Papalo (Porophyllum ruderale ssp. macrocephalum)

Papalo (Porophyllum ruderale ssp. macrocephalum) is a traditional Mexican herb commonly used fresh with salads, sandwiches, soups, stews, meats or beans. It is only used fresh, or added to cooked foods at the end of cooking. It is never dried.

Many restaurants in Mexico keep a vase of this cut herb on the table so patrons may pull off some leaves and add it to their meal as desired.

In the garden it's a fast-growing annual that can reach 7 feet tall in a season, if not cut back. If you're using it regularly in the kitchen, you'll have no problem keeping it trimmed down to size. In fact, it's better if you do cut it regularly; tall slender plants are more prone to being blown over or simply bending under their own weight.

The leaves are rounded and about 2 inches in diameter. It grows best in full sun, but will tolerate partial shade.

Also known as papaloquelite, yerba porosa, or poreleaf (the undersides of the leaves have large visible pores).

As the days shorten in the fall, the plant ceases leaf production and starts to bloom. At first the buds point downward, but as they get ready to open they point up.

The flowers look like brushy stubble on the end of an elongated bud.

The blooms are pollinated by bees and are prolific seed producers. After a couple of months, the seedhead splits open to reveal a buff-colored fluff-ball that releases seed onto the wind, floating to new growing locations.

Papalo is native to Mexico, but can be found growing wild in the Southwestern U.S. Many websites list various health benefits associated with this herb, but I am unable to find any scientific documentation to support these claims. Eat it because it's good, and maybe it's good for you!

Read about the closely related subspecies, Quilquina.

Buy Papalo seeds

East Indian Lemongrass (Cymbopogon flexuosus)

East Indian lemongrass (Cymbopogon flexuosus) is one of the quickest and easiest herbs to grow from seed or divisions. It's also one of the most useful herbs to have in your garden.

Plants started early in the growing season will produce many leaves for harvest, and become quite a large plant by the end of the year. The useful part of the plant is the long blue-green leaves, which can easily reach 4 feet in length. They are thin and flexible, so they bend over and give the entire clump a soft grassy look.

East Indian lemongrass is the species used commercially for lemon scent and flavoring in a wide array of products. The fresh or dried leaves are useful in tea or other drinks, as well as soups, stews, fish, meats, or any dish that would benefit from a lemon flavor. Leaves can be harvested any time of the year, but they do have a sharp edge which can slice your skin similar to a paper cut, so be careful when cutting them.

The essential oil from this species has also been found to have strong anti-cancer qualities.

As cool weather arrives in the fall, the leaves take on a reddish-bronze coloration.

In locations with nearly year-round growing conditions, the plants send up tall flower spikes in the late fall or early winter. These plumes of flowers can reach a height of 7-8 feet, adding to the ornamental appeal.

If you allow the plumes to remain all winter, seed will be produced and you're likely to find many lemongrass seedlings coming up in the surrounding area in spring.

As the common name indicates, Cymbopogon flexuosus is native to India. In some regions this species is known as cochin grass or Malabar grass. It is recommended for USDA Zones 8-11, but can be grown as a container plant anywhere. In fact, the plant in the top photo is about 6 feet tall in a 1 gallon pot!

White turmeric (Curcuma zedoaria)

Curcuma zedoaria is very similar in appearance to golden turmeric, although somewhat smaller-growing and not quite as prolific. The primary visual difference is that the rhizomes are white instead of the yellow-orange color of turmeric.

This species is also known as white turmeric or zedoary, although herbalists often sell several different species under the name zedoary. Sometimes they will differentiate between "long zedoary" and "round zedoary" based on the shape of the rhizomes of the different species. Apparently they have similar medicinal uses, which may explain part of the naming confusion. There was also much confusion among early plant collectors and their plant descriptions. I base my identification of this species on a scientific paper titled "Taxonomic and nomenclatural puzzles in Indian Curcuma". It's probably only worth a look if you have a background in botany or taxonomy!

The leaves are broad and thin-textured, reaching 2 to 3 feet in height. Plants are in active growth during the warm months and go dormant as the days shorten in late fall and early winter. Growth resumes by mid-spring.

The rhizomes can be dug anytime the plants are dormant. Break off the "fingers" for use in the kitchen and replant the main rhizome for next year's crop. To me it tastes something like a strong-flavored carrot-parsnip blend with a peppery aftertaste. I like it grated in a salad or finely chopped into mixed vegetables or stir-fries. It's frequently added to pickled vegetables or curries.

Zedoary is used medicinally to treat inflammation, anxiety, stress, and fatigue according to WebMD, although there has been little scientific research done on this plant. Pregnant or breast-feeding women are advised not to take this supplement. Zedoary may also be applied directly to the skin as a mosquito repellent.

