动态第935页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年08月20日

Schefflera is popular as a houseplant and is usually grown for its attractive foliage. Most people in temperate regions have never seen a schefflera blooming, and it would be easy to assume that the plant doesn’t produce flowers. Flowering schefflera plants may be unusual, but these plants do bloom once in a while, even when they’re grown indoors year round.[图片]When Does Schefflera Bloom? Schefflera plants, which are commonly known as umbrella trees, are tropical. In the wild, they grow in tropical rainforests or in various parts of Australia and China, depending on the species. They certainly produce flowers in their native habitats, but you may be wondering: does schefflera bloom in cooler regions?[图片]Schefflera plants are less likely to flower in temperate regions, but they do produce flowers occasionally, especially in warmer locations like Florida and Southern California. In gardening zones 10 and 11, Schefflera actinophylla can be planted outdoors in a full sun location, and these conditions seem to give the plant the best chance to flower. The schefflera blooms are most likely to appear in summer. Flowering is not reliable outside the tropics, so this likely won’t happen every year. Schefflera arboricola has been known to bloom indoors. Giving the plant as much sunlight as possible may help encourage it to flower, and this species, too, is most likely to bloom in summer.[图片]What Do Schefflera Flowers Look Like? Depending on the species, schefflera blooms can be white, pink, or red. In Schefflera actinophylla, each inflorescence, or flower spike, is quite long and showy, with many small flowers emerging along its length. The inflorescences are grouped in clusters at the end of branches. These clusters have been described as looking like the tentacles of an upside-down octopus, which accounts for one of the plant’s common names, “octopus-tree.” Schefflera arboricola produces more compact flowers on small inflorescences that look like small white spikes. Its flower spikes also grow in clusters that have a surprising appearance, especially on a plant that is so well known for its foliage. When your schefflera plant flowers, it is definitely a special occasion. Be sure to take some photos before these schefflera blooms fade!

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2017年08月20日

The schefflera houseplant is a popular plant and comes in many varieties. The most well known are the umbrella tree and the dwarf umbrella tree. One of the reasons the plant is popular is because schefflera plant care is so easy, but, while schefflera care is easy, the plant does need to be cared for. Keep reading to learn more about growing schefflera and keeping it healthy and lush.[图片]Schefflera Plant Care Instructions There are two very important parts to proper schefflera care. The first is correct sunlight and the second is proper watering. Light – Schefflera plants are medium light plants, which means that they need bright but indirect light. A common complaint about schefflera plants is that they get leggy and floppy. This problem is caused by too little light. Making sure that you are growing schefflera in the right kind of light will help prevent leggy growth. On the other side, you do not want to place a schefflera houseplant in direct, bright light, as this will burn the leaves. Water – When growing schefflera, be aware that watering correctly will help to keep your schefflera houseplant healthy. To water correctly, wait until the soil in the pot dries out and then thoroughly soak the soil when you water. Often, people will over water their schefflera plant and this will eventually kill it. Yellow leaves that fall off the plant is a sign that you may be watering too much.[图片]Additional care of schefflera includes pruning and fertilization. Pruning – Your schefflera may also need to be pruned occasionally, especially if it is not getting quite enough light. Pruning a schefflera is simple. Just cut off what you feel is overgrown or leggy back to a size or shape you like. Schefflera houseplants rebound quickly from pruning and will look even fuller and more lush shortly after pruning. Fertilizer – You do not need to fertilize your schefflera, but if you would like to, you can give it a half solution water soluble fertilizer once a year. Schefflera plants are poisonous to people and animals, if eaten. It is not often fatal but will cause a burning sensation, swelling, difficulty swallowing, and in severe cases, difficult breathing.[图片]Schefflera Houseplant Pests and Diseases Schefflera plants are not often bothered by pests or disease, but it can happen occasionally. Spider mites and mealybugs are the most common pests that affect schefflera plants. In light cases of infestation, washing the plant with water and soap will normally eliminate the pests. With heavier infestations, you many need to treat the plant with an insecticide like neem oil. Also, be aware that pests typically attack this plant if it is stressed. If your schefflera has pests, this is likely a sign it is either getting too little light or too much water. The most common disease that affects schefflera is root rot. This disease is brought on by overwatering and poor drainage in the soil.

