Flowering Plants

The earth laughs in flowers.”
…  Ralph Waldo Emerson

Flowering Plants – A History

Flowering Plants - Mixed BouquetFlowering plants (Angiosperms) are seed-bearing vascular plants—the largest grouping within the plant kingdom in terms of the number of described species—about 352,000 species or 90% of all known species of plants; also the most varied group of land plants. Found in almost all habitats, the reproductive structures are flowers with the ovules enclosed in an ovary. Angiosperms have a large number and variety of life forms; the largest plant families being Orchids, Compositae (daisies) and Legumes (beans). There are various theories of flower evolution as described in Wikipedia. The first flowering plants (also referred to as fruiting plants) known to exist are from well over a million years ago; they became widespread about 120 million years ago, replacing conifers (plants that bear cones) approximately 60-100 million years ago. Many beautiful flowering plants are also very poisonous plants, so be cautious when selecting them for your home or yard if you have pets or children.

The orchid has 21, 950 species; the daisy has 22,750 species and the legumes have 19, 400 species.

Flowering Plants and Reproduction

The main feature of angiosperms is the flower, whose function is to ensure fertilization of the ovule as well as the development of fruit that has seeds. Flowers enable a wider range of adaptability for the species. The flowering plants have stamens with two pairs of pollen sacs, which have become modified over the centuries in order to prevent self-fertilization. The male parts are reduced to three cells. Fertilization begins quickly after pollination, allowing the species to produce seeds early. After the ovary has been fertilized, the carpel and surrounding tissue develop into a fruit, which attracts seed-dispersing animals thus helping the plant to spread and adapt to other areas.

Flowering Plants - Lavender PansiesThe flowering plants have reduced female gametophyte – 7 cells, 8 nuclei, possibly an adaptation for more rapid seed set. Endosperm is a nutritious tissue that provides food for the embryo, the cotyledons and more rarely the tiny seedling. These specific traits together have made flowering plants the most commercially viable group of plants to our existence. Some plants (like Spider Plants, many Succulent Plants and Palm Plants) are valued for their foliage, but still produce flowers for reproduction or when the plant is stressed.

Popular Flowering Plants

Modern flowering plants are used to brighten our homes, clean the air, increase humidity, improve our health and sharpen our attentiveness.

Examples include:

Hibiscus

Flowering Plants - HibiscusThe Hibiscus are beautiful tropical plants that create an exotic atmosphere with their huge blooms that last for only a short time; however, similar to Gardenias, the plant will bloom from spring through autumn. Keep the soil moist and give it lots of sunlight. The flowering plants can be trained to grow into trees.

Roses

Roses are one of the oldest flowers known to humans and are still one of the most-loved for their beauty and scent—honored also in medicine, art, literature, romance and ballads.  Roses do best in full sunlight, well-drained soil and lots of organic matter. In 1986 the rose became America’s national flower.

Cyclamen

Cyclamen is a popular plant for both indoor and outdoor growth. It is in the list of Best Indoor Plants for Beginners, and is hardy and easy to grow.

Hydrangea

Flowering Plants - HydrangeaSome Hydrangea plants are flowering plants native to Asia and the Americas. The most diverse plants are in China, Korea and Japan – some are shrubs, some small trees and some are lianas that climb up taller trees as high as 98 feet (30m).

Flowering Plants - Pink Hydrangea

The Hydrangea can also be grown in your garden or indoors. It will bloom from spring until autumn. Some species of the Hydrangea have 2 types of flowers s—mophead (large, round flowerheads) and lacecap (round, flat flowerheads). Most species of Hydrangea have white flowers but the color is affected by the level of soil acidity – an acid soil will normally produce a bluish flower; an alkaline soil will produce a pink Hydrangea bloom. The Hydrangeas can be deciduous or evergreen; the commonly seen plants here in the US are normally deciduous

Orchids

In 1922 a physiologist discovered how to germinate Orchid seeds, leading to mass production. Orchid breeders have now created in excess of 100,000 hybrid orchids. Some varieties of Orchids are not hard to grow. The plants do not grow in soil but in a chunky-textured medium such as moss, bark, charcoal and other ingredients mixed in. The roots must have exposure to air otherwise the plant will die! Mist the leaves lightly; after the flower stem dies the Orchid will go into a resting mode. It isn’t dead—don’t throw it out! The Phalaenopsis Orchid is a good plant to begin with. We have a Basic Orchid Care page on this website, but, for questions that we don’t address, there is an orchid care forum at: http://www.justaddiceorchids.com/frequently-asked-questions.

Peonies

Flowering Plants - PeoniesThe horticulture of Peonies is native to Western North America, Asia and Southern Europe. The number of species of this perennial is approximately 35-40 and boundaries between the species are not clear. The flowers are beautifully fragrant and appearing in colors of red, white, pink or yellow. The leaves are actually many leaflets with deeply indented margins and a single stem. Garden peonies start from tubers, while tree Peonies are grown from seed or from a graft.

