Lagerstroemia indica

Flowers can be divided into broad sense and narrow sense. In a narrow sense, flowers refer to herbs with ornamental value. Such as impatiens, chrysanthemums, a bunch of safflower, cockscomb and so on. ; Flowers in a broad sense include herbs or woody ground cover plants, flowering shrubs, flowering trees and bonsai. Ground cover plants such as Ophiopogon japonicus, Sedum alfredii, etc.; Trees and shrubs, such as plum blossom, peach blossom, rose and camellia. In addition, the tall trees and shrubs distributed in the south have been moved to the cold areas in the north, and they can only be used as greenhouse potted plants, such as Prynne, Hevea brasiliensis, Palmae plants, and also included in flowers in a broad sense.

According to the classification of ecological habits, this classification method is based on the life style and ecological habits of flowers and plants, and is the most widely used. Open-field flowers are cultivated without protection under natural conditions. Open-field flowers can be divided into three categories according to their life history. Flowers and plants

1. Annual flowers. A plant that completes its life cycle during the growing season. That is, from sowing to flowering, fruiting and dying are all completed in one growing season. Generally, spring sowing, summer and autumn growth, flowering and fruiting, and then withering, so annual flowers are also called spring sowing flowers. Such as impatiens, cockscomb, zinnia, Scutellaria barbata, marigold and so on. 2. Biennial flowers. Flowers that complete their life cycle in two growing seasons. In those days, only vegetative organs grew, but after years, they blossomed, bore fruit and died. This kind of flower is usually sown in autumn and blooms in the following spring. Therefore, this kind of flower is often called autumn sowing flower. Such as colored carnations, violets, kale, chrysanthemums, etc. 3. Perennial flowers. Individuals who live for more than two years can blossom and bear fruit many times. According to the morphological changes of underground parts, they can be divided into two categories: (1) perennial flowers: the underground parts are normal in shape and do not metamorphose. Such as peony, Hosta, Hemerocallis, etc. ⑵ Bulb flower: The underground part is abnormal and hypertrophy. According to its abnormal morphology, it can be divided into the following five categories: 1. Bulbs and underground stems are fish-scale flakes. Bulbs covered with paper are called bulbs with balls, such as daffodils, tulips and Zhu Dinghong. Scales without shells are called skinless bulbs, such as lilies. ②: light bulb. The underground stem is spherical or oblate, with a leather skin outside. Such as gladiolus and vanilla. ③: Rootstock. Underground stems are root-shaped, with obvious nodes on them, and new buds grow at the top of branches, such as canna, lotus and water lily. ④: Tubers. Underground stems are irregular blocks or strips, such as calla lily, cyclamen, Erythrina grandiflora, tuberose, etc. ⑤: Root class. The underground taproot is thick, and the root system is born from the end of the taproot, such as Dahlia. 4. Aquatic flowers Flowers that grow in water or swamps, such as water lilies and lotus flowers. 5. Rock flowers refer to flowers with strong drought tolerance and suitable for cultivation in rock gardens. Often used in gardens. Generally, it is perennial or woody semi-shrub, and there are also some wet flowers such as ferns. Greenhouse flowers refer to flowers native to tropical, subtropical and southern warm areas. Cultivation in northern cold areas must be carried out in greenhouses, otherwise it needs to be protected in greenhouses in winter. Can be divided into the following categories: 1. Annual and biennial flowers. Such as Guayeju, calceolaria, sweet pea, etc. Perennial flowers. Such as Gerbera jamesonii and Clivia. 3. Bulb flowers. Such as cyclamen, Zhu Dinghong, Erythrina macrophylla, calla lily, cauliflower taro, etc. Orchids can be divided into (1) terrestrial orchids according to their ecological habits, such as orchids, orchids, orchids, orchids and spring swords. Flowers and plants

(2) Epiphytic orchids: such as Dendrobium, Vanilla, Paphiopedilum, etc. 5. succulent plants: refers to plants with developed water storage tissues in stems and leaves, which are stout, juicy and deformed. Including cactus, Sedum, Euphorbiaceae, Compositae, Bromeliaceae, Agavaceae and other plants. Ferns. According to different viewing methods, it can be divided into the following four categories: (1) landscaping ferns. Such as Cuiyuncao and Alsophila spinulosa. Among them, Alsophila spinulosa, also known as tree fern, is the largest fern, with a height exceeding 10 meter. It is an ancient group, an endangered species in China and a national first-class protected plant. In addition, Sophora japonica and Manjianghong are good materials for water surface greening. ⑵ potted foliage ferns. Such as lycopodium, black fern, Pteris vittata, Adiantum, etc. Among them, Lycopodium japonicum, Dryopteris nephrolepis and Pteris ferrugineus are important materials for matching leaves of cut flowers. (3) hanging ferns. Such as kidney fern, nest fern and so on. (4) Pteridophytes in rock bonsai. Such as Selaginella and fern. Among them, the small fern is the smallest fern, only a few centimeters in size. 7. Insectivorous plants. Such as Nepenthes, Nepenthes, etc. In some cut flower art, it is often used as an artistic flower arrangement material. ⒏ Plants of Pyraceae. Such as water hyacinth and pineapple. Pet-name ruby plants. Such as mallow, brown bamboo, pocket coconut and other foliage flowers. 10. Flowers and trees include poinsettia and deciduous trees. 1 1. Wang Lian, tropical water lilies and other aquatic flowers.

