Hemp plant: Characteristics, structure and uses

The Hemp Plant Through History

The hemp plant has been cultivated and used by humans for thousands of years and is known for its distinctive leaves, flowers and long stems. The plant belongs to the Cannabis genus and can be grown in different varieties depending on which characteristics are being emphasised.

Today, the term hemp is used in many different contexts. It can refer to industrial hemp, plant fibres and cannabis plants with a low THC content. It is therefore useful to understand what characterises a hemp plant and how it relates to other terms within cannabis.

What Is a Hemp Plant?

A hemp plant is a plant belonging to the Cannabis genus. The term hemp is particularly used for cannabis varieties that are grown or categorised according to specific characteristics and applications.

Hemp and cannabis are therefore not two entirely different plants. Botanically, hemp belongs to the cannabis genus, but the term is often used to distinguish certain types and uses from other forms of cannabis.

The plants can vary considerably in height, growth pattern, flower structure and chemical composition. Genetics, growing conditions and the specific variety all influence how the plant develops.

What Does a Hemp Plant Look Like?

The hemp plant is particularly recognisable by its distinctive palmate leaves. The leaves typically consist of several long, narrow leaflets with serrated edges radiating from the same point.

The plant's overall appearance varies depending on genetics and growing conditions. Some hemp plants develop long, slender stems with relatively large spaces between the leaves, while others grow in a more compact and branched form.

A hemp plant consists of several parts, including:

• roots

• a main stem and side branches

• distinctive leaves

• nodes where branches and leaves develop

• flowers on mature plants

Trichomes can also develop on the flowers. These are small glandular structures on the surface of the plant where resin, cannabinoids and terpenes are produced.

Hemp Plants and Flowers

Flowers are an important part of the hemp plant's structure, although their appearance depends on factors such as the plant's sex and genetics. Female plants can develop dense flower clusters that are commonly referred to in cannabis terminology as bud, flower or top buds. The plant's trichomes can be particularly visible on and around these flowers.

Flower structure varies from one variety to another. Some plants develop more compact flowers, while others have a looser and more open structure. Colour, resin production and the plant's aromatic profile can also vary.

The term nug is commonly used to describe a dried, individual piece of cannabis flower and is an example of how the botanical parts of the plant have developed their own terminology within cannabis culture.

Male and Female Hemp Plants

Hemp can develop as either male or female plants, and there are clear differences between their flowers. Male plants produce pollen, while female plants develop the flower clusters commonly associated with the cannabis plant's characteristic top buds. The plant's sex can therefore have a significant influence on its appearance.

The differences become particularly noticeable when the plant reaches its flowering stage. The pollen-producing structures of male plants and the flowers of female plants develop differently, even though the plants may look similar during earlier stages of growth.

There are also particular hemp varieties in which sex expression can differ, but the distinction between male and female plants remains central to understanding the biology of the cannabis plant.

What Does the Hemp Plant Contain?

The hemp plant contains far more than the cannabinoids that often receive the most attention. It has a complex composition of plant compounds, fibres, terpenes and other naturally occurring substances. Among the best-known cannabinoids are CBD, THCA and THC, although the exact composition varies considerably between varieties.

Cannabinoids are produced primarily in connection with the plant's trichomes. Many of the terpenes that contribute to the distinctive aromatic profiles of different cannabis plants are also found here.

This variation in the plant's chemical profile is one reason why modern cannabis products are often described using specific cannabinoid percentages and laboratory testing, rather than relying solely on broad terms such as hemp, sativa or indica.

Are Hemp and Cannabis the Same Thing?

Hemp and cannabis are closely related botanically because hemp belongs to the Cannabis genus. The main difference lies in how the terms are used and which plants they refer to.

Cannabis serves as the broader botanical and cultural term, while hemp is often used for specific varieties, cultivation types and applications. In legislation and trade, cannabinoid content can also play a role in how different cannabis products are categorised.

This means that a hemp plant can be a cannabis plant without all cannabis plants necessarily being referred to as hemp in everyday language.

What Is Hemp Used For?

Hemp is a versatile plant, and different parts of it can be used for different purposes. The stems contain strong fibres, while the seeds, flowers and other plant material have their own applications.

Hemp has historically been used to make textiles, rope, paper and other fibre-based materials. Seeds from certain hemp varieties are also used in a range of products.

In the modern cannabis industry, products based on the flowers and naturally occurring compounds of the plant are also available. These include CBD, different forms of flower and products made from the plant's resin. Which part of the plant is relevant therefore depends largely on the specific hemp variety and its intended purpose.

From Hemp Plant to Different Products

Once the hemp plant has been harvested, its different parts can be processed in different ways. Flowers can, for example, be dried and preserved as top buds, while resin-rich plant material can be separated and used in products such as hash and various extracts. Other hemp varieties are grown primarily for their stems, fibres or seeds.

This illustrates why “hemp” does not describe one specific end product. The plant itself is the starting point, while the final product form depends on the raw material and subsequent processing.

For cannabinoid-based products, third-party analysis and laboratory data are also relevant because the appearance of the plant alone does not reveal exactly which cannabinoids it contains.