Propagation is not a problem for mint, Menthaspicata. It grows very easily from cuttings, even in water. Alternatively, it grows efficiently from division of its dense network of basal stolons. A more likely problem is its potential invasiveness. It spreads everywhere it finds water, even into other vegetation. Therefore, it is more popular in pots than in the ground.
Mint is as popular for its herbal or culinary application as for its aesthetic appeal. Various cultivars and hybrids provide various flavors and aromas of mint. It is handsome alone in pots, or can mingle nicely with annuals, perennials or herbs. It is a traditional component of mixed window boxes. With containment it can be a splendid small scale ground cover.
Mature growth is generally less than a foot high. It can sprawl almost three feet high onto low shrubbery, though. Occasional shearing, particularly after winter, maintains tidier and lower growth. Paired evergreen leaves are about two inches long, with serrated margins. Slender floral spikes of tiny white or pink flowers may get slightly shabby during summer if not shorn.
English lavender is likely the most common of this genus, with the most cultivars. French lavender is the primary culinary species. Spanish lavender, Lavandula stoechas, should likely be more popular than it is. All lavenders live for only a few years. Spanish lavender is more likely to self sow to replace itself, though. It can naturalize in favorable situations.
Spanish lavender is an evergreen shrub of irregular form, that grows as tall as three feet. Its finely textured foliage is grayish or drab green. Individual leaves are quite narrow and only about half an inch to an inch and a half long. Roots are not finicky about soil, but are likely to rot if irrigation is generous. Spanish lavender prefers warm and sunny exposure.
Bloom begins as soon as weather warms in spring and continues into summer. Sparsely sporadic bloom can continue until autumn. Dense floral spikes stand several inches over their foliage, on bare stems. They would not be very colorful if not for their few long upper bracts. Bloom is typically lavender, but may be bluish lavender, pink or very rarely white. It delights bees.
California bay can work somethin like culinary sweet bay.
While the winter weather is still cool and damp, most of the herbs in the garden are not very impressive. Like vegetables though, herbs that are new to the garden should be planted as winter ends when no more frost is expected. Also like vegetables, some herbs are easier to grow from small plants or seedlings purchased from nurseries, and others are easier to sow directly from seed. Some are annuals or biennials. Others are perennials. Still others are woody plants.
Basil, cilantro and dill are commonly and easiest to grow from seed. Tarragon, sage, marjoram, mint and thyme are probably easier to grow from small plants found in nurseries. Chives, oregano, fennel and parsley are easy to grow by either means. Woody plants like rosemary, lavender and sweet bay can be grown either from small plants in the herb section of a nursery, or more substantial landscape plants.
All sorts of plants are grown as herbs to be used as seasoning, aroma (foliar fragrance) or even medicinally. Some are best grown strictly as herbs in an herb garden or incorporated into the vegetable garden because they lack visual appeal or because they eventually get cut and harvested. Others function quite well out in more refined landscapes.
Basil, cilantro, tarragon, sage, dill and marjoram are more utilitarian but less visually appealing herbs for the herb or vegetable garden, although some look good until they get harvested. Chives, mint, oregano, parsley and thyme look good enough for a landscape, and are not often harvested in quantities large enough to compromise their appearance. Fennel also looks good enough for the landscape, but then gets removed completely when harvested.
A few herbs are actually more often grown for their practicality in the landscape than in the herb garden. Thyme sometimes gets planted as a ground cover between stepping stones, since it is so compact and imparts its fragrance if trampled. Rosemary is actually a rather common ground cover where the soil does not hold enough moisture for more demanding plants. The various lavenders are nice ‘perennial’ shrubs. (‘Perennial’ shrubs do not last as long as woody shrubs.) Sweet bay is a nice small tree where space is limited, or can be shorn into a small hedge.
It seems that most herbs like good sun exposure and warmth during the summer, with well drained soil. Most do not need too much water once established. Only basil and parsley need regular watering. Chives and mint are not so needy, but do prefer to be watered regularly as well. Mint is commonly grown in pots because it can be somewhat invasive.
Spanish lavender is as herbal as English lavender.
While waiting for my white mocha at the White Raven coffee shop, I noticed white sage smudge sticks (incense) for sale. I also noticed that white sage is a component of at least one of the many herbal teas available. Although white is my favorite color, I am doubtful that it would be one of my favorite flavors. White sage seems to me to be much too pungent. I suppose that I should at least try it to satisfy my curiosity. Otherwise, the many other herbal teas included more docile but equally compelling herbs like sunflower petals, cactus flowers, chamomile, lavender, mint, catnip and various geraniums.
My mocha was ready too quickly, before I could investigate all of the herbal teas. Since I needed to get out of the way at the counter, I went to peruse the incense, where I again noticed some familiar herbs, like various sages, lavender, rosemary and bay laurel. A few plants that I do not commonly think of as herbs are common components of incense as well, such as juniper, cedar and pine. This was all too baffling; so I took my mocha to a table out front by a roadside garden, where I noticed some of the exact same herbs that I came outside to get away from!