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2017年08月20日

Rubber tree plants, (Ficus elastica) tend to get rather large and need to be pruned in order to control their size. Overgrown rubber trees have difficulty supporting the weight of their branches, resulting in an unsightly display and possible snapping of the branches. Pruning a rubber tree plant isn’t overly complicated and it actually responds well to pruning. [图片]When to Prune a Rubber Tree Rubber tree plants are quite resilient and rubber tree trimming can basically take place any time of the year. In fact, branches that are out of sorts can be removed without any damage to the plant. However, these plants will usually respond faster to pruning during late spring or early summer—around June. This is also considered a good time for taking cuttings, as they are thought to root quicker and easier.[图片]How to Trim a Rubber Tree Plant Whether it’s simply a subtle, orderly trim or a hard, heavy prune, rubber tree trimming takes little effort and results in a nice, full plant. As long as you keep in mind the fact that this plant grows back from the next nodes down, you can cut it to whatever length and style you want. Before you prune a rubber tree, make sure your pruning shears are clean and sharp. It may also be a good idea to wear gloves to prevent any irritation from its milk-like sap.[图片]Step back and study the shape of your tree to get an idea of how you would like it to look. Prune rubber tree plant by making your cuts just above a node — where the leaf attaches to the stem or where another stem branches off. You can also prune just above a leaf scar. Remove about a third to one-half of the plant’s branches but take care not to remove too much foliage than is necessary. New growth will eventually appear from these cuts so don’t be alarmed if the plant seems a bit haggard looking following pruning.

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2017年08月20日

If your rubber plant is losing leaves, it can be alarming. It can leave a plant owner wondering, “Why do leaves drop off rubber plants?” There are many reasons for leaves falling off rubber tree plant.[图片]Causes of Rubber Tree Plant Leaves Falling Off Light Change – A common reason for a rubber plant losing leaves is a change in the light. Many times, this will happen when you bring your rubber tree plant in from outdoors, and this change can cause a total drop of the rubber tree leaves. A few rubber tree leaves may fall off the plant with the change from summer to fall, when light levels change. Acclimating the plant slowly when you bring it indoors and shining a few plant lights on the rubber tree will help keep the light levels up and keep the rubber plant from losing leaves. Pests – Pests are another common reason for rubber tree plant leaves falling off. In particular, rubber tree plants are susceptible to being infested with scale bugs, and these pests will cause the leaves to drop off until the plant is treated.[图片]Treat scale or other pests with an insecticide like neem oil. Humidity – Rubber tree plants need higher humidity. Houses can be dry, especially in the winter when the heat is on. This lack of humidity can cause leaves falling off rubber tree plant. To correct this problem, mist the rubber tree plant daily or set the plant on a tray of pebbles filled with water to increase humidity. Air Drafts – Rubber tree plants are susceptible to cold air and while your home may be the right temperature for rubber tree plant, cold drafts from windows or doors in your home may be hitting the plant and causing the rubber tree leaves to fall off. Move the plant away from any draft windows or doors that may be letting a draft in when it opens.[图片]Over Fertilization – Rubber tree plants are frequently killed with kindness from their owners. One way this happens is that a rubber tree owner will fertilize the plant too often, and this causes a rubber plant to lose leaves. Rubber tree plants only need to be fertilized once in awhile. They need very little feeding. Over Watering – Another way that rubber tree owners can over care for their plant is by over watering the plant. When a rubber tree plant is over watered, it can shed its leaves. Only water the plant when the top of the soil is dry.

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2017年08月20日

Rubber trees are hardy and versatile houseplants, which leads many people to wonder, “How do you get a start of a rubber tree plant?” Propagating rubber tree plants is easy and means that you will have starts for all of your friends and family. Keep reading to learn how to propagate a rubber tree so that you can give your friends a free rubber tree plant.[图片]Propagate a Rubber Tree Plant with Cuttings Rubber tree plants can grow very tall and this means an indoor rubber tree occasionally needs to be pruned. After pruning, don’t throw out those cuttings; instead, use them to propagate a rubber tree plant. Propagate a rubber tree plant from cuttings starts with getting a good cutting. The cutting should be about 6 inches long and have at least two sets of leaves. The next step in how to start a rubber tree plant from cuttings is to remove the bottom set of leaves from the cutting. If you would like, you can dip the cutting in rooting hormone. Then, place the rubber tree cutting in moist but well-draining potting soil. Cover the cutting with either a jar or clear plastic, but make sure that the intact leaves do not touch the glass or plastic. If you need to, you can cut the remaining leaves in half, removing the half that is not attached to the stem. Place the rubber tree plant cutting in a warm place that is lit by only indirect light. In two to three weeks, the rubber tree cutting should have developed roots and the covering can be removed. [图片]Using Air Layering for Propagation of a Rubber Tree Plant Another way to propagate a rubber tree plant is by using air layering. This method basically leaves the “cutting” on the rubber tree while it is rooting. The first step in propagating a rubber tree with air layering is to choose a stem to make into a new plant. The stem should be at least 12 inches long, but can be longer if you would like. Next, remove any leaves immediately above and below the area where you will be rooting the stem, then take a sharp knife and carefully remove a 1-inch wide strip of bark that goes all the way around the stem. You should have a “naked” ring that goes around the stem of the rubber tree plant. Remove all of the soft tissue in that ring, but leave the hard center wood intact.[图片]After this, dust the ring with rooting hormone and cover the ring with damp sphagnum moss. Secure the sphagnum moss to the stem with a plastic covering. Make sure the moss is completely covered. The plastic will help keep the sphagnum moss damp as well. In two to three weeks, the stem of the rubber tree should have developed roots at the ring. After it has developed roots, cut the rooted stem from the mother plant and repot the new plant.

