’z #62 x White Nightmare, a sativa-leaning hybrid with a tropical guava aroma.

I’m James Bean, founder of Seeds Here Now since 2010. This review covers Alpine Guava’s lineage, aroma, look and reported potency.

Seeds Here Now sells authentic breeder packs to adults 21+. We do not provide growing instructions, and nothing here is a medical claim.

Alpine Guava at a Glance

Lab figures vary by sample, so treat THC numbers as reported ranges, not guarantees. We describe lineage, aroma and appearance only; we make no claims about effects.

Alpine Guava Genetics and History

Alpine Guava is a Sin City Seeds cross of Guava’z #62, a selected guava-forward cut, and White Nightmare, a frosty Sin City line.

The result is a sativa-leaning hybrid with a tropical nose. Browse the Sin City Seeds catalog.

The Guava’z #62 Parent

The fruit side of the Alpine Guava strain comes from Guava’z #62. The older version of this review credits the selection to Harry Palms, who picked it for its tropical aroma. The #62 marks one chosen plant out of many from the same seeds, which is how breeders keep track of a standout.

Guava-forward lines are less common than citrus or berry lines, which is part of why a strong guava selection gets attention. SeedFinder’s Guava’z entry lists the line’s background as unknown, so we describe it by its character rather than by parents we cannot confirm.

The White Nightmare Parent

White Nightmare is the Sin City Seeds side of the cross. It is known for heavy frost, and in Alpine Guava it supplies much of the white, snow-dusted look. Published accounts of its exact parents are limited, so we leave them out rather than guess.

Sin City Seeds still offers the parent line in our shop as White Nightmare BX feminized and White Nightmare BX regular. BX means backcross, where a plant is bred back toward one of its own parents to lock in its traits.

Croptober Chronicles and the Hash Connection

The original version of this page ran as part of James Bean’s Croptober Chronicles series, a run of daily strain features. It described Alpine Guava as a line hash makers took a strong interest in, because its resin-heavy frost suits extract work while still looking like top-shelf flower.

That reputation fits the parents. White Nightmare brings the resin, and Guava’z #62 brings an aroma strong enough to carry through. Buyers who follow hash-focused lines often look for both traits together.

Alpine Guava Aroma and Appearance

The Alpine Guava strain smells of ripe tropical guava with a sweet, fresh finish.

Buds are bright and frosty thanks to White Nightmare. Alpine Guava seeds suit buyers of tropical and Sin City lines.

Alpine Guava Flavor and Aroma Notes

The older review described the Alpine Guava strain as tropical fruit punch with vanilla cream at first, full guava with pineapple when a bud is opened and a whisper of pine underneath. Leafly describes a burst of sweet guava, citrus and tropical fruit.

• Guava: the main note from Guava’z #62.
• Pineapple and tropical punch: a sweet, mixed-fruit layer.
• Vanilla cream: a soft sweetness on the first impression.
• Pine: a light, fresh edge on the finish.

The older review also named myrcene, limonene and caryophyllene. Terpene content varies from plant to plant, so treat these as common descriptions. We describe aroma only and make no claims about effects. Our guide on what terpenes are explains where these smells come from.

Frost and Bag Appeal

The older review described dense, grape-shaped buds dusted so heavily they look like fake snow, in bright green with orange pistils running through. That heavy coat of trichomes, the tiny resin glands that give cannabis its frosty look, is the White Nightmare influence, and it likely explains the Alpine half of the name. Our article on cannabis trichomes explains the frost.

Alpine Guava vs. Similar Strains

Related: Guava Gelato, Strawberry Guava and Guava Auto.

Guava lines take the fruit in different directions. Guava Gelato adds cream, Strawberry Guava adds red berry and Alpine Guava adds frost and a light pine edge, so the three make a tidy comparison set for anyone who collects tropical lines.

Buying Alpine Guava

Look for White Nightmare BX feminized and White Nightmare BX regular by Sin City Seeds for the parent line.

Alpine Guava Strain Quick Facts

• The Alpine Guava strain is a Sin City Seeds cross of Guava’z #62 x White Nightmare.
• The Alpine Guava strain is a sativa-leaning hybrid, about 70/30, with reported THC around 24% to 25%.
• The Alpine Guava strain is known for guava, pineapple, vanilla cream and light pine notes.
• Alpine Guava seeds fit tropical sets, Sin City Seeds sets and resin-focused sets.

Look for a named breeder, a printed lineage and sealed original packaging. Browse the Sin City Seeds catalog for related lines. We sell seeds only to adults 21+.

Seeds, the Law and Our Rules

Cannabis laws differ by state, and federal hemp and seed rules are changing under Section 781. Check the law where you live before you buy anything. Our cannabis seeds by state guide links every state and its official sources, and our explainer on what Section 781 is covers the federal side.

Every buyer must be 21 or older.

Growing This Beast

Indoor

• Flower: 9 to 10 weeks
• Yield: 450 to 550 g/m²
• Stretchy—plan training and support

Outdoor

• Harvest: early–mid October
• Yield: 600 to 800 g/plant (dialed-in grow)
• Prefers warm, dry (“Mediterranean”) conditions

Pro tip: Nutrient sensitive—ease into feed or enjoy crispy leaves and regrets.

Frequently Asked Questions

What is the Alpine Guava strain?

A Sin City Seeds hybrid from Guava’z #62 x White Nightmare.

Who bred Alpine Guava?

Sin City Seeds.

How strong is Alpine Guava?

Reported THC is about 24% to 25%.

Is Alpine Guava sativa or indica?

A 70/30 sativa-leaning hybrid.

Do you give growing advice for Alpine Guava?

No.

What is Guava’z #62?

A guava-forward selection that the older version of this review credits to Harry Palms. The #62 marks one chosen plant.

What does BX mean on White Nightmare seeds?

BX means backcross, where a plant is bred back toward one of its own parents to lock in traits.

What does Alpine Guava smell like?

Guava and pineapple over vanilla cream, with a light pine finish.

Is Alpine Guava difficult to grow?

While specific grow difficulty isn't detailed in available information, Alpine Guava is known to produce notable hash yields, suggesting good resin production for both indoor and outdoor cultivation.

Bottom Line

Alpine Guava earns its place with its lineage and a distinctive aroma.

Alpine Guava pairs a standout guava selection with Sin City Seeds’ frosty White Nightmare for a tropical aroma and a snow-dusted look. Record the breeder of every Alpine Guava pack you add.

Sources

• Leafly: Guava strain profile
• Leafly: Alpine Guava strain profile
• SeedFinder: Guava’z

Key Facts About Alpine Guava

Last updated October 7, 2026 by James Bean, founder of Seeds Here Now. Nothing here is legal advice. See our disclaimer, terms of use and shipping policy.