Curcuma zedoaria is native to Southeast Asia. It grows well in USDA Zones 8-10 and can be grown as a container plant in colder locations.

Also see: Curcuma longa

Golden turmeric (Curcuma longa)

Curcuma longa, commonly known as turmeric or Indian saffron, is a ginger relative that has long been used to add flavor and color to food. It also has medicinal applications, and is used to treat arthritis, heartburn, stomach pain, headache, colds, fever, depression, Alzheimers, and liver problems, all according to the doctors at WebMD.

As a garden or landscape plant, turmeric thrives in tropical and sub-tropical regions. Turmeric leaves are broad with heavy parallel venation and thin texture.

The foliage is light green and reaches about 3-4 feet in height over the course of the growing season. Turmeric grows best when it gets plenty of moisture throughout the growing season, and will tolerate sun or light shade.

Late in the year, the foliage declines as the plants go dormant. Now is the time to dig your harvest. Rhizomes branch freely as they grow, making a large mass close around the stem of the plant. Lift the entire clump and spray it with a strong jet of water to expose the golden wonder of turmeric.

You can break off the rhizome "fingers" for use in the kitchen. Grate fresh turmeric into chutney, pickles, meats, vegetables, rice and salad dressings. The flavor gets stronger as it's cooked so use it sparingly until you're familiar with the results. Turmeric tea is another easy way to get the health benefits of this amazing plant. It can also be used as a dye, so be aware that it will stain just about anything it touches a bright yellow color!
During the growing season, turmeric leaves can be used to wrap and cook food.

Turmeric stores best in the ground, so only dig it as you need it through the winter. I usually dig up a whole clump, break off what I need immediately, and "plant" the rest of the clump in a pot of mulch or compost. This makes it easy to retrieve fresh turmeric whenever I want it without digging up more clumps. It may also be stored in a sealed container in the refrigerator.

Extra rhizomes may be dried and ground to a powder for use during the summer months when the plants are in active growth.

Replant the mother stem with a portion of rhizome to grow again next year. Turmeric can also be propagated by planting some of the individual fingers just under the soil surface. When temperatures warm in the spring, growth will resume.

Curcuma longa is native to Southeast Asia and is recommended for USDA Zones 7b to 10b, but can be container-grown in colder climates.

See also Curcuma zedoaria

Ginger root (Zingiber officinale)

Ginger root (Zingiber officinale) has been one of the most widely used spices since ancient times. It has a variety of documented health benefits and is easy to grow as well.
The ginger "root" is actually a thick rhizome that grows right at the soil line and supports upright canes of leafy green foliage. The canes get 3-4 feet tall and the leaves are long and narrow, giving a bed of ginger a grassy appearance.

A long growing season is required to get a good harvest, and commercial ginger farms are usually in tropical regions with regular rainfall throughout the growing season.
Ginger can also be grown in containers, but the yield will generally not be as great as plants grown in the ground.
Late in the growth cycle, flower buds emerge from the rhizome and reach about 8 inches in height above the soil line. Small cream-colored flowers with a reddish-brown lip emerge from the bracts of the flower bud a few at a time over a period of a few weeks. Each flower is only open for a few hours in the morning, and the inflorescence is often hidden by the foliage.

The rhizomes continue to increase in size and weight during the growing season. In the top photo you can see the progression in the size of the rhizome as it grows from left to right.
Late in the year the swelling rhizomes may even push up out of the soil as they grow. The ginger may be harvested at this stage and is sometimes marketed as "baby ginger". Because it is more tender and less fibrous, this is the stage in development used for pickled and candied ginger.

In late fall, the canes wither and dry up as the plants go dormant.  At this time the mature ginger is ready to harvest. Since the rhizomes are very near the surface, they are easy to dig. In loose soils, you can just brush away the dirt from the top of the rhizome and gently dig it up with a trowel or small shovel. Store it in a cool dry place until ready to use. Rhizomes left in the ground will sprout again in the spring and have a larger yield the following year. If you dig more than you can use immediately, you can freeze the excess harvest for later use.

Note that fresh ginger is light in color with only a thin skin, as seen in the top photo. It does not have the thick brown peel usually found on dried and imported ginger root, even though imported ginger is often marketed as "fresh". Newly harvested rhizome only needs a light scrubbing to make it ready for the kitchen, while dry imported ginger will have a tough fibrous skin that needs to be peeled before use.

Ginger root is used in the kitchen to flavor tea, cookies, cakes, and many other sweet or savory dishes. The fresh leaves can also be chopped and added to soups or stews for a milder ginger flavor.
Medicinally, ginger is used to treat nausea, headache, muscle and joint pain, and arthritis.