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2017年08月20日

Cacti and succulents make outstanding landscaping plants. They require little maintenance, grow in a variety of climates, and are easy to care for and grow. Most will even tolerate neglect. These plants are also well adapted to potted environments, making them excellent candidates for growing indoors as well. [图片]Types of Cacti Cacti vary in size, color, shape and growing habits. They may grow in upright columns, spreading clumps or spiny balls. They might even be found cascading over large rocks or in hanging baskets. Cacti are available in numerous varieties too, many of which produce stunning flowers. While many types of cactus are native to desert climates, most will tolerate a number of growing conditions. This versatility makes cactus landscaping possible nearly anywhere. Some popular types of cacti found in landscape settings include: Prickly pear cactus – known for its broad, flat prickly stems, of which the tips turn coral colored in bright sun. Barrel cactus – resembles spine-covered barrels. Cholla cactus – has thin round stems and is quite attractive when used as a focal point within the landscape. Pincushion cactus – resembling a small pincushion with its tiny spines sticking out from its round ball-like shape, it makes an interesting addition to the garden. Totem pole cactus – characterized by their large height and spineless column shape. Organ pipe cactus – grows in clusters that look similar to its name-organ pipes. [图片]Cactus Landscaping Tips When landscaping with cactus and succulent plants, you should always do your homework first. Learn more about their individual growing requirements and try to match these requirements to that of your landscape. Cactus plants have a number of survival tactics that allow them to adapt to a particular environment; however, it’s always better to choose those that are more likely to thrive in your particular area. Including a variety of cacti that share similar growing needs but with different heights and textures will add interest to the cactus garden. [图片]Growing Cactus Outdoors When growing cactus outdoors, choose a sunny, sloped location whenever possible. Locating cactus on a slope allows for better drainage, which is vital when dealing with these plants. Depending on the types of cactus chosen, beds should be about 6 to 12 inches deep with well-drained soil specially formulated for cactus plants. This can be purchased or mixed yourself using two parts potting soil, two parts sand, and one part gravel. Cactus plants also enjoy a moderate layer of mulch such as pebbles, rocks, or similar substance. Once established, cacti require little maintenance and very little, if any, water.

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2017年08月20日

Succulent garden design is appropriate for warm, temperate and even cold season locations. In cold climates, it is not always possible to have a succulent garden outside, but you can grow them indoors in containers. Learn a little about how to plan an outdoor succulent garden and bring some fun shapes and textures to your landscape. [图片]Succulent Garden Design Succulents are generally drought tolerant plants that have thick leaves where they store moisture. Although succulent plants are very tolerant of dry conditions, they do need water, especially during the growing season. Succulent garden design should consider the location, soil type, configuration, moisture level, and the types of plants. Some succulents are more drought tolerant than others. Do a little research on the wide variety of succulent shapes and sizes before starting a succulent garden outside. For instance, cacti are succulents and hold water in their stems and pads. Other types of succulents are not spiny but have swollen leaves with a myriad of growth habits. There are spreading or drooping types, such as burro’s tail; spiky, wide plants like agave; or tall, columned varieties such as old man’s cactus. Plan the design with enough space for the plants to fill in as they grow. [图片]Succulent Outdoor Plants Growing a succulent garden outside starts with plant choices. If you are a novice, begin with plants that are easy and foolproof. Sedum and sempervivum are easy to grow and adaptable to bright, sunny locations or even slightly dappled areas. Whatever types of plants you choose, succulents need well-drained soil. They can thrive in cracks and crevasses, rockeries and sandy or gritty soils. Succulents in cool season areas will do best in containers that are brought indoors for the winter. Try some kalanchoe, aloe, echeveria and aeonium. Have fun with the unique sizes, shapes and textures of these plants. Use succulent outdoor plants as part of a xeriscape area of the garden, to conserve water and provide interest and color. [图片]How to Plan an Outdoor Succulent Garden When you’ve chosen your plants and are ready for planting, you will need to know how to plan an outdoor succulent garden. Choose a sunny location and plot the space you want to fill. Check the soil conditions and drainage by digging a hole at least 1 foot deep and filling it with water. If the water drains within a half hour, the soil is sufficiently porous. If not, simply mix in 3 inches of sand or other gritty material to increase the texture and drainage. Use taller specimens at the center of the area and spreading species at the edges or dotted among the larger plants as ground cover. Top the area with a layer of pebbles or small rocks to act as mulch. This will help prevent weeds and conserves moisture while allowing evaporation of excess water. [图片]Care of Succulent Garden Plants Succulent plants tolerate periods of dryness, but should receive regular water during the growing season. When soil is dry a couple of inches down, water deeply and then let the soil dry out again between waterings. The most common problem with succulents is rot. Keeping the stems out of the soil and providing drying periods between irrigation will help prevent this. Also, water from the base of the plant to keep leaves dry. Watch for insect pests and combat them with sprays of water and horticultural soap spray. Remove dead stems and offsets during the care of succulent garden plants. Offsets are easy to start as a completely new plant. Put them in a well-drained potting mix and care for them until roots are full and healthy, then plant them in a new area of the garden.

