Saturday, April 28, 2012

Mimosa Pudica, The Sensitive Plant Can Thrive In One Of Two Types Of Life Cycles

mimosa pudica
Mimosa pudica, also known as sensitive plant or sleeping grass, is a small, short-lived, perennial most valued for its interesting foliage. The plants are not tolerant of cold temperatures and die back when exposed to frost. In the United States, Mimosa pudica is grown most frequently as a houseplant, where its growing environment can be strictly controlled, or as an outdoor annual. In tropical climates, the plant may become weedy or invasive when not controlled.
  
Mimosa pudica requires full sun to partial shade and rich, moist, well-drained soil to thrive. When growing in containers, a soil mixture made of two parts peat moss, two parts loam and one part sand is recommended to provide adequate drainage and fertility. Weekly watering keeps the soil moist but not soggy, which sensitive plant prefers. Plants benefit from weekly fertilizing during the spring and summer months using a balanced fertilizer diluted to half-strength, but feeding should be reduced to one per month during winter. Mimosa pudica needs warm growing conditions and temperatures should not drop below 65 degrees Fahrenheit or yellowing of leaves and stems may occur.
  
The methanolic extract of leaves of Mimosa pudica at the dose of 200mg/kg body weight per oral was studied for the hepatoprotective effect using Carbontetrachloride induced liver damage in wistar albino rats. Methanolic extract showed significant (p<0.05) hepatoprotective effect by lowering the serum levels of various biochemical parameters such as serum glutamic oxaloacetate transaminase (SGOT), serum glutamic pyruvates transaminase (SGPT), alkaline phospatase (ALP), total bilirubin (TBL), total cholesterol (CHL) and by increasing the levels of total protein (TPTN) and albumin (ALB), in the selected model. These biochemical observations were inturn confirmed by histopathological examinations of liver sections and are comparable with the standard hepatoprotective drug Silymarin (100mg/kg bodyweight i.p.) which served as a positive control. The overall experimental results suggests that the biologically active phytoconstituents such as flavonoids, glycosides alkaloids present in the methanolic extract of plant Mimosa pudica, may be responsible for the significant hepatoprotective activity and the results justify the use of Mimosa pudica as a hepatoprotective agent.
  
Mimosa pudica is best propagated from seed. For the best results, soak seeds in warm water overnight or until they become swollen, and sow immediately in seed-starting soil mix, covering with soil two to three times their thickness. Keep the growing medium moist at all times. Do not over-water or allow it to dry out completely. Place in bright light and wait for germination, which takes two to three weeks at 70 degrees Fahrenheit. Transplant into pots when seedlings reach about 4 inches in height, and resume regular care for the remainder of the plant's life.
  
Mimosa pudica is an evergreen sub-shrub that reaches no larger than 5 feet in height and produces small, globe-shaped flowers in summer. The plant's most fascinating feature is its fern-like leaves that close and fold up when touched. This reaction is known as a seismonastic movement, or a physical reaction to shock. At night, the leaves also close as a reaction to the absence of light, which is known as a nyctonastic movement. The plant's common name derives from this sensitivity to outside stimuli.
  
In young plants, the Mimosa pudica has erect stems that transform to 5-foot long creeping or trailing stems. Pale, lilac pink flowers in summer look like fluffy balls, yet each cluster holds individual flowers. Leaves of most species are bipinnate, where leaflets give rise to other leaflets. The sensitive plant folds its foliage at dark and reopens in light. Fruit consists of two to eight pods. Each pod holds brown seeds. Certain species have poisonous roots.
  
The sensitive plant can thrive in one of two types of life cycles: as an indoor annual ornamental with showy flowers; as an outdoor perennial plant in the tropics. Habitat includes moist, waste ground, open plantations, and well-drained soils with open sun. The Mimosa pudica can exist as a dense ground cover, with thorny stems that make grazing difficult and prevent reproduction of other species. The sensitive plant is drought and frost tender, and sensitive to over-watering. On dry, wild lands, this plant poses a fire hazard.
  
A fungus distributed by the soil, Fusarium oxysporum, enters through the plant roots, and blocks the vascular or water conducting system. This fungal pathogen prevents the transportation of vital water and nutrients to the leaves. Wilting and death can result.
  
Mimosa vascular wilt disperses by wind, water, animal actions, birds and human activities. Disease spreads from infected trees to healthy trees. With no known cure for mimosa vascular wilt, avoid spreading the fungus, such as by moving the soil. If the mimosa is in tree form, remove and destroy the trees by burning.

