12/12 From Seed: Complete Guide

The 12/12 from seed method is a simplified way to grow cannabis by starting the plant under a flowering light cycle from day one.

Instead of using a vegetative phase, the plant is guided immediately into flowering, resulting in a compact structure and faster overall grow cycle.

What does 12/12 from seed mean?

12/12 refers to a light schedule of 12 hours on and 12 hours off. In traditional growing, plants are kept under longer light periods (18+ hours) to promote vegetative growth.

In this method, the plant is never given that extended light period. It transitions directly into flowering behavior shortly after sprouting.

Why growers use 12/12 from seed

How it compares to traditional growing

Traditional growing focuses on maximizing plant size before flowering. This can produce larger yields per plant, but requires more time, space, and management.

The 12/12 method prioritizes consistency over size. Instead of one large plant, the focus is on predictable results in a controlled environment.

Expected yield

Plants grown under 12/12 from seed are typically smaller, producing a single dominant cola. While yield per plant is lower, the shorter cycle allows for more frequent harvests.

Over time, this can result in consistent output rather than occasional large harvests.

Timeline (Typical)

When this method works best

Common mistakes

How this fits the ColaXpress™ system

The ColaXpress™ method is built around 12/12 from seed. By removing the vegetative phase, the system becomes easier to manage and more predictable.

Combined with a controlled grow environment, this approach reduces variability and simplifies the entire process from seed to harvest.