动态第525页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年09月28日

Forget-Me-Not (Myosotis sylvatica) make excellent indoor container plants, requiring little care to maintain their gray-green foliage and clusters of tiny, light-blue flowers that appear throughout spring and early summer. The plants perform best in moist but well-drained soil. So a light, standard potting mix works well. Because Forget-Me-Not require plenty of air circulation, grow each plant individually in its own 12-inch/-30 cm-diameter container with bottom drainage holes. The plants are pest-resistant and even grow in nutrient-poor soil. So fertilizing them isn’t necessary. Forget-Me-Not is hardy in U.S. Department of Agriculture plant hardiness zones 3 through 8.[图片]Growing Conditions and General Care Place Forget-Me-Not in a south or east-facing window, where they receive full or partial sunlight. Water the soil deeply when its top 3 inches (7.5 cm) feels dry to your touch, watering until the water drips through the bottom of the pots. Don’t allow the plants to stand in water. Reduce watering to about once or twice each month in winter, while the plants are dormant. Resume normal watering in spring.[图片]Remove the plants’ spent, or old, flowers, at their stems, pinching them off with your fingernails. Throw away the removed flowers. Removing spent flowers encourages new blooms to form. Fertilize the Forget-Me-Not once each month only if their leaves appear wilted or yellow or the plants grow very slowly during spring or summer. Mix 1 teaspoon of 5-10-10, water-soluble fertilizer with 1 gallon of water, and use the mixture to fertilize the plants in place of one watering session, applying only the amount you normally would use to water the plants. Don’t fertilize during winter while the plants are dormant. Trim off all dead foliage and dead stems throughout the growing season as well as during winter after the plants die back. Use pruning shears or scissors for the task.[图片]Propagation If starting off Forget-Me-Not and other Myosotis plants indoors then start about 2 months in advance. The seeds of Forget-Me-Not should be sown in vermiculite. It will take from one to four weeks to germinate at 64 to 68 degrees Fahrenheit (18 to 20 degrees Celsius) in the dark. It is necessary to water the Forget-Me-Nots from below to stop them rotting. Once seedlings are ready transplant into the garden and grow about 6 to 8 inches (15 to 20 cm) apart.[图片]Pests and Diseases Insects and disease are not too common. If problems arise, treat early with insecticides or fungicides as appropriate.

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2017年09月28日

While often sold as a flowering perennial, Yarrow (Achillea millefolium) is actually an herb. Whether you decide to grow Yarrow in your flower beds or in your herb garden, it’s still a lovely addition to your yard.[图片]Yarrow has many uses as an herb. It is commonly used as a medicinal herb that can treat the bleeding of minor wounds, swollen or cramping muscles, reducing fever or to help with relaxing. As with any medicinal herb, it should not be taken without first consulting a physician. On the non-medicinal side, Yarrow is an astringent and makes a good facial wash or shampoo. Whether you grow Yarrow as a decorative plant or an herb, you can be sure that it will add beauty to your garden. Since Yarrow care is so easy, you have nothing to lose by giving this ancient herb a small place in one of your flower beds. [图片]Growing Conditions and General Care It is most often propagated by division, so chances are you’ll buy your Yarrow as a plant. Space your plants 12 to 24 inches (30 to 60 cm) apart if you’re planting more than one plant. You can also start your Yarrow from seed. Start seeds indoors about six to eight weeks before your last frost date. Sow the seeds in moist, normal potting soil. The seeds should just barely be covered by the potting soil. Place the pot with the seeds in a sunny and warm location. The seeds should germinate in 14 to 21 days, depending on the conditions. You can speed up the germination by covering the top of the pot with plastic wrap to keep in moisture and heat. Remove the plastic wrap once the seeds have sprouted. [图片]Regardless of whether your plants are grown from seed or bought as full plants, you will want to plant them in full sun. They thrive in a wide variety of soils but do best in well drained soil. Yarrows will even grow in very poor dry soils with low fertility soil. Some caution should be taken when growing Yarrow, as in the right conditions, it can become invasive and will then be in need of control. [图片]Once you have planted your Yarrow, it needs little care. It doesn’t need to be fertilized and only needs to be watered during times of severe drought. While Yarrow needs little care, it is susceptible to a few diseases and pests. Most commonly, plants will be affected by either botrytis mold or powdery mildew. These will both appear as a white powdery covering on the leaves. Both can be treated with a fungicide. Yarrows are also occasionally affected by spittlebugs.