Sunday, April 22, 2012

Gardenias Which Have A Fresh Calming Fragrance Are Symbolic Of The Spirit Of Motherhood


gardenia
If you are among those people who have been searching for a plant that has an amazing fragrance, then you definitely have found it in the gardenia . For anyone blessed with a green thumb, your gardenias are going to be items of beauty with their white-colored scented blooms. This particular plant grows fastest in tropical climates. So if you reside in a tropical climate, gardenias should be abundant.There are a lot of people out there that have no luck with growing gardenias but then there are still those few that have very good luck with growing gardenias. Sounds to me like you have some magic powers when it comes to growing plants. At least when it comes to plants that no one else can grow. Let's first agree that although these Gardenia flowers sparkle like moondust with their pure white petals, although they send off a thick unforgettable fragrance so enchanting it goes right into perfume, growing them is pure science.Gardenia is a genus of flowering plants comprised of about 142 species belonging to the family of Rubiaceae.

Gardenias are evergreen shrubs which can grow from two to twenty feet or more in height in their natural habitat. The leaves are glossy, dark green growing from about one to ten inches long depending on the species. Gardenia flowers are white or yellow in color and develop either a single or a cluster of blossoms. The flowers of many species are known for their intoxicating sweet scent.

Gardenia taitensis, also called Tahitian Gardenia and Tiare Flower, is one of only a few plants indigenous to Polynesia. This evergreen tropical shrub can grow as tall as twelve feet. The flowers are white, composed of five to nine petals and very fragrant.Inhabitants of Polynesia use these highly fragrant flowers as necklaces. These floral necklaces are called "Ei" on the Cook Islands, "Hei" on Tahiti and "Lei" on Hawaii.On some Pacific islands wearing these gardenia flowers indicates one's relationship status. When the flower is worn on the right ear, the person is available. When the flower is worn on the left ear, the person is taken.

The flowers of Gardenia taitensis are used to make Monoi Tiare Tahiti, which is a perfume oil, by infusing the flowers in coconut oil. This process is called "Enfleurage". The process uses odorless fats that are solid at room temperature to capture the fragrant compounds released by plants.In addition, the flowers are also used in highly priced perfumes, like Tiare by Ormonde Jayne and Tiare by Chantecaille.Other popular Gardenia species include Gardenia brighamii, Gardenia cornuta and Gardenia nitida, to name a few.

Gardenia plants prefer partial sun and should be protected from the hot afternoon sun during the summer months. They grow and flower well under grow lights where night temperatures should not go below 60 to 65 degrees which translates to 15 to 18 degrees Celsius.

No fuss, no muss. And you can get up close and personal with your Gardenia, you can eat your Gardenia, and there will be nothing poisonous there to make you sick. I love that most of all. If you keep your Gardenia potted, it will most certainly dry out very quickly. Growing one of these is not like growing them indoors. The great outdoors is full of surprises, and these Gardenias do not take dry soil kindly. Watch it very carefully if you do that. I do believe however the fresh air is good for everyone after a winter indoors.

Tuesday, April 17, 2012

Cactus One Plant Named "Children Of The Sun"

Cactus
Most of the Cactuses are thorny plants, no water lover, but being precious in full light. Therefore the cactus plants were called "children of the sun".

During the summer, keep your cactus outside; thorny cactus loves sunshine, the cactus with few thorns has to stay in light, without sun. Put the cactus with no thorns in semi-light. As a trick, we recommend you to add in pot over the soil some small river stones .which are very helpful in the hydrating and moisture process. In this case, you don't have to water it, just maybe spray the soil.In winter, the plants have to be kept in light places with moderate temperature (10-12 degree centigrade). The watering will be rare, maybe once in two weeks. Our advice is not to water it. Anyway, if you do it, don't reach the plant.

There are hundreds of varieties perfectly suited for you home. Every species comes with its own specific care instructions and needs. It is important to find out from the nursery or wherever you bought your cactus just exactly how to care for the plant. Most are relatively low maintenance but some of the more exotic species have specific and exacting requirements.

The most common cause of death of all cacti is not watering them properly. When you plant your cactus cutting, do not water it for about two to four weeks. Then, water your cactus cutting every 2-3 weeks. It's important to remember that cacti thrive in the desert and that there's not much water in the desert. So, do your cactus a favor and treat it like it's in the desert.

 As a trick, let in free air the cutting to heal it self for a few days, then pot it in sand. Keep it without watering, just spraying sometimes, in warm and light shady place.

Tuesday, March 27, 2012

Types And Identification Of The Fir Trees

Most of the cut conifers sold as Christmas trees are nothing, but fir trees. They belong to the family Pinaceae, and classified under the genus name Abies. Sharing taxonomic plant family with the pines, there are about 48-55 fir trees types. Nearly all the varieties have short needles, measuring a few inches in length. These evergreen trees are prized for their adorable, pyramid like canopy shape. One of the interesting fir trees facts is that the evergreen foliage is retained for more than 5 years before shedding. They are fast growing evergreen trees, adapted in moist, well-drained soil, and areas with cool summer temperatures.

Fir Trees - Types and Identification

There are two characteristic features that help in fir tree identification. The first is the presence of a small-sized suction cup at the base of the needle leaf that connects it with the twig, and secondly the development of erect and cylindrical shaped cones. The purplish female cones are developed in the topmost branches below which has the green, pendant shaped male cones. The female cones after fertilization ripens and breaks open in autumn to release seeds. Popular fir trees types that are grown as houseplants or specimen trees are discussed below.

