How to Start an Indoor Herb Garden
Fresh, Fast Flavor from Your Own Windowsill
-- By Leanne Beattie, SparkPeople Contributor
Do the changing seasons leave you a little wistful for summer’s wealth of fresh produce? Then keep the growing season going all year by starting an indoor herb garden! Even if you have little experience with plants or very little space to work with, an herb garden is the perfect way to bring a bit of Mother Nature into your home, no green thumb required! And growing your own herbs is much more convenient—and affordable—than buying them at the local grocery store.
Oregano, chives, mint, rosemary and thyme are commonly grown indoors, so pick a few of your favorites to begin. If you like to cook, you’ll love having fresh herbs right at your fingertips—just snip and sprinkle fresh chives on your steaming baked potato or add some pungent oregano to your special homemade spaghetti sauce.
To start your herb garden, you must have a sunny window available that receives at least five hours of sunlight per day. Most herbs hail from Mediterranean locales and need the light to thrive. Keep your home between 60º and 70º to create the ideal growing conditions.
While you can start your herbs from seed (more on that below), it’s easier to buy starter plants from a local nursery or farmers market. There are several types of containers you can use for the plants, but terracotta planters are very popular. Make sure your pots have drainage holes in the bottom so your herbs don’t rot. Keep a saucer or another similarly shaped item underneath to catch the excess water as it runs through. Whatever container you select should be deep enough to promote proper root development, ideally from 6-12 inches deep. You can plant multiple herbs in one container or select individual 6-inch pots for each plant.
Take care when selecting the type of soil for your herbs, as plants are very vulnerable to soil-born diseases. It’s a good idea to go with a store-bought potting mix. Your local gardening center can help you select the right one for your needs. Be sure the mix is lightweight and will drain well. Pour a two or three-inch layer of potting soil into the bottom of your container and place your plant gently in the container. Finish filling it with potting mix, pressing it firmly around the plants. Leave about an inch of space at the top to make room for watering. <pagebreak>
Don’t kill your herbs with kindness by watering too often: Excess water is harmful to the roots and causes rotting. Fertilize your herbs once a month with a product labeled safe to use on edibles. Once you start to see new growth, you can begin to use your herbs for cooking.
If you’d like to save some money and start your herbs from seed rather than buying seedlings, you will need to babysit your plants a bit more. Many planters are too large to start seeds in, so plant them in a peat pot first. Fill the peat pot with planting mix and then place it in a small bowl of water until the peat pot completely absorbs the water from the bowl. Bury your seeds to a shallow depth (about 3 or 4 times the seed’s diameter), planting a few types of the same seed in one pot. Cover the peat pot with a small plastic bag to simulate a mini greenhouse!
Once the seeds have sprouted, you can transplant the entire peat pot into the larger planter. Place your pots in a sunny spot or underneath a grow light if your home doesn’t receive enough natural sunlight. Space out your herbs so that they don’t crowd each other and avoid putting your plants near a heating vent to avoid extreme temperature fluctuations.
Here are a few herbs that are particularly well suited for indoor growth:
- Basil (Ocimum basilicum): Basil is simple to grow from seed but it needs bright light and warm temperatures.
- Chives (Allium schoenoprasum): This member of the onion family is best used fresh. Chives like bright light and cool temperatures.
- Dill (Anethum graveolens): Choose a dwarf variety instead of the standard types that typically grow about 4 feet tall. You'll need to make successive plantings to ensure a continuous crop since dill doesn’t grow back after harvesting.
- Lemon balm (Melissa officinalis): This is easy to grow from seed and its fresh fragrance can be enjoyed in salads and drinks.
- Oregano (Origanum vulgare hirtum): This has a sharp, pungent flavor and can be grown from seed.
- Rosemary (Rosmarinus officinalis): Rosemary doesn’t always germinate well from seed; grow it from cuttings or as a complete plant from the nursery. The soil needs to be well drained, but don’t let it dry out completely.
- Thyme (Thymus vulgaris): Many varieties of thyme are available. Cover the seed only lightly with soil or not at all if you are starting your thyme from scratch. Keep the plants moist until they are flourishing.