Individual Plants

About specific plants

The popular Hibiscus (Hibiscus syriacus and Hibiscus rosa sinensis)

Pin It
The Hibiscus is one of the more popular tropical or tropical-looking garden plants because of its colorful, showy flowers. There are many species of Hibiscus but the two most sought-after garden plants are the Hibiscus syriacus (the garden hibiscus, Rose of Sharon or Rose of Althea) and Hibiscus rosa sinensis (the Chinese hibiscus). These garden plants are part of the Mallow family that includes such familiar members as okra, cotton and the hollyhock. One more Hibiscus, Hibiscus sabdariffa is used for food, jams and as an herbal tea in parts of the Caribbean.

The Hibiscus syriacus (Rose of Sharon, Rose of Althea) is a species that can grow in cooler temperatures. It blooms prolifically in reds, whites, pinks and purples sometimes with blended colors. The flowers are edible and decorate shrubs or small trees that usually grow six to ten feet tall. It thrives in much of the eastern part of the United States – so much that it is becoming invasive in the state of Connecticut – and can be grown successfully in most gardens across the country. The Rose of Sharon will tolerate full sun or part shade and soil that ranges from slightly dry to a bit on the moist side.

Hibiscus rosa-sinensis (Chinese hibiscus) is a tropical plant that is not frost tolerant. The original species is red-flowered and is the national flower of Malaysia. This species is native of the Pacific Islands and Asia and has been cross-bred with the local species that has become the state flower of Hawaii; Hibiscus brackenridgei. The resulting hybrids offer a vast array of plants that produce flowers from a couple of inches to almost a foot in diameter and shrubs that grow from two feet to fifteen feet tall. Hybrid Chinese hibiscus are available with remarkable self (one-color) and blended colors in both single and double forms. (These are also edible flowers.)

Give these plants full sun for four to six hours a day and feed them lightly and frequently with a low phosphate fertilizer. Regularly inspect the plants for sucking insects like whitefly, aphids, and mealybug. Prune plants for shape when young.

If you live in a cool climate grow your Hibiscus in a large pot. Bring it outdoors to enjoy the warm months of the year. Whether they grow in the ground or in a container, you will encourage more blossoms if you keep spent flowers removed. Each flower lasts only a day.

The Tropicana Canna

In the last few years this relatively new Canna lily has cropped up in nurseries everywhere. It is one of the most colorful foliage plants you will find anywhere, yet it grows in many areas where your more delicate, showy plants wouldn’t have a chance. The Tropicana Canna is drought tolerant yet handles so much moisture that it can be grown as a bog plant in a pond. Although it supposed to take only full sun, it will accept some shade, too. The large leaves unfurl in bronze, ruby red, pale yellow and slightly green-etched stripes. The “Tropicana” Canna is not as delicate as its name implies. It is hardy to 20′F (sometimes lower), dying down to its tubers (long swollen roots somewhat like narrow sweet potatoes) in the wintertime only to reappear in the early spring. Leaves will be burnt back at the first frosts.  Tough colorful leaves tolerate heavy winds so long as they have a wall reasonably nearby. They grow from 2 ½ ‘(dwarf varieties) to 6’ tall. Use this flamboyant plant wherever you want a splash of bold color to accent the ordinary green of most gardens, especially when out of flower. The leaves give a tropical feel to any design and the size and stature make a sculptural statement wherever placed. As if the showy leaves weren’t enough, “Tropicana” Canna crowns itself with a bouquet of brilliant orange flowers that should be removed when they wilt to make room for new flowers and more leaves. This plant is worth every penny you spend on it. And it will cost a few cents more than most other cannas since the variety is still under patent.

How to grow the Yesterday Today and Tomorrow plant

The Yesterday, Today and Tomorrow is the common name for an ornamental shrub with the Latin name of Brusfelsia  pauciflora. It will thrive in a warm sunny climate where it will survive only light frost. 

It is a handsome bush with glossy leaves that grows to about three feet tall. New growth can be long and slender and can look almost vine-like.  It likes a rich soil, but is tolerant of a wide range soils. The Yesterday, Today and Tomorrow plant blooms best in part shade to full sun with regular water and good drainage. In hot sun areas it will appreciate a little shade.

The plant gets its name from its changing flower colors that were deep purple ‘yesterday’, lavender ‘today’ and finish white ‘tomorrow’. One to two inch, open-faced flowers can smother this evergreen shrub during its long blooming period with three different colored blooms all at once.

The Yesterday Today and Tomorrow bush is not difficult to grow in a mild climate and blends in well with other plants. Use it in a cool-colored garden with blues, purples, pinks and whites, or design it into the landscape to contrast with bright colors. It also blends comfortably with pastel shades. Because the Brusfelsia will naturally grow with a slightly rangy habit, it looks best trimmed lightly. For a more formal appearance, it will accept harsher, formal shearing, but you are likely to remove the best attributes of the plant – those multiple colored flowers – if you insist on cutting it back too heavily. There are plainer shrubs that would probably be a better choice for severe shaping. Instead, use the Brunsfelsia pauciflora where it can show off its unique beauty in a natural-looking border, as a backdrop for other flowers, or as a stand-alone focal point. The Yesterday, Today and Tomorrow plant is also a fine choice to grow as a specimen shrub in a pot.

