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Collard

Some varieties of collard are perennial.

Cabbage, broccoli, cauliflower, kohlrabi and Brussels sprout are all of the same species. Brassica oleracea is weirdly diverse, and also includes kale and collard. All varieties are collectively the cole crops. They are cool season vegetables that grow from autumn until spring. Most are biennials that grow as annuals. Some kales and collards are perennial.

Collard does not form heads like cabbage does. It instead grows loosely on stout stalks. Most are only about two feet high. A few perennial types can grow six feet high, and can grow from cuttings. All other types grow from seed or cell pack seedlings. More varieties are available as seed than as seedlings. Online markets offer more than nurseries stock.

Although perennial collards provide greens all year, they are better during cool weather. Also, collard greens are best while young and tender, before they mature too completely. They are easy to collect from the bottoms of the foliar rosettes, upward towards the tops. They need, however, to retain enough leaves to continue growing through their season.

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French Marigolds

Marigolds are traditional flowers for autumn.

The Maya actually cultivated marigolds long before the French. The ancestors of French marigolds, Tagetes patula, were native to Mexico and Guatemala. French horticulturists merely hybridized the varieties that are now most popular. The largest varieties can grow a foot high and broad. Most, though, stay significantly lower as compact bedding plants.

Contrary to their popularity during autumn, French marigolds are warm season annuals. With frequent deadheading, they can perform from spring until cool winter weather. They are popular as short term annuals merely because they perform best while young. Bloom is slightly less abundant as they age. They can perform as well for spring as for autumn.

Many varieties of French marigolds are available. Yet, their floral color range is limited to yellow, orange and red. Brown flowers are really dark orange. Creamy white flowers are really very pale yellow. White marigolds are uncommon because richer colors are more popular. Like most bedding plants, French marigolds want rich soil and regular watering.

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Cup Of Gold Vine

‘Variegata’ is a bit less aggressive.

Trellises, arbors and pergolas for this vine should be strong. Cup of gold vine, Solandra maxima, can grow quite large, and it can do so quite fast. It easily reaches forty feet high and wide. Within ideal situations, vines can grow a hundred fifty feet long! Fortunately, it is conducive to frequent pruning. It can grow as free standing shrubbery without support.

Flowers of cup of gold vine compensate for their lack of abundance with size. Individual flowers may be six to eight inches long and three to six inches wide! Bloom is not overly profuse, though. It occurs mostly between January and May, with a few sporadic flowers during summer. Bloom begins pastel yellow and darkens to richer gold as it progresses.

The simple foliage is nicely glossy. Individual leaves are alternate and two to six inches long. ‘Variegata’ produces delightfully variegated foliage, and is relatively docile. Cup of gold vine needs shelter from frost though, so may not be suitable where winters are cool. It grows almost too easily from cuttings or layers. Stems might root where they touch the ground. All parts of it are toxic.

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Yellow African Iris

Yellow African iris is commendably tough.

Common African iris is perhaps too common. That is likely because it is so resilient and easy to propagate. Once it inhabits the garden, it will likely stay there. Yellow African iris, Dietes bicolor, is about as tough and prolific, but it is considerably less common. Though similar to common African iris, it is distinct. It has a softer foliar texture and yellow bloom.

Bloom continues from spring through summer, as long as the weather is warm. The pale yellow flowers are only about two to two and a half inches wide. They hover on slim but tough stems just above their foliage. Several flowers bloom in succession on each stem. Without deadheading, seed pods can disperse seed. Seedlings can become numerous.

Yellow African iris grows with foliar fans that form dense basal clumps. Collectively, they grow four feet tall and three feet wide. However, they can grow substantially broader with age. Large clumps are tough, but otherwise easy to divide. Foliage is somewhat grassy. Without grooming, it can become cluttered with old foliage and deteriorating floral stems. Overgrown clumps can be cut back after winter.

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Morning Glory

Morning glory can bloom until winter.

Popular garden varieties of morning glory are descendants of various species of Ipomea. Too many species are involved to classify such varieties briefly. Perennial morning glory, particularly the blue dawn flower, can be invasive. Most others perform as annuals, so do not grow long enough to be invasive. However, they can self sow to become numerous.

Although it might self sow and grow in any soil, morning glory prefers rich and loose soil. It also prefers regular irrigation, and will wilt if its soil gets too dry. Roots disperse deeply, so dislike pots. Morning glory in pots typically stays smaller than the same in the ground. Morning glory grows best from seed, which should go into its garden at the end of winter.

Some annual varieties of morning glory can climb ten feet high. Some grow only four feet high. They are delightful on picket fences. Their cordate or lobed leaves are about two or three inches wide. Their simple circular flowers are about the same width. They bloom in rich hues of blue, purple, red, pink and white. Some types have stripes, streaks or spots. Several exhibit central star patterns.

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Night Blooming Jasmine

Night blooming jasmine is sweetly fragrant.

