Grow Mint in a Bottle

Propagate Mint
You can easily grow mints in water using a bottle or jar. Keep them in a sunny window, provide them with some liquid fertilizer, and change their water weekly. By spring they will be ready to plant out in the garden just in time for Derby day mint juleps.
Remember to put them out after the last threat of frost has past.
Even if you are planning to make them houseplants, spending some time out of doors each spring or summer will make your mints more fragrant.
There are many varieties of mint to choose from. If you will be keeping a number of varieties in your garden, avoid cross-pollination by keeping them separate.
For more information on keeping and using mint, see my post: Growing Mint