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Caesar basil/Purdue University |
Basil (Ocimum
basilicum)
Basil is a versatile and popular herb grown for its leaves,
which may vary in color or flavors, such as lemon or anise. This annual loves
the heat and 10-hour sun, so don’t plant it outdoors until a few weeks after
the last frost date. Basil can be started or grown indoors, and it works well grown
in containers. Pinch the plant to promote branching and leaf growth, and to
prevent the plant from blooming. Fresh basil doesn’t freeze or dry well, so
store it fresh in a cool location. To preserve it, you can make and freeze
pesto. Companion plants for basil
include beans and tomatoes, but avoid planting with cucumber.
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Dill leaf/Purdue University |
Dill (Anethum graveolens)
Leaves, flowers and seeds of this annual are used in many dishes including pickles, salads and seafood. Seeds are sown directly outdoors after the last frost. With its feathery blue-green leaves, dill adds visual interest and texture to the garden with some varieties growing to three feet tall. But it can be done in containers, and the “Fernleaf” cultivar yields smaller plants. This herb (and parsley) feed caterpillars and help to create a butterfly habitat. Don’t plant with cabbage or carrots.
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Alex cilantro/Oregon State |
Cilantro (Coriandrum sativum)
Cilantro is a common ingredient in salsas and other dishes,
but the plant is grown for its seed too. The seed is called coriander, and it’s
harvested when the seed and leaves turn brown. If it is leaves you’re interested in, look for
“Chinese” or “long standing” varieties, which won’t form flowers or go to seed
as quickly as cilantro usually does. Plant it with tomatoes, onion and peppers
in a themed salsa garden.
Parsley (Petroselinum
crispum)
Parsley is a biennial herb grown for its leaves in year one,
and then usually removed before it flowers in the second year. Plant seed
directly as soon as the soil can be worked in spring, or place transplants a
week or two after the last frost – but transplant seedlings when they’re small,
because parsley will form a taproot. Soak seeds overnight to aid in
germination. Curly and Italian varieties can be harvested through the warm
season and star in lots of cooking recipes. Parsley likes to grow with tomatoes.
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Lisette parsley/Purdue University
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Purdue University professor Natalia Dudareva studies
rosemary's medicinal possibilities. |
Rosemary (Rosmarinus
officinalis)
Rosemary is a tender perennial and doesn’t usually survive
northern Indiana winters outdoors, but you may bring rosemary inside for the
winter in pots and place them in a cool, sunny location. Rosemary may suffer
from aphids or fungal disease indoors though. Outdoors, it makes a good companion planting for
carrots.
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Lavender (Lavandula
spp.)
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Munstead lavender/Colorado State University |
The most difficult herb to grow in northern Indiana, but
this perennial is worth it for its color, scent, texture and flavorful flowers.
The edible flowers can be used in salads or baking. Look for cultivars that are
hardy in zones 5 and 6, including “Lavender Lady” and “Munstead.” Lavender
likes a 6.5 to 7.5 soil pH, and is very picky about soil drainage – a soggy
soil can quickly kill lavender. Lavender can become woody without pruning in
spring, when you remove old growth but not stems that have new growth. Makes a nice border planting.
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Mint/southernliving.com
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Mints (Mentha spp.)
As easy to grow as lavender is hard! Mints are aggressive
perennials and should be grown in containers to keep them under control, even
if you’re just sinking the container outdoors as shown in the picture to the left. Mint also likes partial shade
with more moisture than most of the herbs. Trim back severely one time during midseason, and you’ll encourage new growth through until fall. Mints come in lots of flavors:
orange, chocolate and apple make nice tea flavors. But mint leaves are also good in
salads and stir fry, and not just for tea or sauce. Baking chocolate chip cookies. Tabbouleh. See the recipe for mixed-herb pesto posted below.
Oregano (Origanum vulgare)
A hardy perennial that likes full sun to light shade, it can be started from either seeds or transplants. It’s pretty in the garden, growing low with white/pink flowers in late summer -- but Greek oregano grows to 18-24 inches tall, a height to consider when planning. Oregano’s an important ingredient in Italian food.
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Greek oregano/Cornell University
Sage (Salvia
officinalis)
Several varieties of sage are available, but gray-leaf does
best in Indiana and can be grown well into November and December. Trim this
perennial in spring to encourage new growth, and consider replacing every 3-5
years because sage can become woody. Sage attracts butterflies, and
hummingbirds to the more-tender Pineapple sage cultivar with its scarlet
flowers in late summer. Grows from seed.
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Elfin creeping thyme/davesgarden.com |
Thyme (Thymus vulgaris)
There are more than 300 species and many varieties
available: lemon or caraway, creeping or tall. Thyme can even be a lawn substitute. This perennial can be grown from
seed, but many thyme varieties are grown from cuttings or dividing plants. Thyme flowers may be pink (as with silver thyme) or red, lavender
and white. In a sunny location with good soil drainage, thyme may grow for
years without pest or disease problems, but some can become woody and need to be replaced.
Mixed-herb pesto recipe
Chef Domenica Catelli, Sonoma County, Calif.
½ cup toasted pine nuts
9 large cloves of garlic
4 ½ cups fresh flat-leaf parsley
3 cups mixed fresh herbs (mint, basil, dill, oregano and/or
thyme)
¾ cup freshly grated Parmesan cheese
1 ½ tsp. salt
1 ½ cups extra-virgin olive oil
In a processor combine all ingredients except for olive oil.
Slowly add oil. Process until well-blended, then store in sealed/airtight
container. Refrigerate up to 1 week or freeze 6 months. Yields 2 ½ cups.
Herb harvesting, preserving and storage tips
Both wind and heat disperse essential polis quickly, and fewer oils are produced on excessively wet days. So choose a calm, dry morning and pick just after the dew has dried. Most herbs will have maximum oil content just before the flower opens, so this is a good time.
Never harvest more than one-third of the plant at once, so that it can regrow.
Dry bundles of 6-12 stems with lower leaves removed, and hang the bundle with an elastic band that will contract as the herbs dry. Keep away from sunlight in a cool spot. Individual leaves can be dried on racks or screens. Using a conventional or microwave oven is not recommended.
Chives, tarragon and some other herbs freeze well. Snip chives into ¼ inch pieces, and place into the freezer on a baking sheet. Put them into a bag and spoon out to use as needed. Herbs can also be frozen in ice-cube trays, or in tomato or meat stock (mint, tarragon, basil in vinegar).
Other herbs that grow
well in Indiana include: Tarragon, chamomile, chives and lemon balm.
Purdue University
Cooperative Extension Service advice: To prevent contamination and botulism do
not preserve herbs in oil. For more information on herbs in the home garden,
see HO-28-W online.