All these fancy herbs and incenses and girly boutique beverages are simply not my cup of tea. Although at the White Raven, I know better than to be surprised by what might be in an excellent tea. Regardless, the garden out front is still more my style, and reminds me of how so many utilitarian herbs can also be very appealing ornamentals.
Rosemary, lavender and several of the sages are actually quite common in ordinary landscapes, whether or not anyone even notices that they have herbal merit. Some types of creeping thyme are sometimes used as ground cover in small areas, particularly around pavers or stepping stones where they release their fragrance if lightly trampled. Santolina and various yarrows and scented geraniums are less ordinary, but are similarly grown more often for their aesthetic value than as herbs. In my own garden, I really do not know what yarrow is good for. I like to add geranium leaves to sun tea, even if it makes it a girly boutique beverage.
Some herbs are almost too happy in my garden. The feverfew, chamomile and nasturtiums (my favorites!) that grew from seed from Renee’s Garden two years ago have spread outside of their area. I actually gave my mints away before they could escape. The catnip is confined to a hanging pot by the neighbor’s cat who gets sufficiently overindulgent to eradicate any self sown seedlings below. I never would have guessed that an inebriated cat could be so useful! Calendula, chive and oregano have all been grown from seed and become happily naturalized.
Historical herbal applications were the origin of its now silly name. Feverfew, Tanacetum parthenium, is a relative of chamomile. Its leaves are useful for herbal tea like floral buds of chamomile. Feverfew is delightfully aromatic, although some may disagree about how delightful it is. Some believe that it can repel unwanted insects, but may also repel bees.
Feverfew is likely more popular for its floral display than its aromatic foliage. Its abundant small composite blooms are very similar to those of chamomile. They are nearly as wide as three quarters of an inch. Their yellow centers are a bit flatter. Their ray florets (petals) are a bit wider. They bloom on open trusses that hover loosely above their basal foliage.
Feverfew has lime green foliage with a fine texture. It can stand almost two feet high with bloom standing a bit higher. It migrates slowly, but can slowly get where it should not be. Pruning scraps can root as cuttings. Feverfew prefers rich soil but does not need it. Good sun exposure and even watering are more important. ‘Aureum’ is bright greenish yellow.
It is neither as variable as the many varieties of English lavender, nor as traditional as French lavender, but Spanish lavender, Lavandula stoechas, has the most unusual flower spikes. These short plump spikes are less than two inches long, but are topped with one or two pairs of distended terminal bracts that are almost as long; like simple little packages with big ornate bows. The flower spikes get their color from densely set bracts that surround the minute flowers, and can be various shades of purple or purplish pink or even grayish white. The large terminal bracts are lighter shades of the same colors.
Bloom begins during warm spring weather and continues into summer. Flower may stay close to foliage on stems less than two inches long, or may stand more than six inches above the foliage. The aromatic grayish leaves are narrow and about an inch long.
Mature plants may be three feet wide, and nearly as tall. Aggressive shearing after bloom promotes secondary bloom later, and keeps plants compact. Without pruning, old plants eventually die out in the center.
All lavenders want good drainage and good exposure, but do not want mulch or fertilizer. Inadequate drainage, crowding or mulch can promote rot. Fertilizer can inhibit bloom. Once established, lavenders do not need much water.
Foliar aromas and flavors that are useful for culinary application deters many grazing animals.
The infinite variety of colors, fragrances, flavors and even textures that plants use to solicit the help of wildlife is amazing. Flower color, fragrance and sometimes texture are customized to attract very specific pollinators, and guide them to where they are needed. Many flowers direct and reward their pollinators with flavorful nectar. Fruit color, flavor and aroma attract specific animals to take the fruit, and disperse the seeds within. There is no end to what plants will do for their friends. We are merely secondary beneficiaries.
It is ironic that we also enjoy aromas and flavors that are instead designed to be objectionable to plundering herbivores. For example, the appealingly pungent foliage of most herbs is actually intended to repel grazing animals or feeding insects. We not only exploit these herbs for culinary purposes, but also to add their aromas to our gardens.
Lavender, mint, rosemary and the various thymes and sages are the most popular herbs that are attractive both aromatically and visually, whether or not we actually use them in the kitchen. Rosemary is actually a common and practical ground cover for large areas. Thyme is a good ground cover for smaller areas, and stays low enough to be grown around stepping stones where it becomes even more aromatic if stepped on.
Grecian or sweet bay is another herb that actually grows into a sizeable but practical evergreen tree. The native bay laurel is a bit too large to be as practical where space is limited, but is even more pungent. Although generally not useful as herbs, the various cypresses, pines, cedars and eucalypti are appreciated for their aromatic foliage as well. Incense cedar is particularly pungent.
