Thanks to this informational video by Brighteon user Preaching to the Choir, you can grow organic turmeric indoors.
Watch the full Brighteon.com video here:
To grow any herb or spice indoors, you'll need to start with a clean source. Since you want to plant turmeric, obtain organic turmeric from a local grocery store, health food store, or at a farmer's market.
Use good potting soil. You can purchase organic soil, or you can make your own nutrient-rich soil mix.
When choosing a pot, consider a terracotta pot that "breathes." This means the pot allows for a bit of correction if you over-water the plant.
If you're purchasing a glazed pot, avoid ones made in China. China-made pots will have a glaze that goes all the way inside the pot. You'll need a pot that isn't fully glazed so air and water can move through the sides. Air movement can help stimulate root growth, which results in healthier plants.
In the colder months, avoid over-watering turmeric; it only needs sporadic watering. Don't use fertilizer, which will cause more harm than good, especially when you're trying to cultivate organic plants indoors.
As for light exposure, turmeric will grow under southeast exposure to west exposure. However, light from the south and southwest is best for the turmeric plant. This usually applies to individuals who live outside of USDA Zone 9.
If you're in Zone 8, you can try growing ginger outdoors by taking advantage of microclimates. Do take note that in Zone 8, turmeric won't be as hearty as ginger. (Related: How to grow, dry and grind your own turmeric powder from fresh roots.)
If the temperature inside your home is near 60 F, turmeric will actively grow. Since you're growing the plant indoors, you won't have to worry about exposing the plant to freezing temperatures. Turmeric is hearty from 30-40 F, but not for a sustained period.
To accurately assess the plant yield, start with one rhizome. This way, when you first harvest the turmeric you can easily gauge its growth. If you want to plant several rhizomes in one pot, take a photo before you cover them in soil so you can check how each rhizome has grown.
Try to leave the plant in one spot, or at least avoid bringing it outdoors, then bringing it indoors when the weather turns cold. This can help prevent the spread of bacteria, fungi, or insects, which will be bad for the turmeric and any other plants that you have growing inside your home.
In India, turmeric is often used as both a spice and a potent medicinal herb.
View the full guide by watching the video at this link.
Learn more about growing your own spices indoors at HomeGardeningNews.com.
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