Peonies are robust plants that take little care and can handle severe cold. They need a full day of sunlight unless you live where there is intense heat—in which case the plants may want partial shade. Peonies are often used in landscaping or planted just in a row. Do not overcrowd them—since that reduces air flow, and make sure the soil is well-drained or disease and rot could result. The plants have beautiful bright green foliage up to 3 feet high. Peonies can be grown in many zones if you prepare the soil properly, and once established in a garden they bloom regularly in the spring. If Peonies are growing where they have the correct balance of space, water, drainage, sunlight and air they may possibly bloom for a century with minimal care.

African Violets

African Violets are popular houseplants and are easy to grow when you keep in mind basic plant health care. They produce beautiful flowers and have velvety leaves. These plants can be gorgeous when displayed on suitable indoor plant stands.

Chrysanthemum

Flowering Plants - CrysanthemumThe Chrysanthemum flowers come in a wide variety of shapes, colors and sizes. Each Chrysanthemum flower is a cluster of several flowers—short disk flowers and rings of longer ray flowers; there are 9 categories depending on the type and arrangement of disk and ray flowers. This plant is not specific to any season; can be grown in most types of soil; needs sunny weather; they are easy to grow and flower for months.

Azalea

Plant an Azalea in loose, well-drained soil with good organic matter during the early spring or early autumn. Azalea roots are shallow; pH needs to be kept at about 4.5-5.5; soak the plant while in the pot prior to planting it in the garden. Flowering Plants - AzaleaPlant the azalea higher than the surrounding soil; they usually settle some—then water the area and add a layer of compost: pine needles, bark that has been shredded up or just pine bark. A mulch helps to keep the area damp and cool and deters weeds. If the weather is dry water the azalea weekly.

Sources and Citations

http://en.wikipedia.org/wiki/Flowering_plant – research source

http://www.bhg.com/gardening/houseplants/flowering/blooming-houseplants/#page=2 – research source

http://www.colonialdistrictroses.org/sitebuildercontent/sitebuilderfiles/abriefhistoryoftherose.pdf – research source

http://en.wikipedia.org/wiki/Hydrangea – research source

http://en.wikipedia.org/wiki/Hydrangea – research source

http://www.theflowerexpert.com/content/mostpopularflowers/morepopularflowers/peonies – research source

http://www.gardeners.com/Peony-Care/8106,default,pg.html – research source

http://www.theflowerexpert.com/content/aboutflowers/tropicalflowers/chrysanthemum – research source

http://www.usna.usda.gov/Gardens/faqs/azaleafaq2.html – research source

 

Popular Tropical Plants

The term “Tropical Plants” refers to plants raised in an area that is always warm. Your local nursery will carry some tropical plants for growing indoors or you can buy them at Amazon.com. Some of the common ones attempted by home horticulture include:

Tropical Plants - Bamboo

Figure 1: True Bamboo

Some true Bamboo plants will survive under household conditions but will require extra care; the plant prefers to be outdoors. Bamboo needs a lot of light and may need to be placed outside periodically to maintain the best health. Many indoor plant stands can be used outdoors, and have wheels to make transporting large plants easier. For the best plant health care, be careful to not over-water Bamboo. If grown in a nursery, an atrium, or greenhouse with high humidity you will likely have a healthy Bamboo plant!

Note: Lucky Bamboo, found even in grocery stores, is not a true bamboo but a member of the lily family from the tropical rain forests of Southeast Asia and Africa. It is one of the Best Indoor Plants for Beginners because it is very easy to care for. Do not use tap water on this plant unless the water has sat out for 24 hours; change the water weekly. This common plant prefers indirect sunlight and a temperature between 65-70 degrees. Give it an occasional feeding of a mild solution.

Tropical Plants - Hibiscus

Figure 2: Hibiscus

Hibiscus is also a native tropical plant. Heat is the most important factor for this plant during the winter. Considered outdoor flowering plants in parts of North America, they must be moved indoors from the yard or garden for the colder months. The Hibiscus is grown as an indoor plant in parts of Europe, Canada and colder areas of the US. Hibiscus cleans the air and releases oxygen back into it.

Tropical Plants – Yucca

Yucca is a tough perennial shrub consisting of 40-50 species, that is flexible and low maintenance. Yucca are also among the best (indoor or garden) air cleaning plants. They are native to hot, dry areas of the Caribbean, North-, South-, and Central America. Prized as an ornamental garden plant, some of the Yuccas have edible parts: seeds, fruit, flowers, stems and some Yucca, even the roots. Be cautious though, because some Yuccas are highly poisonous plants. If you don’t know what the plant is, make sure you call your local poison control center if a person or pet ingests a Yucca.

