What Is Gansong? The “Hundred-Flower” Aroma in Chinese Incense

If you smell raw Gansong for the first time, you may find it difficult to connect it with the idea of a floral fragrance.

Gansong (Nardostachys jatamansi), often known in English as spikenard or jatamansi, is a traditional aromatic plant used in both Chinese medicine and Chinese blended incense.

In the Xiangcheng, an old Chinese incense text, Gansong is described with a particularly evocative phrase: “the fragrance of a hundred flowers.”

But this is not necessarily how the raw material smells when we first receive it.

What Does Raw Gansong Smell Like?

The Gansong we work with usually comes as dried roots and rhizomes.

As a natural raw material, it may still contain soil, dead roots, and some decayed matter. At this stage, the aroma can feel raw and mixed, and it can be difficult to recognize anything resembling the “hundred-flower” fragrance described in old incense texts.

This points to an important distinction in Chinese blended incense:

Aromatic materials are not always used exactly as they arrive.

Before entering an incense formula, many materials first go through paozhi, or traditional processing.

What Changes After Paozhi?

We have tried several ways of processing Gansong.

Repeated soaking, washing, and drying with plain water takes around twenty-one days. Rice-rinsing water takes around seventeen days. After repeated comparison, we found that plant ash gave us the result we preferred.

The Gansong is first washed, then placed in a ceramic jar together with sifted plant ash and water. It soaks for about one week before being thoroughly rinsed again and dried in strong sunlight for roughly ten days.

As the paozhi process is completed, the raw and mixed odors gradually fade.

Then something quite distinctive begins to emerge.

It is difficult to identify it as one particular flower. It does not smell specifically like rose or osmanthus. Instead, it feels more like many small floral notes appearing together.

For us, this is the most direct way to understand what old incense texts meant by “the fragrance of a hundred flowers.”

Why Does This Matter in Chinese Blended Incense?

If we look only at an ingredient list, Gansong is simply one material among many.

But Chinese blended incense is not just a matter of grinding several aromatic materials into powder and mixing them in fixed proportions.

The same raw material can behave differently depending on how it has been prepared before blending.

So when trying to understand a Chinese incense formula, there are really two important questions:

What materials are in it?

And:

How were those materials prepared before they entered the formula?

This is one reason paozhi matters so much in traditional Chinese incense making.

How Gansong Works Inside an Incense Formula

Gansong does not necessarily make a finished incense smell obviously floral.

In a blended formula, it works together with woods, herbs, resins, and other aromatic materials. Its role is often not to create a single recognizable “Gansong note,” but to become part of a larger scent structure.

We also use Gansong in Autumn Hills · Plum.

The incense opens with woody, herbal, and earthy notes, followed later by a subtle sweet-and-tart character. Gansong sits within that structure, working together with the other materials to create the impression of a late-autumn mountain landscape.

This is one of the things we find most interesting about Chinese blended incense:

Each material has its own character, but once it enters a formula, it becomes part of something larger.