Green Line Labs uses tissue culture to clone plant cells on specifically formulated nutrient media, yielding new plants from just a few cells.

About Us

Green Line Labs is based in Philadelphia and has decades of combined experience in plant cloning and genetics. Our tissue culture laboratories are capable of propagating as many as 6 million individual clones for farmers in the Mid-Atlantic. Plant tissue culture clones plant cells or tissue on specially formulated nutrient media.

Tissue Culture, Feminized Seedlings & Feminized Seed

The tissue culture process creates disease-free planting material and the rapid production of genetically uniform plants. From one small tissue sample, a cultivator can create hundreds of identical female clones.


Green Line Labs is a leader in high quality hemp genetics… their tissue culture clones are second to none!

Joe, Farmer

Lancaster, Pennsylvania

2020 Hemp Catalog

Download our 2020 hemp genetics catalog for available strains and pricing. Contact us today to place an order.

Improved Genetics

Traditional cloning methods are not a viable way to maintain superior genetics due to the cultivars becoming weaker over time. With plant tissue culture, the genetics get better each time the plant is duplicated.

Increased Yields

With traditional cloning, mother plants may become stressed, which can negatively impact plant quality and harvest yield. Plant tissue culture yields new plants from just a few cells.

Variety of Strains

We rapidly produce genetically identical clones from a variety of our own proprietary hemp strains. See a complete list of strains below!


How does plant tissue culture work?

Plant tissue culture is the propagation of clones from plant cells, tissues, or organs on specially formulated nutrient media. Under the right conditions, an entire plant can regenerate from a single cell. 


The tissue sample is trimmed and goes through a sterilization process. Once cleaned, the plant tissue goes in a dense nutrient culture, which is an agar gel containing a carefully crafted nutrient, hormone, and sugar mixture. Different hormone mixtures will trigger various stages of development for the tiny culture.

What are the benefits of plant tissue culture?

Tissue culture facilitates significantly more efficient and prolific plant production than traditional methods. Through this process, you will be able to create hundreds of identical, disease-free, female clones from one tissue sample. Ultimately, growers will increase their revenue because this process reduces labor and equipment costs while maintaining the highest quality cultivars. It would take approximately 30,000 square-feet to produce the same number of clones that a 2,000 to 3,000 square-foot plant tissue culture lab can. 


Additionally, tissue culture is seen as a crucial technology for the survival of developing countries. Since its birth 30 years ago, the process of plant tissue culture has enabled third-world countries to feed their population and harvest their native crops more efficiently.

How does tissue culture differ from traditional propagation methods?

Traditional propagation, also known as seeding, uses cuttings from one plant (the mother plant) to create new plants that are clones of and genetically identical to the original plant. 


Compared to seeding, cloning can cut weeks off production time and ensure an entire crop of genetically uniform plants with desirable traits. Unlike seeding, cloning can reduce production time and ensure an entire crop of genetically uniform plants with desirable traits. This uniformity is critical in the commercial markets, which both regulators and consumers demand consistent quality and safety in hemp products.

How long does tissue culture take?

A cutting from a mother plant should take roughly two weeks to reach planting stage, while tissue cultivation can take over a month to mature.


The culture can technically remain for an indefinite period, until the introduction of new hormones and nutrient-rich growing solutions, a cultivator can trigger growth, root development, and multiplication. When the plant is large enough to multiply, it is ready to be trimmed into hundreds of separate yet precisely cloned individuals.

What crops can be grown using tissue culture?

In theory, tissue culture can be extracted from any living organism. Some of the most common are: oil palm, plantain, pine, banana, date, eggplant, jojoba, pineapple, rubber tree, cassava, yam, sweet potato, and tomato.

What region of the country do you guys work with

Our network expands across the United States.

Contact Us

Contact us today to learn how we can help you increase your yields. Please contact us through the form on this page, and we will be in touch as soon as possible. You can also call us at 877-454-3671.