Photosensitive Seed Technical Cultivation Guide

In photosensitive cultivars, the flowering period is triggered by day/night length. We have two lines of photosensitive varieties: full- and short-season. 

Autoflower Seed Technical Cultivation Guide

In day-neutral, or autoflower varieties, the flowering period is triggered by the number of days of maturity. 

A special note about autoflower varieties: Promoting healthy root development is key to vigorous growth and a successful production. If the roots are stressed or shocked, plants may be stunted and switch into early flowering. Please reach out to our team if you have any questions about growing autos - we are happy to help!

Phylos F1 Hybrid seeds delivered exceptional uniformity, vigor, pathogen reduction, and cost savings. 

Production-Ready Elite Seeds are incredible varieties in either the full- or short-season photosensitive categories and also in autoflower that consistently produce: 

• Top shelf flower quality
• Higher potency
• Rich, unique aroma profiles, and 
• Stress tolerance*

Elite Seeds perform on par or better than popular clonal strains, allowing growers to trade the labor and space dedicated to cloning with seed-based production, and still produce top-selling product.

*Phylos breeds with genetic markers associated with herm resistance, resulting in Elite F1 hybrids that perform reliably across environments.

Our breeders have created F1 hybrid seeds in three different maturation categories, giving growers options for optimizing their specific environment and product sales goals. 

As F1 hybrids, Production-Ready Seeds exhibit exceptional uniformity and vigor, regardless of category.  

Astral Series: The varieties in this category produce full-season/light dep sensitive plants with high potency and unique aroma profiles.

Velocity Series: The varieties in this category are early-maturing, short-season photosensitive plants with a high flower index and a shorter plant structure, requiring less plant-touching throughout the grow cycle.  

Automatic Series: These varieties are day-neutral, early season plants for low tech/outdoor environments with the potential for multiple growing cycles each season.

Elite Seeds: These incredible plants are varieties in either the full- or short-season photosensitive categories (Astral or Velocity lines) that perform on par or better than popular clonal strains, with: 

• Top shelf flower quality
• Higher potency
• Rich, unique aroma profiles, and 
• Stress tolerance*

*All Phylos Production-Ready Seed have been tested under stressful conditions to aggressively screen for herming. Under these conditions, Elite hybrids noted as Stress Tolerant exhibit very high tolerance to herming.

Cannabis, like humans, has two copies of every gene in their DNA (typically). 

Having a "higher level of genetic variation" means the two copies are different - like when someone has a blue and a brown copy of the eye color gene, and can pass either of those to their children. In the same way, if a person has two brown eye genes, they have a "lower level of genetic variation", and will only pass on brown eye genes.  

In plant breeding, with lots of work and thousands of pollinations, selections, and back crosses, you can gradually decrease the amount of genetic variation in a variety, meaning the plants begin to have the same two copies of the genes that control size, growth habit, yield, color, aroma, cannabinoid production, herm resistance, and any other traits that have been selected for. This results in plants that are more uniform, predictable, and easier to cultivate. 

When two "inbred" plants with low genetic variation are bred together, the seeds that are produced are called "F1" or "First Generation" hybrids. 

The sibling plants that grow from F1 seed are highly predictable and uniform, because they inherit the same, predictable genes from each inbred parent. 

The actual traits of the siblings can still vary from population to population, based on the environment they are grown in.

By contrast, most cloning is in lines with higher levels of genetic variation. Because cloning preserves the genome of the mother plant, clones have the same high level of genetic variation as the mother, but will be identical to each other.  

The Phylos Plant Sex Test and Genotype Test are no longer accepted for processing as of September 30, 2021. The Phylos Galaxy, full customer account access, sex test results, and genotype reports will all remain available through our website for the foreseeable future. We recommend printing and downloading your reports and taking screenshots (Windows, Mac, and Chromebook) of your constellations if you would like to retain visual representations of your variety in the Galaxy. Learn more about the discontinuation of the Phylos Plant Sex Test and Genotype Test. If you have any questions, contact us at customersuccess@phylos.bio.

Genomics and modern breeding have produced stable lines that now allow you to grow cannabis from seed that competes with clones.

Seed-based production creates incredible advantages for producers that transition some or all of their canopy from clones, as shown in this real world analysis.  

Each F1 hybrid seed sibling has an identical genetic potential, but the yield potential is impacted by the production system and environment the variety is grown in.  

The more optimized your environment and cultivation procedures are, the closer you can get to the full genetic potential of each seed, producing a full room of outstanding, uniform, more profitable plants.

Learn more about factors that affect yield potential here.