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2017年09月28日

Growing Blanket Flowers (Gaillardia) are an interesting and colorful addition to the flower bed or garden, offering long lasting blooms if deadheaded, a necessary part of the care of Blanket Flowers. A member of the Daisy family, flowers are similar to those of the familiar Wildflower.[图片]Blanket Flowers are annual or perennial herbs or subshrubs, sometimes with rhizomes. The stem is usually branching and erect to a maximum height around 32 inches (80 cm). The leaves are alternately arranged. Some Gaillardias have only basal leaves. They vary in shape. They are glandular in most species. The inflorescence is a solitary flower head. The head can have 15 or more ray florets, while some Blanket Flowers lack any ray florets. They can be most any shade of yellow, orange, red, purplish, brown, white, or bicolored. They are sometimes rolled into a funnel shape. There are many tubular disc florets at the center of the head in a similar range of colors, and usually tipped with hairs. The fruit usually has a pappus of scales.[图片]Learning how to grow Blanket Flower is a fairly simple process. They are easily started from seeds or may be purchased as seedlings for a garden display of blooms in red and yellow colors of the traditional Indian blanket. Growing Conditions and General Care Sow seeds into a well-draining soil and cover slightly. Although drought tolerant once established, care of Blanket Flowers includes keeping the seeds moist until germination occurs. Once established, occasional watering should become a part of Blanket Flowers’ care. This assists in a longer display of the colorful blooms.[图片]Care of Gaillardias includes planting in a full sun location to keep this fast growing specimen happy. As a native plant to the central United States and Mexico, Blanket Flower is a heat loving flower that attracts butterflies. Growing Blanket Flowers are drought tolerant and do not like wet feet from soggy soil.[图片]Now that you are familiar with growing Blanket Flowers, you can add then to a bed or border for eye catching color. Growing Blanket Flowers can naturalize in a meadow or field adding hues of color. Easy care of Blanket Flowers makes them an ideal specimen for many landscape uses.

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2017年09月28日

In medieval Europe Stinging Nettle (Urtica dioica) was used as a diuretic (to rid the body of excess water) and to treat joint pain. Stinging Nettle has been used for hundreds of years to treat painful muscles and joints, eczema, arthritis, gout, and anemia. Today, many people use it to treat urinary problems during the early stages of an enlarged prostate, for urinary tract infections, for hay fever, or in compresses or creams for treating joint pain, sprains and strains, tendonitis, and insect bites.[图片]Stinging Nettle is an herbaceous, quick-growing plant whose leaves and stems are covered with tiny, hollow, silica-tipped hairs which can cause irritation. Can grow to a height of approximately 4 feet (1.2 m).[图片]Growing Conditions and General Care Stinging Nettles prefers rich soil with good moisture content and especially favors the edges of streams or nutrient-dense pastures. Stinging Nettle seeds are tiny, light dependant germinators that can be started indoors or out. However, select your location carefully as Nettles are very hardy and can spread quickly with the right conditions. Stinging Nettle can be assisted with stratification, but it is not necessary. To start, tamp the small seeds lightly into the soil or cover with a thin layer of soil (0.25 inch/6 mm). If starting indoors, sow in flats in late winter and transplant in early spring. Space plants approximately 8 inches (20 cm) apart. If direct sowing, seed in spring and thin as desired and plant rows 1 inch (2.5 cm) apart.[图片]It recommended to find a permanent spot with rich, moist conditions a little away from (or on the periphery of) your other herbs. Harvesting and Using Carefully collect spiny leaves before plant flowers in spring and early summer. Do not harvest when flowering. Be sure to wear gloves when collecting to avoid the ‘sting’ delivered by tiny hairs on the leaves and stem. Place on well-ventilated screen to dry.[图片]Stinging Nettles are full of nutrients. They are best used fresh for cooking and should be harvested just before you intend to use them. Cooking neutralizes the plant’s stinging ability. For making tea you can use fresh or dried leaves.

