Guava Sundae Auto

This variety explains why Fast Buds chose Mephisto Genetics’ Sundae Thumper F4 —American Cup champion— to cross with their Guava Auto RF3, World Cup winner.

Gelato over guava

The guava comes in fresh and tropical, very recognisable, and what holds it underneath is a creamy base inherited from the Gelato #45 line that the Sundae Thumper brings. The result is no ordinary sweet: tart fruit on top and ice cream below, with plenty of body.

Large, uniform and ready in eight weeks

It grows with notable hybrid vigour to form a tall plant of 70–120 cm, with a feature the bank highlights: the node spacing is balanced, so light reaches it evenly distributed and doesn’t concentrate all at the top. The flowers come out large, heavy and compact, with a clean finish.

The numbers back it up: 450–600 g/m² indoors, up to 300 grams per plant outdoors and a range of 26 to 30% THC, all in eight or nine weeks. And something that matters when you’re growing several at once: the structure stays consistent across the whole population, not just in the photo plant.

This one or the Banana Guava

They share a mother, price and yield, so the choice is down to character. This one is 50/50 and runs a week faster, with the sweetness on the creamy gelato side and more potential outdoors. The Banana Guava Auto is clearly indica, takes a week longer and brings the sweetness towards banana.

Guava Sundae Auto Technical Specifications

• Seed bank: Fast Buds
• Collaboration: Mephisto Genetics
• Genetics: Guava Auto RF3 x Sundae Thumper F4
• Seed type: Autoflowering feminised
• Hybrid type: F1
• Composition: 50% Sativa / 50% Indica
• THC: 26–30%
• CBD: Less than 1%
• Harvest time: 8–9 weeks
• Height: 70–120 cm
• Indoor yield: 450–600 g/m²
• Outdoor yield: 60–300 g per plant
• Size on Fast Buds scale: XXL
• Flavour profile: Guava, sweet fruit and gelato cream
• Growing: Indoors, outdoors, greenhouse and mixed light
• Packs available: 1, 3, 5 and 10 seeds