Udumbara (Buddhism) - Lotus Sutra

Lotus Sutra

The udumbara flower of the Ficus racemosa tree appears in chapters 2 and 27 of the 3rd century Lotus Sutra, an important Mahayana Buddhist text. The symbolic nature of the udumbara is used in the Lotus Sutra to compare the unique occurrence of its bloom with the uncommon appearance of the Buddha and its doctrine in the world:

As the Buddhas of the three periods of time
In such a manner spoke the Dharma,
So do I likewise now expound
The undiscriminated Dharma.
All Buddhas come into the world
But rarely, and are hard to meet;
And when they appear in the world,
It’s hard for them to speak the Dharma.
Throughout countless ages, too,
It’s difficult to hear this Dharma.
And those who can hear this Dharma--
Such people too, are rare,
Like the udumbara flower,
In which all take delight,
Which the gods and humans prize,
For it blooms but once in a long, long time.
So one who hears this Dharma, gives joyful praise,
With even just a single word,
Has thereby made offerings,
To all the Buddhas of the three periods of time.
Such people are extremely rare.
Rarer than the udumbara flower.
All of you should have no doubts,
For I am the Dharma King;
I declare to the assembly:
I use only the path of One Vehicle,
To teach and transform Bodhisattvas.
There are no Sound Hearer Disciples.
Shariputra, all of you,
the Sound Hearers and Bodhisattvas,
Should know that this wondrous Dharma
Is the secret essence of all Buddhas.

Thich Nhat Hanh places the flower in the context of enlightenment:

To see a fully awakened person, a Buddha, is so rare that it is like seeing an udumbara flower. In the Tu Hieu Monastery in Hue, there is a scroll which says: "The udumbara flower, although fallen from the stem, is still fragrant." Just as the fragrance of the udumbara flower cannot be destroyed, our capacity for enlightenment is always present. The Buddha taught that everyone is a Buddha, everyone is an udumbara flower.