Although you can plant it in flower pots, the Yucca does better in a raised garden bed where it will get full sun. See the wikiHow link for propagation instructions.

Tropical Plants – Cactus

Tropical Plants - Cactus Garden

Figure 3: Cactus Garden

Cactus has been part of our diet for about 9,000 years; 2,500 species are known. The plant has diverse uses such as food, drink, sealant, caulking, toy manufacturing and dye for the cosmetic industry. The Cactus is also a common house plant and found not only at the nursery but even in grocery and drugstores. Perennial Cacti are stem succulent plants and can last through severe drought by storing water in their stems, leaves and roots. They require many hours of sunlight on a daily basis and well-drained soil.

Tropical Plants – Palm Plants

Palm Plants are tropical plants that come in a wide variety of shapes and sizes. Some produce flowers and fruit while others are prized for their foliage. Some are so big that they can only be grown outdoors or in very large buildings, while others make wonderful little houseplants. Like Spider Plants and Cyclamen, many varieties of Palm Plants come from Africa and other tropical climates.

Tropical Plants – Orchids

Phalaenopsis and Paphiopedilum are 2 species of Orchids native to the tropics, and enjoy daytime temperatures of 73° – 85°F, with humidity at approximately 85%. They prefer an East/Southeast facing window where they can get at least 6 hours of sunlight every day. Some people simplify their Orchid care by keeping them in the window above a shower because these species love the warmth and high humidity.

Tropical Plants - Zonal Geraniums, Appleblossom

Figure 4: Zonal Geranium

The Zonal Geranium was initially discovered in South Africa, but grows well in any tropical climate globally. This is an easy plant to grow indoors, and given enough light, will bloom continuously in dazzling shades of white, pink, red, fuchsia, salmon and light purple. The flowers grow in clumps similar to Hydrangea. These plants are commonly grown in flower pots. From personal experience I would say that geranium plants will not grow from a leaf, as some recommend, but rather from a cutting of 2-3 joints; just plant it above the first joint, water it thoroughly and allow the plant to dry out before re-watering. Some geraniums are also now grown from hybrid seeds—planted in small plugs; they often are a better plant/bloom than the geranium grown from a cutting.

Tropical Plants – Gardenia

The perennial evergreen shrub, Gardenia, is from a line of 142 species of flowering tropical plants belonging to the coffee family. The gardenia is normally grown outside; some will become small trees reaching 15 m (49.2 feet).  They are native to areas of Africa, Southern Asia, Australasia, and Oceania. The leaves of this plant have a strong texture; the flowers are singles or in small clusters of white or a soft yellow. Much like Roses and Peonies, the fragrance of the gardenia is beautiful and you may enjoy it for weeks as it blossoms from mid-spring until mid-summer—IF—you learn the basics of this tricky plant’s growing conditions and regular

Flowering Plants - Gardenia

Figure 5: Potted Gardenia

The Gardenia flower is a common choice for a beautiful corsage—vying with Roses and Orchids; it is one of the most fragrant flowers for the garden or indoors. Many gardenias are classified as an endangered species such as the Hawaiian Gardenia; there are only about a dozen of the very fragrant small trees remaining. Gardenias are a rather high maintenance plant that you don’t often see in flower pots—needing specific soil acidity, lots of water and sun, cool temperatures with high humidity; pests love them—especially whiteflies, scales, spider mites and aphids.

Tropical Plants – Horticulture

Horticulture is the science, technology, and business of plant cultivation for  the advantage of mankind; working at home in your own garden or potting plants for indoors is an example of horticulture at its basic level whether it’s tropical plants, garden vegetables or a leaf from your Mother’s favorite African Violet!

Sources and Citations

http://plantcaretoday.com/how-to-care-for-a-yucca-plant.html

http://www.wikihow.com/Grow-Yucca

http://www.dunecraft.com/resources/history_of_cacti.htm

http://www.wikihow.com/Grow-Cactus-Indoors

http://en.wikipedia.org/wiki/Yucca#Uses

http://www.bamboogarden.com/Interior%20Bamboo.htm

http://www.chiff.com/a/lucky-bamboo.htm – research source

http://www.ask.com/explore/different-colors-geranium-flowers – research source

http://www.extension.umn.edu/distribution/horticulture/dg1118.html – research source

http://gardening.about.com/od/plantprofiles/p/Growing-And-Caring-For-Zonal-Geraniums-Pelargonium-X-Hortorum.htm – research source

http://www.fws.gov/pacificislands/flora/higardenia.html – research source

http://www.wikihow.com/Care-for-Gardenias – research wource

http://homeguides.sfgate.com/rid-mealy-bugs-gardenia-houseplant-44955.html – research source