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2017年08月20日

It can be frustrating to find one of your prized cactus plants leaking sap. Do not let this put you off, however. Let’s take a look at reasons for sap leaking from a cactus plant. Why is My Cactus Oozing Sap? There are several reasons for sap leaking from a cactus. It could be an indication of a fungal disease, pest problem, tissue injury or even the result of freezing or excess sun exposure. You will need to become a detective and round up the clues to diagnose the issue by the process of elimination. It’s important to verify that correct care is given, as improper cultivation can also be a cause of a cactus oozing sap. Put your frock coat and bowler on and let’s get investigating! [图片]Cultivation Problems Oozing cactus plants can be the result of a number of different things. Overwatering, poor drainage, lack of light, too much concentrated sun and even the type of water you use can all cause tissue damage and release cactus sap. When improper cultivation is applied, the plants can experience rot, sunburn and even mechanical damage. Since cacti store water in their stems and pads, any ruptured area will weep fluid. Most cacti will heal from small injuries but their vigor may be greatly reduced. [图片]Diseases In the mid 1990’s, botanists were concerned about the Saguaro cacti, which were oozing black sap. The cause was widely debated but never fully determined. Pollution, ozone depletion and the removal of the larger “nurse” saguaro plants likely contributed to the giant cacti’s health problems. More common to the home grower, however, are fungal and bacterial diseases that cause a defensive reaction in the plant, resulting in sap leaking from a cactus. The cactus sap may appear to be brown or black, which indicates a bacterial problem. Fungus spores may be soil or air borne. Repotting the cactus every two years can help minimize the chance of bacterial issues and keeping the soil dry to the touch reduces the formation of fungal spores. [图片]Pests Cacti that are growing outside can fall victim to many pests. Birds can peck at the trunks, rodents chew on the flesh and smaller invaders (such as insects) may wreak havoc on the plants. For instance, the cactus moth is a scourge of cacti. Its larva cause yellowing of the skin and oozing cactus plants. These moths are predominantly found on the Gulf Coast. Other larval forms cause cactus oozing sap during their burrowing. Watch for their presence and combat by manual removal or organic pesticides. [图片]What to Do to Save Oozing Cactus Plants If the flow of sap is severe enough to damage the health of your plant, you may be able to save it by replanting or propagating the healthy portion. If the top is still vigorous and firm, but the lower part of the plant is where the injury has occurred, you can cut it off. Remove the healthy part and let the cut end dry out for a few days and callus. Then plant it in clean cactus mix. The cutting will root and produce a new, hopefully healthier plant.