Looks can be deceiving. Night blooming jasmine, Cestrum nocturnum, does not look like much. It looks even less interesting in the darkness of night. However, its floral fragrance on warm summer nights is famously sugary and intense. Some might find it too intense. Nocturnal moths and bats are its preferred pollinators, so it is not fragrant during the day.

Because of its mundane appearance, night blooming jasmine is good in the background. It tolerates a bit of partial shade, so can be happy close to fences and buildings. It works well witin narrow spaces between houses and below high windows. Where winters are cool, it needs shelter from frost. It appreciates somewhat regular watering and rich soils.

Mature night blooming jasmine rarely grows higher than first floor eaves. It is quite easy to maintain lower, particularly if pruned aggressively after winter. Its narrow floral trusses suspend several small and narrowly tubular flowers. Individual flowers are about an inch long, and greenish white or pale yellow. Simple evergreen leaves are a few inches long, and narrow.

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Korean Arborvitae

Korean arborvitae is a small tree.

Arborvitaes are quite uncommon here. Korean arborvitae, Thuja koraiensis, is one of the more uncommon among them. It is therefore uncommonly uncommon, or even rare. Not many examples are observable within local landscapes. Yet, some compact cultivars are becoming more available from nurseries. It will likely become more popular in the future.

Korean arborvitae is a large evergreen shrub or small tree. In the wild, it grows as tall as thirty feet, and half as broad. ‘Glauca’ has bluish foliage and grows only about fifteen feet tall, and ten feet wide. ‘Glauca Prostrata’ gets only three feet tall, and about six feet wide. Flat foliar sprays with clasping scale leaves resemble those of more familiar arborvitaes.

Also like more familiar arborvitaes, Korean arborvitae appreciates regular watering. It is resilient to brief lapses of irrigation once established, though. It tolerates partial shade as well. Although it prefers sandy loam, Korean arborvitae adapts to most soil types. Soil of inferior quality is rarely a problem. Spider mites can possibly infest during warm weather.

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Giant Taro

Giant taro eventually grows quite large.

Even within confinement of large pots, giant taro, Alocasia macrorrhiza, is big and bold. Potted houseplant specimens grow about six feet tall. In the ground, they can grow twice as high. Individual leaves can grow three to six feet long, and two to four feet wide. They mostly point upward, but may sag to point downward. Trunks, if any, are short and stout.

Giant taro is somewhat rare within home gardens, most likely because of its size. It might also be a bit more demanding than other foliar perennials. It requires quite a bit of water at regular intervals. Also, it craves regular applications of fertilizer. However, it can burn if fertilizer is excessive. Soil should be loose, organically rich, and moist but not saturated.

Giant taro is also somewhat rare within nurseries. The big dormant bulbs are sometimes available with other summer bulbs during spring. Initially, they grow slowly, especially if weather is cool. Growth accelerates as weather warms. Some vigorous plants produce a few pups that are quite easy to divide as new plants. A variegated cultivar is notably rare. “Elephant ear” is another common name.

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Grape

Grapevines are productive and visually appealing.

Grape, Vitis spp., has been in cultivation for approximately eight thousand years! That is a very long time for many diverse varieties to develop. Most are cultivars of Vitis vinifera, but other species and hybrids are in cultivation also. Grapes are useful for juice, vinegar, wine, jelly, fresh eating and dried as raisins. Each application utilizes particular cultivars.

Grapevines are very vigorous. Without pruning, some can climb more than fifty feet high. Within home gardens, specialized dormant pruning limits most to less than ten feet high. On larger vines, fruit is awkward to reach. Vines climb with tendrils, but are conducive to redirection on trellises, fences or arbors. They are deciduous, so are bare through winter.

Grapes grow in clusters of all sizes, from only a few grapes to two hundred or more. Fruit can be green, yellow, orange, red, pink, purple, dark blue or black. Table grapes are the most familiar seedless type for fresh eating. Wine grapes are smaller and contain seeds. Established vines do not need much water. Excessive irrigation can compromise flavor. Bare root vines become available for winter.

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Crape Myrtle

Crepe myrtle has notably complaisant roots.

The popularity of crape myrtle, Lagerstroemia indica, is mostly justifiable. It is a compact tree, so is proportionate to small urban gardens. Its roots are very complaisant, so should not displace pavement. It blooms spectacularly for summer, and then develops fiery foliar color for autumn. Its only problem is that it is so popular that it has become too common.

The largest cultivars of crape myrtle do not grow much taller than twenty feet. Therefore, they are appropriate for utility easements with high voltage cables. Because of their very docile roots, they are popular as street trees. Although, they do not grow wide enough to provide much shade. Street trees should have single trunks. Others can have multiples.

Floral color is white, pink, red or mauve. Bloom can be very profuse and billowy. Autumn foliar color is bright yellow, orange and red before defoliation. The smooth bark is nicely mottled. Aggressive dormant pruning for winter delays bloom, but promotes bigger floral trusses. Crape myrtle enjoys warmth and full sun exposure. It does not need much water, once established.