Are hyacinths an annual plant or a perennial?
They are technically perennials but some varieties have a hard time surviving for more than a few years.
I got a plant at a baby shower, which is beautiful and already flowering. I live in Minnesota. Is it possible to put the plant in the outside in the ground? Or can I wait till the flowers die off and then plant it in the ground for next season?
This article will help you:
https://www.gardeningknowhow.com/ornamental/bulbs/bgen/how-to-plant-a-flower-bulb-in-your-garden-after-winter-forcing.htm
What can I do with the pods left on my hyacinth plants? Can I plant them for new bulbs or just cut down the whole plant after it has flowered?
You can grow new hyacinth from the seed pods, but they will take many years before they are mature enough to flower. Most people simply cut them off and allow the plant to focus on storing energy for next year's blossom.
You can cut the seed pod off, but do not cut the leaves off until they turn yellow. The leaves are how the plant builds energy for next year's bloom.
I recieved a hyacinth plant in a clay pot. I want to put it in the ground. I know I must water it every day until established. But then does it require a lot of water to remain healthy? How often?
Once established, you will need to give it 2-3 inches of water a week, including any rainfall you get.
I have bought hyacinth bulbs ready for indoor planting at the end of September. What is the best way to store them meanwhile?
Store them in a cardboard box in a cool but dry location, such as a closet, until ready for planting.
What are the little green pods at the the end of the Hyacinth plants when they die off. What do I do with them?
It is a seed pod. You can cut it off. Cutting it off will make your blooms larger next year.
I received a hyacinth flower for Valentine's Day. It had 3 lovely blooms, which are now fading. What do I do with it now?
You could plant them out in the garden. This article will help you: https://www.gardeningknowhow.com/ornamental/bulbs/bgen/how-to-plant-a-flower-bulb-in-your-garden-after-winter-forcing.htm