Garden use

According to the classification of garden use, 1. Flower beds refer to annual and biennial open-air flowers, which can be used to decorate flower beds. For example, pansies and carnations in full bloom in spring; In summer, impatiens and daisies are often planted in flower beds. Choose a bunch of safflower, marigold, September chrysanthemum, etc. Autumn; Kale can be properly arranged in flower beds in winter. 2. Potted flowers are potted flowers that decorate indoor and garden. Such as papaya begonia, hibiscus, asparagus, poinsettia, kumquat and so on. 3. Indoor flowers refer to a kind of flowers that undergo dark photosynthesis through C4 pathway. General foliage plants can be used as indoor ornamental flowers. Such as rich trees, brazilwood, hulk, green baskets, colored corn, etc. 4. Perennial roots of cut flowers (1): such as Paeonia lactiflora, Gerbera jamesonii, gypsophila paniculata, and strelitzia reginae. (2) Bulbs: lily, tulip, calla lily, vanilla, etc. ⑶ Woody cut flowers: such as peach blossom, plum blossom, peony, rose, rose, etc. Mr Lincoln, a classic representative variety of Chinese rose.

5. Leaf-watching flowers mainly look at the ornamental part. Such as Hulk, Cycas, ferns and so on. 6. Shading greenhouse flowers in garden design are flowers that grow under the shade of pavilions. Ophiopogon japonicus, safflower and fern can all be used as shade flowers. 7. Positive flowers A flower that needs enough sunshine to bloom is called a positive flower. Flowers in Xiyang are suitable for growing in full light and strong light. If the light is insufficient, it will grow poorly, bloom late or not, the color is not fresh, and the aroma is not strong. Active favorite flowers, such as (1) spring flowers: plum blossom, narcissus, winter jasmine, peach blossom, magnolia grandiflora, Qionghua, begonia, begonia papaya, begonia drooping branches, peony, clove, rose, rose, bauhinia, brocade, forsythia suspensa, yellow heart and cyclamen. (2) Summer and autumn flowers: Bai Yuhua, jasmine, Milan, Murraya murraya, woody cordate telosma, osmanthus fragrans, Magnolia grandiflora, hibiscus, Lagerstroemia indica, oleander, triangle flower, pineapple flower, snow flower, dahlia, colorful plum, canna, sunflower, hollyhock, hibiscus, frangipani, safflower. (3) Winter flowers: Chimonanthus praecox, poinsettia, silver willow, tea plum, freesia, etc. (4) Fruit trees: papaya in Mengshan, ginkgo, pomegranate, kumquat, orange, grape, loquat, jujube, persimmon, kiwi, fig, Keke, pyracantha, winter coral, etc. (5) Lianas: wisteria, lingxiao, wild rose, costustoot, honeysuckle, Parthenocissus tricuspidata, dill, etc. (6) Leaf-watching tree species: Pinus quinquefolius, Pinus sylvestris var. mongolica, Pinus sylvestris, Cedar, Sabina vulgaris, Willow, Tamarix chinensis, Acer truncatum, Buxus macrophylla, Rubber tree, Cycas, Dracaena draconis, Plantago, miscellaneous wood, yellow croaker, colored grass, etc. (7) succulents: cactus, triangle leaf, cactus, fairy mountain, gem flower, fluffy palm, etc.

Economic use

Classification by economic use 1. Peony, the king of medicinal flowers.

Such as peony, peony, platycodon grandiflorum, Petunia, Ophiopogon japonicus, Celosia cristata, Impatiens balsamina, Lily, Fritillaria, Dendrobium and so on are all important medicinal plants. In addition, honeysuckle, chrysanthemum and lotus are all common Chinese herbal medicines. 2. Fragrant flowers and fragrant flowers are widely used in food and light industry. For example, Osmanthus fragrans can be used as edible spice and wine-making, Jasmine and Prynne can be used to smoke tea, Chrysanthemum can be used to make high-end food and dishes, and Prynne, Rose, Narcissus and Chimonanthus praecox can be used to extract essence. Among them, rose oil extracted from roses is called "liquid gold" in the international market, and its value is more expensive than gold. Only one rose bud is worth 6 cents in the market. 3. Edible flowers are eaten directly with flowers' leaves or flowers. Such as lily, can be eaten as cut flowers; Chrysanthemum brain and day lily can be used as young crops and can be eaten. According to the origin of flowers.