California native annual flower: Five Spot Nemophila

This little gem is a wildflower that will grow like crazy after the rains in an area that gets at least a little dappled shade. If you want a low growing flower for under native oaks or near a shaded rocky outcropping, this one is a charmer. The purple spots on each petal give it its name and as the flower ages, it forms an intricate pattern of purple stripes and dots on inside of the white petals. Although this is only an annual, if it is happy it will re-seed each year forming a whole colony of color. The plant is native to California and needs no special care. It will grow between 6″ and 10″ and will extend its blooming season a little with some light watering. If you can find them, they should be planted at this time of the year. Otherwise, plan on planting seed heavily at the end of next autumn or in the winter. Once it gets baking hot, the flowers will bloom on and off, but it will be too late (or early) for planting. These are related to another Nemophila, “Baby Blue Eyes”. The latter is often seen in shady places when you take hillside walks. “Baby Blue Eyes” have slightly smaller china blue open cup shaped flowers and have the same cultural needs as the Five Spots. Both make perfect California native wildflowers for the garden or for open areas.

Bladderpod (Isomeris arborea)

The Bladderpod or Isomeris arborea is a colorful shrub that grows to about four feet tall and is smothered with showy, bright yellow flowers at the start of the wildflower season. It is attractive in the garden as well, but needs excellent drainage and rather poor soil. This is one of the first of the Southern California wildflowers to burst into bloom at the beginning of the wildflower season. When it is done blooming it sports curious inflated, papery sacks that hold the seeds.  If you shake the pods you can hear the seeds rattle around inside.  It is said you can eat the seed much like capers. These plants love the burning heat of the chaparral and the desert, but will also bask in the salt sprays of the ocean so long as their roots don’t get too much water.

Here’s a little video I puffed out after scaling a steep bluff in search of one of the first blooming plants at the end of this winter. Pardon the fact I am a bit short of breath. It was a big climb!

The Palo Verde: a perfect tree you can grow in a desert climate

I am joining garden bloggers across the country to write a “You can grow that” article on the forth of each month. This is the brainchild of garden maven C.L.Fornari  to inspire people to grow beautiful gardens in harmony with their local environments. Although I have gardened in many areas, my current focus is on the desert and chaparral — a challenging but fragile ecology for gardening. My first “You can grow that” article centers around the Palo Verde. Planting the right tree in the right place is an excellent way to start building a successful, harmonious garden.

There are hot, dry-summer climates in more locations than just the official desert. People who live in these climates may think gardening is a challenge. It’s true many of the traditional garden plants used across the country will not survive hungry soils and hot sun, but the desert climate does offer some gems that gardens in other areas cannot grow. The Palo Verde is one of those gems.

The Palo Verde is a name given to both the Cercidium and the Parkinsonia. These are desert trees that love hot sun and dry, lean soils. They can take wide temperature ranges and enjoy winter rains. Losing their foliage in the winter, they leaf out with fine-cut leaves that look like billowing green clouds and bloom with big clusters (panicles) of showy yellow flowers, looking a bit like large sprays of orchids.

The Mexican Palo Verde or Cercidium aculeata is frost tolerant to around the low 20′sF and grows well on poor soils with little to medium water needs. The Parkinsonia floridum or Blue Palo Verde is more cold tolerant. If established, it can handle temperatures down to the mid teens. It grows between 25 – 30′ tall and likes a little more water than the Foothill Palo Verde.  And the Foothill Palo Verde, Cercidium microphyllum is a very slow grower with tiny leaves. This third Palo Verde is likely to reach only 10-12′ tall. It is more difficult to find in nurseries and garden centers. It will tolerate temperatures down into the high teens. The flower sports a lighter petal color in the flower than the previous two.  All Palo Verdes are considered desert trees and will take hot, dry summers in their stride.

The Palo Verde is a striking tree that makes a perfect small shade tree.  Trees and/or branches are colored green and create an unusual color and textural effect to a cactus, succulent, drought-tolerant or artistic garden.  The fluffy foliage creates a soft backdrop for any design and the green wood is unique looking during dormancy.  The flowers of the Parkinsonia and Cercidium can rival the dramatic shows put on by tropical flowering plants. 

Give the Palo Verde excellent drainage and plant it in full sun.  It handles strong winds and extreme heat.  These are great small trees for a decorative statement in the dry garden.

Design with lilacs in the garden

Because of their showy, scented flowers, lilacs are popular shrubs to grow in the landscape. In cold climates these shrubs can grow to the size of a small tree. They usually grow with multiple stems in a form that looks like a large shrub. Some lilacs can grow on a single thick stem that makes them look more like a tree. Lilacs (Syringa)  have been a favorite for decades and are ideal for a romantic, woodland, English or old-fashioned style garden or can be integrated into many other beautiful garden themes. Many varieties offer good cut flowers that will provide a decorative indoor bouquet that will fill your home with a delightful perfume.