Zingiber officinale is native to Southeast Asia and is recommended for USDA Zones 8-12. It is propagated by planting pieces of the rhizome about 1 inch deep at the start of the growing season.

Hoja santa, Acuyo (Piper auritum)

Piper auritum is a tropical herb that is variously known as hoja santa, acuyo, pepperleaf , Vera cruz pepper, false kava and root beer plant.
This species is very fast-growing to a height of 12 feet or more with stout upright stems and individual leaves that often grow more than a foot across. The leaf surface has a velvety texture.

It is these large leaves that are used to wrap tamales or meats before cooking, giving a distinctive flavor to the food inside. The leaves are also an essential ingredient in mole verde, and are chopped in soups and egg dishes. They even add a delightful flavor to tea.
The flavor is a complex blend of sassafras, anise and black pepper. Indeed, Piper auritum is in the same genus as black pepper (Piper nigrum). Much of the flavor comes from the naturally-occurring essential oil safrole, which has been shown to be a carcinogen in animal studies. Subsequent studies have shown that humans metabolize the safrole differently and it does not break down into a carcinogenic metabolite, so it's safe for humans to eat.
In Panama the leaves are fed to fish that are later cooked and eaten. The flesh of the fish takes on the flavor of the leaves it has eaten.
Plants spread by underground runners and a single plant can quickly become a large clump capable of providing all the acuyo you can eat. Here you can see how the original plant sends up a few clustered stems, then starts spreading farther away.

The thick stems are covered with prominent lenticels and are noticeably swollen at the nodes.

New growth sports numerous spadix-type flower spikes which look something like white rat tails.

Each spadix emerges opposite the leaf along the stem. It starts out pendulous, but elongates and becomes erect as it matures, eventually achieving 8-9 inches in length.

Piper auritum is native to tropical America from northern South America to Mexico. The leaves will be damaged by frost, but the root system will survive through a hard freeze and the plant is reportedly root hardy through USDA Zone 8.
It will grow in full sun or full shade, but with full sun in high summer heat, the leaves droop during the afternoon hours.

Chives (Allium schoenoprasum)

Chives is a popular herb commonly grown in gardens around the world.
Botanically, the plant is known as Allium schoenoprasum (AL-ee-um skoy-no-PRAY-sum).
Plants grow a foot or more tall and produce several 1-inch diameter lavender flower heads throughout the spring and early summer. The leaves are round and hollow, similar to other members of the genus.

Harvest chives by clipping individual leaves with a sharp scissors. They have a mild onion flavor and can be used fresh from the garden in a wide variety of recipes. They may also be dried or frozen for later use, although dried chives lose a lot of their flavor. The small bulbs are generally not eaten.

The chopped leaves are often added to green salads, egg dishes, potatoes, vegetables and soups. The flowers are also edible.

Chives are perennial and multiply fairly rapidly, eventually forming large clumps. It may be necessary to divide the clumps every few years to encourage new growth and to keep them from getting too dense.

The species is believed to have originated in Asia, but has been transplanted around the world by gardeners. They are recommended for USDA Zones 3-9, and grow year-round in the warmest parts of this range. Full sun exposure is best and they are drought-tolerant once established.

Allium canadense (wild onion)

Allium canadense is a small species of onion that grows wild over a large part of North America. In some areas it grow so prolifically it is considered a weed. In other areas it is listed as a threatened or endangered species.
These onions never bulb up, instead remaining the size of tiny scallions. The entire plant is edible either raw or cooked. In the kitchen they can be used the same way as conventional green onions.
Foliage is bright green and somewhat stringy in appearance. Leaves are flat in cross-section, not rounded and hollow like many other alliums, and can reach more than a foot in length.

In the warmest parts of its range this species grows during the cooler months and spends the summer in a dormant state. In northern states the growing season is reversed.

In early spring, it appears the plants are getting ready to flower when they send up blue-green stems topped by a large bud, but when the bud opens, mostly what you see is a group of small onion bulbils.

There are only a few white flowers scattered among the pearl-sized onions. Some of these bulbils sprout leaves of their own, forming a miniature plant on top of the stem from the mother plant.

When the plant goes dormant the bulbils dry up, loosen from the stem, and drop to the ground where they wait for the next growing season. It often takes a couple of year for them to reach a harvestable size.

Allium canadense grows in USDA Zones 4-9 in full sun to part shade. Regionally popular common names for this species include wild onion, wild garlic, meadow onion, and meadow garlic.