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2017年08月20日

Cacti are remarkably durable and low in maintenance. The succulents need little more than sun, well drained soil and rare moisture. The pests and problems common to the plant group are minimal and usually easy to surmount. Cactus problems may range from sucking pests, like whitefly, to common rots from bacteria or fungal disease. One of the telltale signs of a problem is a soft, mushy cactus. [图片]Why is My Cactus Going Soft? The arid gardener may ask, “Why is my cactus going soft?” Likely causes are disease, cultivation and improper site and ambient conditions. Cacti generally have low moisture needs. They thrive in temperatures above 70 to 75 F. (21-24 C.) in sunny locations and require little supplemental nutrients. Potted plants need good drainage holes and a soil mix with plenty of grit. In-ground plants have similar requirements. As with any plant, cacti can become diseased or damaged. A common problem is soft spots in the flesh of the plant. These may be discolored or corky around the spot and the center is mushy and wet. The reasons for such spots may be disease or simply mechanical injury to the pads and stems of the cacti. Cactus rot issues must be dealt with quickly to prevent spread to the rest of the plant and serious loss of vigor, which may become permanent. [图片]Cactus Problems with Fungal and Bacterial Diseases Bacteria and fungus are introduced to the plant from openings in the flesh. The open areas may be from insect or animal activity, damage from inanimate objects or heavy weather, such as hail. The action of injury isn’t important, but the damage from fungal spores or bacteria is crucial. Warm, moist conditions accelerate the production of fungi spores and increase bacterial production. Once the organism takes hold in your plant, you will see soft, mushy cactus. Symptoms to watch for include small sunken spots, discolored scabs, round soft areas surrounded by fruiting bodies, and black or other colored dots on the surface of the cacti skin. You may even notice some oozing of your cactus plants. [图片]Treating Cactus Rot Issues Cactus problems that have gotten into the root usually result in a slowly dying plant, while topical issues in the upper body can be treated easily. Most cacti respond well to excising the diseased tissue. Use a sharp sterile knife to dig out the damaged flesh and allow the hole to dry out. Don’t water overhead as the wound closes. If the damage has infected the roots, there is very little you can do. You can try to repot the plant, removing diseased soil and replacing it with sterile soil. You should wash the roots off well before replanting in fresh potting medium. A soft, mushy cactus can also be saved by taking cuttings and letting them root for a fresh new plant. Allow the cutting to callus over for a few days before you insert it into sand. Rooting the cutting may take several weeks. This method of propagation will produce a healthy cactus that is the same as the parent plant.

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2017年08月20日

Cacti are one of my favorite types of plants to grow inside all year and outside in summer. Unfortunately, the ambient air tends to stay moist during most seasons, a condition which makes cacti unhappy. Cactus potting soil can enhance drainage, increase evaporation and provide the dry conditions that cacti favor. What is cactus mix? This medium promotes optimum health for your cactus and mimics the natural gritty, arid and low nutrient soils they grow in naturally. You can purchase the mixture or learn how to make cactus soil yourself. [图片]Cactus Growing Conditions The cacti families are succulents which store moisture in their pads, stems and trunks to use during dry and drought periods. They are generally found in desert conditions, although a few are tropical to sub-tropical. The plants favor sunny locations with plenty of heat, areas which have little to no rainfall and harsh soil. The majority of the family will make excellent houseplants due to their minimal needs and forgiving nature. These hardy plants do need water but not on the scale that the average plant requires. They are unique in form and flower with an ease of care that borders on neglect. They prefer a cactus growing mix that is partially sand or grit, some soil and a pinch of peat moss. [图片]What is Cactus Mix? Cactus potting soil is available in most nurseries and garden centers. It forms a better basis for cactus roots than regular soil and keeps roots and stems from sitting in moisture, which can cause rot. The right planting mix for cactus plants has superior drainage and will dry out quickly after watering. Cacti will harvest the moisture they need immediately to store in their bodies and excess water needs to be evaporated or drained to prevent fungal disease and rot. Commercial mixes use the classic elements these plants grow in naturally and add peat, which tends to hold moisture. Once the peat has dried out, it is hard to get it to absorb water again which makes the pot too dry. The glass really is half empty in this case because not enough water will stay in the medium for the plant to uptake. Homemade cactus growing mix can be tailor made for any type of cactus. Just like our personal tastes, one mix is not always right for every variety of cactus and growing region. [图片]How to Make Cactus Soil It is actually cheaper to make your own mixture. If you live in a very arid climate, you will want the addition of peat in your potted plants but be careful and don’t let it dry out completely. In most other areas and in the home interior, the plants are fine with one part washed sand, one part soil and one part gritty amendment such as pebbles or even pot shards. A very different mix combines five parts potting soil, two parts pumice and one part coir for a mixture that dries out evenly. You may have to tweak the soil recipe depending on where you are using your cactus growing mix and what variety of succulent you have. [图片]How to Know if You Need Different Soil Sadly, by the time you notice a decline in the health of your cactus and think of repotting it in a different planting mix for cactus plants, it may be too late. A better option is to choose right the first time. Determine where your cactus naturally occurs. If it is a desert species, use the simplest blend of clean fine sand, grit and soil. If you have a tropical species, add peat. Plants such as Euphorbia are remarkably adaptable to almost any soil and can even thrive in dry potting soil. Give the plants a hand by choosing unglazed containers that evaporate excess moisture and watering deeply only when the soil is completely dry but not crusty.

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