The most frequently grown lilac is the Syringa vulgaris. This lilac comes in purples, blues and whites. There is a group of plants developed especially for warmer climates known as the Descanso hybrids. These come in an assortment of colors including pink. Most tend to grow to only about six feet tall. These are more likely to bloom well in the south and the west of the country despite the lack of cold winter temperatures.

Grow lilacs for beauty where they can soften angles by filling corners with soft foliage. Use a lilac for a focal point or to drape over fences and arbors. The lilac will also make a fresh green backdrop in the back of a large flower border. Plan on the lilac losing leaves in the winter showing the branch framework until it leafs out in the early spring. The flowering period is relatively short but leaves form a good fill with handsome foliage. Plant them neat seating areas or by windows and entryways where the fragrance of flowering lilacs can be appreciated.

Give lilacs a rich soil and good drainage. They need full sun and room to grow. Lilacs don’t suffer from a lot of diseases and pests and are best trimmed to control size and shape. Easy to cultivate, grow lilacs for their beauty and scent, they are a welcome addition for most any garden.

New introductions: ‘Kong’ Coleus plants

Check out the new introduction of Kong coleus plants displayed this year at the California Spring Trials. Bred by Ball Growers, this new coleus plant sports huge leaves painted in bright colored designs. The display for the Spring Trials featured many different varieties of coleus plants. Some of the smaller plants are sun-tolerant even where temperatures get hot in the summer. The larger leafed varieties like the newly introduced coleus ‘Kong’ needs shade.  Although most coleus plants grow as annuals, some odd plants can over-winter and live for more than one season where conditions are mild.  The flowers of the coleus are attractive spires of purple, but the leaves are usually so showy that they overwhelm the flowers.

Pomegranates offer garden and health benefits

I was just thinking about the pomegranate. It’s such a versatile plant. After planting a row of dwarf pomegranates (Punica  granatum nana) as a natural low hedge in a design, I had the opportunity to design the larger variety into a space where it worked as a colorful screen. The bright orange-red flowers are as decorative as any ornamental blooming shrub and the fruit hangs off the tree like jolly red Christmas ornaments — unless you pick them to eat or extract the juice instead.

The pomegranate is a venerable fruit that dates back to biblical times when it was honored in ancient artwork and included in many tales and parables. Popularity today has been boosted by recent research that recommends it as a natural preventative of the free radical cells that can be a precursor to cancer.  Some believe it is a helpful aid for weight control. It is also an excellent source of vitamin C, niacin and fiber. Other curious facts about the pomegranate is that it is recorded as having 365 seeds — just like the number of days in a year. Another myth is that they have 614 seeds like one ancient calendar. I haven’t had the patience to count them to find out.

Pomegranates are easy to grow, like full sun and are more drought-tolerant than many other fruit trees. They thrive in rich and poor soil. The flowers are so showy that there are decorative cultivars bred to show off pink, coral or white flowers with flouncy layers like petticoats. These ornamental varieties don’t even bother much with fruiting. You can let the full-sized Punica granatum ramble or sprawl.  Or you can clip it into a neat, small tree. The Pomegranate will even tolerate pruning it into a simple, formal topiary.

So, if you are thinking about an interesting fruit to grow, consider the Pomegranate. Small varieties will do fine in limited garden space or even in containers on a patio or balcony. Big Pomegranates will produce lots of fruit and serve as trees, living walls or fill in awkward spaces. Oh, and just for a bonus, the Pomegranate will turn a brilliant yellow at the end of the season before going into winter dormancy, just to add some seasonal color to your garden. What more could you ask of a fruit tree?

Plant profiles: Rosemary ‘Ken Taylor’

There are many different varieties of rosemary you can grow in your garden. There are shrubs that grow from trailing groundcovers to sprawling four foot tall bushes. Some flower in blues, some lavender, some in pink, and some in shaded whites. All are herbs that have the unique rosemary scent and essential oils that can be used in cooking or for medicinal purposes. One of my favorite rosemary plants is the ‘Ken Taylor’. This is a cultivar that grows about two feet tall and stays reasonably neat looking – more than most other varieties. It blooms in early spring with brilliant sky blue flowers unlike the usual dull, pale flowers.

A well-behaviored plant, the Rosmarinus ‘Ken Taylor’ loves full sun in lean, well-drained soil, the same as other rosemary plants. It will handle light frosts and high heat. It also does well in dry air where so many other plants fail to grow.

Grow rosemary in informal or formal garden designs. It will tolerate pruning and looks fine when allowed to determine its own shape. The bright blue color is startling when the plant is in flower so design it where it can strut its stuff in spring. You can even grow a garden of mixed rosemary plants in different growth habits and flower colors. These plants will stay handsomely evergreen and make a good foil for other flowering plants. They also look fine on hills or slopes where they can decoratively help stop erosion.

 


Amazon Carousel Widget

Search Our Site

Feel free to search for articles on gardening, plants, news, landscape design, sustainable and eco-friendly products and tips, construction ideas, horticulture, garden events and more.

Garden/Landscape Articles