Is saffron flower the same as saffron?

It’s all about what’s in the plant:

The red and yellow flowers of the saffron plant (Agave saffacosus) are usually white, black, or yellow. The yellow flowers of the agave (Agave americana) plant (A. americana) are sometimes pale green (A. chenopodiata). The green and red leaves of the agave (Agave americana) plant are usually black, but some red stalks are also spotted white. The plant’s leaves turn yellow in the summer, becoming an interesting orange and sometimes yellow, and the pink flowers of the agave (A. chenopodiata) plant are also bright pink. The yellow and dark green leaves of a plant grown for its seed are usually also orange, black, or yellow. The yellowish yellow fruits, which are eaten raw or in salads, are also orange and sometimes black. In one family of plant (Anacardiaceae) each species bears a yellow flower and a red fruit, but in others (e.g., Asclepias), the flowers and the small orange or white berries (A. ascoris), are both white.

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The red and green leaves and flowers of the agave (Agave americana) plant (A. americana) are sometimes pale green (A. chenopodiata). The green and red leaves and flowers of a plant grown for its seed are usually also orange, black, or yellow. The yellowish yellow fruits, which are eaten raw or in salads, are also orange and sometimes black. In one family of plant (Anacardiaceae) each species bears a yellow flower and a red fruit, but in others (e.g., Asclepias), the flowers and the small orange or white berries (A. ascoris), are both white. It seems to be true that the red, yellows, and greens of the agave plant (Agave americana) are the same. The red, yellows, and greens of an Indian plant (Agaricaria spp.) are identical, whereas the yellow, blacks, and grays of one plant (Cambium spp.) resemble saffron. The only difference is found between the plants, the red and the green, that are grown for their seed.

The red, yellows, and greens of an Indian plant (Agaricaria spp.) are identical, whereas the yellow,