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2017年09月28日

Oenothera is a genus of about 145 species of herbaceous flowering plants native to the Americas. It is the type genus of the family Onagraceae. Common names include Evening Primrose, Suncups, and Sundrops. They are not closely related to the true Primroses (genus Primula).[图片]The species vary in size from small alpine plants up to 4 inches (10 cm) tall, to vigorous lowland species growing up to 10 feet (3 m). The leaves form a basal rosette at ground level and spiral up to the flowering stems. The blades are dentate or deeply lobed. The flowers of many species open in the evening, hence the name “Evening Primrose”. They may open in under a minute. Most species have yellow flowers, but some have white, purple, pink, or red. Most native desert species are white. One of the most distinctive features of the flower is the stigma, which has four branches in an X shape.[图片]Growing Conditions and General Care Oenothera plants can be propagated by dividing established clumps in the spring or in the fall. Softwood cuttings may be struck in late spring. Easy to grow Oenothera seeds can be sown directly in the garden in late summer, early fall, or planted early in the spring. Just cover the small seeds, and germinate at 65° to 70°F (18° to 21°C). Seeds require darkness to break dormancy. Space plants 5 to 9 inches (13 to 23 cm) apart. Plant in light, well drained soil with a pH of around 5.5 to 7.0. Sandy soil works well for this plant.[图片]Oenothera is tolerant of dry and is a good candidate for xeriscaping. In really fertile soil the foliage can be robust, but fewer flowers form. Top dress with fully composted manure in the spring. Provide irrigation during long hot spells, and cut the plants back by a third after flowering to keep them looking neat. Hot summer weather may cause the plants to briefly stop flowering. Powdery mildew sometimes appears in humid conditions.

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2017年09月28日

Calendula is a genus of about 15–20 species of annual and perennial herbaceous plants in the daisy family Asteraceae that are often known as Marigolds. They are native to southwestern Asia, western Europe, Macaronesia, and the Mediterranean.[图片]Calendulas have been used traditionally as culinary and medicinal herbs. The most commonly cultivated and used member of the genus is the Pot Marigold (Calendula officinalis). Popular herbal and cosmetic products named “Calendula” invariably derive from C. officinalis.[图片]The Calendula flower has long been a staple in British cottage gardens. When used in stews, broths and salads, petals of the flower add a spicy taste similar to saffron to many dishes. All parts of the plants are useful in many ways. The plant is said to stimulate the immune system and is currently used as an ingredient in many cosmetics. Flowers and leaves may be dried and stored for later use. In the vegetable garden, Calendula draws aphids away from valuable plants.[图片]Romans and Greeks used the golden Calendula in many rituals and ceremonies, sometimes wearing crowns or garlands made from the flowers. One of its nicknames is “Mary’s Gold,” referring to the flowers’ use in early Catholic events in some countries. Flowers are sacred flowers in India and have been used to decorate the statues of Hindu deities since early times. While uses of Calendula plants are diverse, growing it in the flower or herb garden is an optimum use of this attractive plant. Plants are frost tolerant and somewhat cold hardy and add long-lasting color and beauty in a flower bed or container.[图片]Growing Conditions and General Care The Calendula flower or flowering herb is an annual which will readily reseed. Too much care can result in stunted or slow growth of the plants. Poor to average, well draining soil and only occasional watering after plants are established is the secret to growing prolific Calendula plants. Like most herbs, Calendulas are adaptable and do not require a lot of maintenance. Roots will often adapt to the space provided. The amazing Pot Marigold can be grown in containers or beds in full sun to shade conditions. As the Calendulas prefer cool temperatures, flowers last longer in filtered sun or shady areas.[图片]If deadheaded regularly, this plant can bloom from spring through fall and beyond. In warmer areas, the Calendula may take a break from blooming during summer heat and then put on a show as temperatures fall in autumn. Regular pinching keeps the 1- to 3-foot (30 to 90 cm) plant bushy and prevents tall, spindly stalks.[图片]Now that you’ve learned how to grow Calendulas, take advantage of their long-lasting blooms in the herb garden or light shade area. Experiment with use of Calendula flower petals to replace saffron in recipes. If you are so inclined, use plant parts as a topical treatment for minor scrapes and cuts.