Tetradenia riparia (Iboza)

Tetradenia riparia is a shrubby plant with highly fragrant foliage and spectacular winter flowers. The leaves are thick with a scalloped edge. Glandular hairs cover both sides of the leaf, giving it a sticky feel. They emit a strong scent that remains even when the leaf dries. In its native Africa, the leaves are added to stored seeds and grains to keep out weevils and other injurious pests. There are also many traditional medicinal uses. Simply inhaling the scent of the crushed leaves is supposed to relieve headaches. A tea made from the leaves is used for colds and flu.

In winter the tip of every branch is covered with clusters of snow-white flowers. Even the smallest of plants bloom. I've had them flower in a 4-inch pot with a flower spike taller than the plant itself. The blooming period may extend for more than two months as new buds continue to open at the branch tips. The species is semi-deciduous, depending on the climate, so in some locations the plants will be nearly bare when they come into bloom.

Tetradenia can grow to 8 or 9 feet in height, but is cold-sensitive, and only recommended for USDA Zones 9B-11 when planting in the ground. At 30°F the plant completely defoliates, but will leaf out again from the bare stems. Fortunately, it thrives in containers. In slightly colder zones it may be grown as a perennial (it's supposedly root-hardy to Zone 8), but frost may come before the bloom. Even then, it's still worth growing for the scented foliage and medicinal uses.

The species name, riparia, means growing on the banks of rivers, and that is where the plant is frequently found in its native habitat, as well as in dry wooded valleys and on hillsides. It grows well in full sun, but in hot climates it benefits from a little shade during the middle of the day.

The common name Iboza is a native Zulu word referring to its aromatic qualities, and that name is sometimes seen listed as the genus for the plant. Other common names include misty plume and ginger bush. Cultivars supposedly exist bearing pink or lavender flowers.

Carica papaya

Carica papaya is a fast growing tropical herb that produces delicious fruit. Many different strains exist, producing fruit sizes ranging from 1 to 20 pounds. The flesh color also varies from plant to plant and may be yellow, orange or reddish.

Papaya grows rapidly. Under ideal conditions flowers and fruit will be produced the first year from seed, often starting when the plant is only 4-5 feet tall. It takes 3-4 months from flower to mature fruit.

When the skin is mostly yellow it's time to pick the fruit, cut it open, and enjoy! Even the black seeds are edible and have a peppery taste similar to nasturtium.

Mature green fruits may be cooked as a vegetable. A young plant will produce 2-3 ripe fruits per week. Older, branched plants will produce many more.

Leaves are palmate and deeply lobed, often growing more than 2 feet across. In the East Indies, young leaves are cooked and eaten like spinach. Crushed leaves wrapped around a tough cut of meat before cooking will help tenderize it. The milky latex exuded by immature fruits is also collected and used in commercial meat tenderizers.

Old plants form thick trunks that support a branching canopy of foliage. Branching is often stimulated by some injury to the growing tip, such as a light freeze. This 10-year old papaya has a trunk circumference of 4.5 feet at the base.

Carica papaya has a complex sexual morphology. Plants may be male, female or hermaphrodites. All flowers are very fragrant.

female flower

male flower

Papaya is believed to have originated in Central America, but is now cultivated in tropical regions around the world. They are recommended for USDA Zones 10-11, but due to their rapid maturity, can be successfully grown in Zone 9 as well. I have had several plants live more than a decade in my Zone 9B garden. Most references indicate that productivity rapidly declines with age, but I find older, branched specimens produce far more fruit than young, single-trunk plants.

Cuban Oregano (Plectranthus amboinicus)

Plectranthus amboinicus is a tender perennial herb with many common names including Cuban oregano, Spanish thyme, oregano brujo, broadleaf thyme and big thyme.
The leaves are chopped and used with stuffing, salads and meats. It can also be used as a substitute for oregano or sage. If you've picked a few leaves for use in the kitchen and didn't use them all, do not refrigerate what's left. This is a tropical herb and refrigerator temperatures quickly cause brown deteriorating spots. Excess leaves store very well in a sealed plastic baggie or container at room temperature for up to two weeks.
The leaves are large, fleshy and covered with fine hairs.

In full sun the leaves are generally 3-4 inches in diameter, but with a little shade they can easily reach 6" or more in length. Long stems tend to flop over, so keep the plant compact by frequent harvest of the growing tips for use in the kitchen.

This plant is recommended for USDA Zones 9B-11. In areas that experience frost, Cuban oregano is best grown as an annual during the warm months. In frost-free areas the plant is perennial, developing a woody stem at the base and growing about 2 feet in height.

Older plants are not as vigorous, so I like to plant fresh starts each spring that quickly become large specimens. Cuban oregano thrives in sun or part shade. There is also a variegated form that is slower-growing.