Noble Fir Trees
These are tall fir tree types that can grow to as high as 200 feet, and 5 feet diameter. In fact, they are the largest varieties of all true fir species. The leaves are silvery green in color and ranges from 1-1 ½ inch in length. The high popularity of noble firs (Abies procera) as Christmas trees is attributed to long-lasting leaves that retain for a longer period, even in cut trees. They are also used for making outdoor wreaths and garlands.

Fraser Fir Trees
These fir trees types (Abies fraseri) are named after the renowned botanist, John Fraser who have studied them in detail. The adult trees at maturity grow to about 80 feet. The needle leaves are flattened, ½ to 1 inch long, dark green in color, possesses strong fragrance and arranged spirally in the branches. The distinctive features of these landscaping trees are their small size and upward directing branches.

Douglas Fir Trees
Can you believe the Douglas fir trees live for more than 1000 years? Yes, these highly fragrant, Christmas trees survive for 500 years and more on an average. They are not true firs, hence the scientific name for these evergreen trees is Pseudotsuga menziesii. The foliage is flat, bluish-green in color and measure about 1 to 1 ½ inch in length. Distinctive features include forked bracts, winged seeds and furrowed barks.

Balsam Fir Trees
Balsam fir trees (Abies balsamea) or blister firs are native to the cool regions of North America and Northeastern America. The leaves are ¾ to 1 ½ inch length, and barks of young trees have conspicuous resin blisters. These evergreen trees attain a height of about 15-60 feet at maturity, with a spread of about 25-30 feet. These fir trees types are common Christmas trees, especially in Northeastern America.

Grand Fir Trees
Also called giant fir trees, they are represented by the scientific name, Abies grandis. The common name is coined with reference to its height, which measures about 300 feet. They are easily identifiable from other types of fir trees by their lustrous green, needle-shaped leaves, arranged in two rows in a single plane. When crushed, the leaves give a citrus scent. Giant firs are planted as ornamental trees in formal gardens and large public parks.

If you have a fir tree at home, check the leaf scars left on the twigs after you pick the needles. Nearly all fir trees types are economically important for production of aromatic oils, herbal medicine and paper. Though the wood of these coniferous trees is valuable for making rough timber and plywood, it doesn't meet the qualities of a good timber.

Sunday, March 11, 2012

How Plans Fight Diseases

Scientists have shed new light on how plants fight diseases caused by bacterial pathogens.  Plants are like all other living things in that they are susceptible to disease. Generally this type of plant is quite hearty when cared for properly and is only typically susceptible to a couple of different types of diseases. If you know what the diseases are and what to look for, you can usually catch the disease early on so it can be treated as quickly as possible. The more quickly the rubber plants disease is treated the less likely it is to affect the plant long term.

Oedema is one type of rubber plants disease.  This is a disease that comes about when the roots of the plant soak up water faster than the water can be used by the plant.  What happens is that the root structures fill with water and the water pressure builds up in the cells of the leaf, which causes the leaves to look blistered.   

Oedema will often look like blisters on the plant.  They may start out the same color as the rest of the plant but then change to a more hardened form and turn white, tan or brown and even take on an almost wart like appearance.  Usually if the problem is not treated the leaves will begin to drop off the plant, the plant will begin to look weak, and then it will stop growing all together.  This disease is almost always seen in the later parts of the winter, but may also occur when the soil the plants are in is warm and wet and the air is cool and moist as well. 

"Some scientists have shown that these proteins block signaling transduction pathways in the plant, which eventually weakens plant immunity. We are introducing a fresh perspective on this topic, namely, that the pathogens evolved strategies to directly attack the production of plant antimicrobial compounds, such as isoflavones, thus compromising the plant''s defense mechanism," said Ma.
Once affected it can be hard to reverse the effects of Oedema.  To avoid it, the plants should be kept in places where the relative humidity is below 70% during the winter months.  Plants should be spaced further apart if this is a continuing problem to allow for more air flow.  Most plants may suffer during the winter months but then recover in the spring and summer months due to better water absorption. 

Rubber plants are also susceptible to powdery mildews.  Some plants are able to withstand the mildew but the weaker ones may actually stop growing and even begin to die.  The mildew usually appears on the plant as a gray or white power that coats some or all of the parts of the plant.  The spots often start out as small spots that will eventually overtake most, if not all, of the surface of the plant.

First, the pathogens inject virulence bacterial proteins, called HopZ1, through needle-like conduits into the plant cells. These proteins then largely reduce the production of the isoflavones and promote disease development.

However, by sensing the presence of HopZ1, the plants mount a robust resistance against the pathogen, including the production of a very high amount of isoflavones. At this point, the pathogen must come up with new strategies by either changing the kind of proteins it injects into the plant, not injecting any proteins at all, or injecting virulence proteins in a way that helps them escape detection by the plant. In this way, the virulence bacterial proteins and the plant host engage in an endless "arms race."