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2017年09月28日

Geum is a perennial plant that holds its own in almost any flower border. Its low, deep green foliage is a pleasing backdrop for the tall stalks of dangling flowers that come in warm red, orange and yellow tones.[图片]Also known as Avens, Geum grows in a small clump about 12 to 18 inches (30 to 45 cm) wide. While there are many wild species of Geum, gardeners typically grow the hybrid cultivars, which all have fluffy double blossoms, usually 1 to 2 inches (2.5 to 5 cm) in diameter, with many layers of petals. Geum flowers are held above the evergreen foliage on wiry stems, giving them a light, airy feeling. They flower profusely in spring and then sporadically throughout the summer. Geum is also known for its seed heads. After the flowers fade, the seeds develop inside a unique structure with feathery gray tails. With its elegant jewel-like flowers and attractive foliage, Geum is welcome in almost any garden bed or floral arrangement. It’s not a tough-as-nails plant, but with basic care and decent soil conditions it will thrive with little effort.[图片]Growing Conditions Geums flower best in a sunny position with average garden water. However, in really hot climates, afternoon shade is essential to keep the plants from being scorched. Good drainage is also important, as Geum is subject to root rot in wet conditions. Otherwise, they are very adaptable to different soil types. Garden Uses Geums are generally grown as a front of the border plant, where their low foliage and bright flowers make a cheerful edging to flower beds. Since it is a small plant, masses of one variety are very effective, though they can also be interspersed with other small-statured annuals and perennials for a cottage garden look. Geums are also excellent in potted arrangements and make great cut flowers.[图片]Cultivation and Care Geum is easily grown by seed sown indoors six to eight weeks before the average date of last frost. However, improved cultivars are readily available in garden centers, so most gardeners choose to start them as transplants. Plant them in good garden soil that has been enriched with compost. They are not considered drought-tolerant and will need weekly water throughout their life. It’s important to note that Geums are short-lived perennials that require division every few years to renew the patch. Otherwise, they will naturally decline and disappear.[图片]Bloom and Foliage Care The bloom period can be prolonged somewhat by deadheading. However, the foliage is evergreen in all but the coldest climates and can be allowed to remain through the winter. If the leaves are nipped by the cold, simply cut the plants to the ground – they will re-emerge in spring.[图片]Pests and Disease Few pests or diseases trouble Geum. Root rot, particularly in winter, can be a problem in wet soils. Powdery mildew can turn up in dry soil, especially late in the season. In all cases, diseased Geum plants are a sign of improper growing conditions or simply the age of the plants. But as a short term fix, it’s worthwhile to remove the infected foliage and allow fresh leaves to regrow.

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2017年09月28日

Plants in the Mint family (Lamiaceae) are very hardy perennials with vigorous growth habits. All types (including Sweet Mint, Spearmint, Peppermint, and Chocolate Mint) are fast-growing, spreading plants, so you must give them a place to spread without getting in the way, or plant them in a pot. Mint sends out runners that spread above and just below the ground, quickly forming large, lush green patches. In the right place it makes a pretty seasonal ground cover. You can also contain Mints in tight places such as between pavers of a walkway where your feet will brush against the leaves to release its fragrance.[图片]The spikes of white or pinkish flowers are attractive, but brief. However, they do attract bees, butterflies and even birds. Most Mints are hybrids and will not grow true from seed. Fresh leaves are a nice complement to lamb, fish, poultry, and vegetables such as peas, new potatoes, and carrots. Mint also blends well with green or fruit salads and beverages such as punch, lemonade, and tea. Two very well-known drinks, mint julep and Cuban Mojito, both depend on spearmint for their cool zest. Freeze Mint in cubes for iced tea. You can also preserve it in vinegar or dry it for potpourri or sachets.[图片]Growing Conditions Light: Mints will grow in full sun to partial shade. Temperature: Depends on variety. Peppermint is very cold hardy, down to Zone 3. Spearmint handles the heat best, up to Zone 11. Soil: Mint prefers a rich, moist soil with a slightly acidic pH between 6.5 and 7.0. Growing Tips Mint is one of the few culinary herbs that grows well in shady areas, although it can handle full sun if kept watered.[图片]Cuttings of Mint will root easily in soil or water and mature plants can be divided and transplanted. However you can start new plants from seed. Sow outdoors in late spring or start seed indoors about 8 to 10 weeks before the last frost. Keep soil moist until seed germinates. Mint prefers a rich, moist soil with a slightly acidic pH between 6.5 and 7.0. If the soil is somewhat lean, top dress yearly with organic matter and apply an organic fertilizer mid-season, after shearing.[图片]To contain the roots and limit spreading, you can grow Mint in containers, above or sunk into the ground. Be careful to keep container Mints from flopping over and touching the ground. Stems will root quickly, if given the chance. Harvesting Snip sprigs and leaves as needed. If you don’t harvest your Mint regularly, it will benefit greatly from a shearing mid-season. At some point, you will probably notice the stems getting longer and the leaves getting shorter. That’s the time to cut the plants back by 1/3 to 1/2 and get them sending out fresh new foliage again. You can do small patches at a time, if you have a lot of Mint, and prolong the harvest season. All cuttings can be used, dried or frozen for later use. You can use, dry or freeze the cuttings.[图片]Pests and Diseases Sometimes gets rust, which appears like small orange spots on the undersides of leaves. Use an organic fungicide and try to allow plants to dry between waterings. Stressed plants may also be bothered by whitefly, spider mites, aphids, mealybugs.

