How to pronounce “chrysanthemum” in English

Here is a description of a bouquet of chrysanthemums in Madame Swann's chambers, which segues into mention of a sunset whose color is similar to the flowers, which

And it a pyrethroid, which is a synthetic analog of a toxin from a chrysanthemum flower.

They look sort of like little chrysanthemums to me, although each one of those is about a micrometer in diameter.

And I have noticed, for example, an interest in white chrysanthemum being put into a low-oxidized Tieguanyin.