Two of my favorite types of plants, junipers and geraniums, are among the more common aromatic shrubbery. Although actually considered to be perennials, zonal, ivy and of course, scented geraniums, can be used as small shrubbery or small scale ground cover. Junipers of course, range from ground covers to shrubbery to small trees.
Rockrose, breath of Heaven (Coleonema spp.) and myrtle are all quite aromatic. The old fashioned myrtle that gets considerably larger than the modern compact variety is even more aromatic. Lantana is an aromatic ground cover or low mounding shrubbery.
The aromas of aromatic foliage are strongest as fresh new foliage emerges in spring, and particularly after spring rain. Some people like to put aromatic plants where they will be slightly in the way, since foliage relinquishes its aroma more readily when slapped with a gate, bumped, or otherwise disturbed.
Is this catnip, Nepeta cataria? Again, I am baffled by something that should be very easy to identify. It certainly resembles catnip visually. It almost smells like catnip. If I did not get it from a small curbside garden that Rhody and others of his species leave messages for each other in, I would have confirmed that it tastes like catnip. Perhaps I should be more than adequately convinced that it actually is as I suspect.
Nonetheless, I am not yet convinced. Catnip is rare here. I know of no one who grows it. Those who have tried ultimately found it destroyed by frolicking cats. It really should be grown in hanging pots that cats can not reach. It seems unlikely that it could survive for long within a curbside garden near where a few cats live. It also seems unlikely that it would spontaneously appear where it had not been planted intentionally. Only small succulents were planted below a large camellia within its particular small garden. All the small weeds that grow nearby are common.
Regardless, I could not ignore a branched stem of this questionably identified species that had broken off and was laying limply over undamaged foliage. Obviously, it needed to be removed. Obviously, I obliged. I brought it back and processed it into several small cuttings. I collected the scraps of leaves and internodes for an associate to take to a feline acquaintance of his for possible confirmation of its slightly questionable identity. I await the assessment, although it will be from someone who can not decide to stay inside or go outside after meowing incessantly for someone to open a door. A second or more opinions may be necessary from other members of this innately indecisive species if the first attempt at confirmation is unsuccessful.
Rosemary is more common in common landscapes than within dedicated herb gardens.
Because of the unusually mild weather this past winter, many plants are waking up from winter dormancy early. The shrubby herbs like sage, rosemary, lavender and tarragon are already outfitted with fresh new foliage that will soon obscure the foliage that lingered through winter. Those that have not yet bloomed may do so sooner than expected.
New herb plants can be added to the garden any time now. Even if rain resumes (or actually ‘starts’), there should not be enough to cause new plants to rot, particularly since the warming weather will keep plants growing faster than the root rot that can kill them through cool and damp winter weather. Sage, tarragon, marjoram, mint and thyme are easier to grow from small plants. Dill, cilantro and basil are easier to grow from seed sown directly into the garden. Oregano, fennel and chives can be grown by either means.
Many of the woody herbs, like rosemary and the many varieties of lavender, are commonly used in landscaping, so can be found in even the most basic nurseries that do not feature a selection of other herbs. Because almost all herbs have sensitive root systems, they should be planted while small. The smaller 1 gallon plants are easier to grow (as well as less expensive) than the larger 5 gallon plants are. However, sweet bay is an exception that does not mind being planted as a 5 gallon or even larger tree where it needs to look mature now, even if only a few leaves get used in the kitchen. Low growing rosemary is a common ground cover. Upright varieties can be shorn into small hedges. Thyme makes a nice small scale ground cover between stepping stones, where it shares its fragrance when stepped on.
Chives, oregano, parsley, mint and thyme are not often marketed as common landscape stock, but are visually appealing enough to appear in the landscape. Herbs that are not so visually appealing can be planted in a separate herb garden, among vegetables in a vegetable garden, or simply out of the way. Basil, cilantro, tarragon, dill, sage and marjoram can be too unkempt at times. Basil and cilantro look good most of the time, but then get harvested in large enough quantities to leave bald spots. Fennel can be a striking foliage plant for a while as long as no one minds that it will eventually get harvested.
Because of the common name, California bay, Umbellularia californica, sometimes substitutes for Grecian bay. The two are actually very different. Grecian bay is a culinary herb that grows as a compact tree. California bay has a distinctively pungent flavor that is objectionably strong for most culinary applications. It grows fast to thirty feet tall, and gets a hundred feet tall in shady forests.
Because it gets so big and messy, California bay is not so popular for planting into home gardens. However, because it is native, it sometimes self sows into landscapes. Some mature trees live within gardens that developed around them. California bay can work well in spacious landscapes, with plants that do not mind its shade and leaf litter. Annuals and seedlings dislike the leaf litter.
Old forest trees make the impression than California bay typically develops an awkward and lanky form. That is only because they do what they must to compete for sunlight. Well exposed trees, although lofty as they mature, are more densely structured. Some have a few big trunks, with checked gray bark. Old trees are likely to develop distended basal burl growth known as a lignotuber.
Tony Tomeo 