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2017年09月28日

Rudbeckia hirta, also known as Black Eyed Susan, is a versatile, heat and drought tolerant flowering plant that should be included in many landscapes. Black Eyed Susan plants grow all summer long, providing perky color and velvety foliage, requiring little care from the gardener.[图片]As with many wildflowers, growing Black Eyed Susan plants is simple and rewarding when blooms brighten the garden, natural area or meadow. A member of the Daisy Family, Black Eyed Susans go by other names, such as Gloriosa Daisy or Brown Eyed Susan. Black Eyed Susans may be annual, biennial or short-lived perennials. Heights of various Rudbeckia reach from a few inches to a few feet. Dwarf varieties are available. Whatever the landscape situation, most areas can benefit from the yellow petaled blooms with brown centers, which begin in late spring and last throughout the summer.[图片]Growing Conditions and General Care Black Eyed Susan plants are drought resistant, self-seeding and grow in a variety of soils. Growing Black Eyed Susans prefer a neutral soil pH and a full sun to light shade location. Black Eyed Susan care will often include deadheading the spent blooms of the flower. Deadheading encourages more blooms and a sturdier, more compact plant. It also can stop or slow the spread of the Black Eyed Susan flower, as seeds are contained in the blooms. Seeds may be allowed to dry on the stem for reseeding or collected and dried in other ways for replanting in other areas. Seeds do not necessarily grow to the same height as the parent from which they were collected.[图片]The Black Eyed Susan flower attracts butterflies, bees and other pollinators to the garden. Deer, rabbits and other wildlife may be drawn to Black Eyed Susans, which they consume or use for shelter. When planted in the garden, plant the Black Eyed Susan flower near Lavender, Rosemary or other repellent plants to keep wildlife at bay.[图片]Remember to use some of the flowers indoors as cut flowers, where they will last a week or longer.

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2017年09月28日

Heuchera also known as Alumroot or Coral Bells, is a genus of evergreen, herbaceous perennial plants in the family Saxifragaceae, all native to North America. There are 50 to 70 species of Heuchera. Many of the improved varieties available today are hybrids showcasing various foliage colorations and flowering characteristics.[图片]With its colorful foliage, Coral Bells are the perfect perennials to brighten up any garden throughout the entire growing season. Coral Bell forms attractive basal mounds with heart-shaped, rounded, or triangular leaves which can be smooth wavy, or ruffled. The leaf coloration varies by cultivar, but mainly includes various hues of amber, bronze-green, green, gold, pink, purple, deep purple and silver veined. In many instances, the coloration of the leaves varies with their environment and often changes with the seasons. In most locations, they are considered evergreen as the foliage lasts throughout the year. They produce clusters of cream to red colored coral bell shaped flowers on tall wiry stems that rise above the basal foliage in the late spring. Depending on the cultivar, they bloom from a few weeks or throughout the entire season.[图片]Coral Bells are commonly used as accent or specimen plants, in woodland gardens or rock gardens, and as groundcovers or mass plantings. They are commonly used in patio pots or as components in mixed containers. The flower panicles make fine additions to cut flower arrangements. Coral Bells attracts butterflies and hummingbirds into the garden. They are also deer resistant.[图片]Growing Conditions Coral Bells prefer to be planted in locations with a fertile, moist, well-drained soil. They particularly do not perform well in locations with poor drainage during the winter months. Most Heuchera cultivars will grow more vigorously and have the best leaf coloration when they are planted in locations with partial shade, particularly in the afternoon. Purple leafed cultivars can tolerate more direct sun; in general the darker the purple coloration the more exposure to sun they can tolerate. Conversely, the amber and gold leafed cultivars are less sun tolerant; the more yellow the leaf coloration, the less tolerant to sun they are. In locations with full sun or full shade, most cultivars will usually survive, but they will be smaller and not look as lively.[图片]Coral Bells are generally hardy throughout Zones 4 to 9. However, several cultivars are hardy to Zone 3 and a few of them can tolerate the heat and humidity of Zone 11. General Care Generally considered easy to grow and require little routine maintenance. To encourage continuous flowering or repeat bloom, deadhead the spent flower spikes as needed. Mulching during the summer months will help keep the soil moist and prevent injury to the shallow root system from heat. Coral Bells can be divided every 3 to 4 years if they lose vigor or when the crown gets too large.[图片]Pests and Diseases Generally, Coral Bells can be grown without any insect or disease problems. Bacterial and fungal leaf spots, Botrytis, Japanese beetles, powdery mildew, and strawberry root weevils may occasionally, but not usually, become problematic. Some cultivars may get leaf scorch when they are planted in hot, full sun. Overly wet conditions during the winter months can lead to some plants rotting out. Where climates fluctuate, frost heaving (where the plants push themselves up out of the ground) can be a concern; mulching before winter may help prevent this problem.

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