London Pound Cake F1 Auto

London Pound Cake F1 Auto takes Barney’s Farm Seeds’ dessert-style London Pound Cake and crosses it with BF Super Auto #1 for speed, ease and autoflowering convenience. It’s available as feminised autoflowering seeds, with a 70% sativa and 30% indica profile and THC levels reaching up to 28%.

The parentage is simple and important: London Pound Cake x BF Super Auto #1. London Pound Cake is the flavour anchor here, known in this line for its sweet, bakery-like character, while BF Super Auto #1 adds the automatic flowering trait and helps keep the cycle quick and practical. Barney’s Farm describe the aim as keeping the rich London Pound Cake character while making the plant accessible to a wide range of growers.

Aroma is one of the main reasons to look at this one. In flower, London Pound Cake F1 Auto gives off ripe berries, fruit and sweet creamy vanilla, with the smell gradually filling the room and lingering. The flavour follows the same dessert route: creamy vanilla comes first, then sweet berries, with nutty notes behind it to stop the sweetness feeling flat. The finish is smooth and gently sweet.

The effect is described as relaxed, euphoric, happy and energising. It starts with an uplifting mood shift, then adds a more motivating edge rather than dropping straight into heaviness. Physical relaxation comes later, usually building towards its peak after around 45 to 60 minutes. The overall effect is reported to last about 2 to 3 hours, giving it enough balance for daytime use while still having enough body for the evening.

Fast cycle, chunky colas and strong yields

Indoors, plants stay manageable at around 90–130 cm and are reported to produce 550–650 g/m². Outdoors, they can reach 110–160 cm, with yields of 280–350 g per plant. The full cycle is listed at 75–80 days, with no light-cycle change needed to trigger flowering.

The plant develops a balanced, well-proportioned structure with dense, chunky colas, vibrant colouring and heavy trichome coverage. Light low-stress training can help open the canopy and improve light penetration, especially earlier on, and even light across the canopy is recommended as flowering develops. Barney’s Farm also notes good resilience in moderate humidity and fluctuating temperatures, with suitability for a range of outdoor climates.

London Pound Cake F1 Auto should suit growers who want a fast autoflower with proper dessert flavour, strong resin appeal and a sativa-dominant lift rather than a purely sleepy finish. The numbers are big for an auto, but the character is just as important: creamy vanilla, sweet berries, nutty depth and a 28% THC ceiling in a compact, quick-running plant.