Bromeliad

Question

The flowers turned brown after having it in my home two months. Did I kill it?

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Answer 1

No, the flower has just reached the end of its life. If the leaves are still green and healthy, you are doing a good job.

You can remove the flower after it turns completely brown. Bromeliads only flower once in their lives, but the foliage will still look nice for a while, and you can reproduce the plant if it develops any "pups":

https://www.gardeningknowhow.com/houseplants/bromeliad/getting-bromeliads-to-bloom.htm