‘ Thor ’ is a large - flowered mounting rise which grow bright red flowers with bombastic , glossy and dark light-green leafage . flower for about 4 hebdomad in the summer . In universal , roses are a large radical of flowering shrubs , most with showy flower that are single - petalled to in full duplicate petalled . Leaves are typically medium to dark green , glossy , and ovate , with finely toothed edge . Vary in size of it from 1/2 inch to 6 inches , five petal to more than 30 , and in nearly every color . Often the flush are very fragrant . Most varieties produce on long canes that sometimes rise . alas , this favorite works is quite susceptible to a variety of disease and pests , many of which can be controlled with good cultural practices .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
Problems
Prevention and Control : keep weeds down and use screening on window to keep them out . murder or discard overrun plants , keep them away from non - infested plant . Trap with yellowed sticky cards or take advantage of natural enemies such as predatory hint . Sometimes a good steady shower of body of water will wash them off the plant . Consult your local garden center professional or county accommodative elongation office for effectual chemic recommendations . Pest : Spider MitesSpider mitesare small , 8 legged , spider - like beast which thrive in hot , dry conditions ( like heated houses ) . Spider mites feed with piercing mouth parts , which make plant to appear yellow and stippled . foliage drop and industrial plant last can pass off with heavy plague . Spider mites can multiply promptly , as a female can put up to 200 eggs in a life span of 30 day . They also produce a web which can cover infested leaves and flowers .
Prevention and Control : Keep pot down and remove infested plants . Dry air seems to aggravate the problem , so verify plant life are on a regular basis watered , peculiarly those opt gamy humidity such as tropicals , citrus fruit , or tomatoes . Always check new plants prior to bringing them home from the garden meat or nursery . Take reward of natural enemies such as ladybug larvae . If a miticide is recommend by your local garden center professional or county Cooperative Extension office , read and come all recording label directions . center your efforts on the undersides of the leaves as that is where spider mites by and large live . Pest : WhitefliesWhitefliesare small , winged insects that front like tiny moth , which attack many type of plants . The fly adult stage choose the underside of leaves to feed in and stock . whitefly can reproduce cursorily as a female can lay up to 500 eggs in a life sentence couple of 2 month . If a flora is infest with whiteflies , you will see a swarm of fleeing louse when the plant is disturbed . Whiteflies can weaken a plant , eventually leading to implant end if they are not check . They can transmit many harmful industrial plant viruses . They also produce a sweet substance called honeydew ( coveted by ants ) which can lead to an unattractive shameful surface fungal development called sooty mildew .
potential controls : keep weeds down ; use screening in windows to keep them out ; take away infested plants away from non - infested plant ; apply a reflective mulch ( Al transparency ) under plants ( this repels whitefly ) ; trap with yellow sticky cards , apply mark pesticides ; promote instinctive enemies such as parasitic wasps in the garden ; and sometimes a secure unfaltering cascade of urine will lave them off the plant . Pest : AphidsAphids are lowly , soft - bodied , slow - moving insects that suck fluids from plants . Aphidscome in many colors , ranging from green to brown to blackened , and they may have wings . They attack a wide range of flora species causing acrobatics , deform leaves and buds . They can transmit harmful flora viruses with their piercing / give suck mouthparts . Aphids , generally , are merely a nuisance , since it takes many of them to stimulate serious plant damage . However aphids do produce a fresh substance called honeydew ( coveted by ants ) which can lead to an untempting black surface growth called sooty mold .
Aphids can increase quickly in numbers and each female person can produce up to 250 alive nymph in the trend of a month without mating . Aphids often come along when the environs changes - spring & fall . They ’re often mass at the tips of branches feeding on succulent tissue . Aphids are draw in to the color yellow and will often thumb on yellow clothing .
Prevention and Control : Keep weeds to an absolute lower limit , especially around desirable plant . On edibles , lave off infected region of plant . Lady bugs and lacewing fly will feed in on aphids in the garden . There are various Cartesian product - organic and inorganic - that can be used to control aphids . Seek the recommendation of a professional and abide by all recording label subroutine to a football tee . Fungi : Powdery MildewPowdery Mildewis commonly found on plant life that do not have enough air circulation or equal light . Problems are worse where nights are cool and sidereal day are warm and humid . The powdery white or gray fungus is usually institute on the upper surface of foliage or yield . Leaves will often grow xanthous or brown , draw in up , and discharge off . New foliation go forth crisp and misshapen . Fruit will be overshadow and often drops early .
Prevention and Control : Plant immune miscellany and space plants decent so they receive adequate Christ Within and atmosphere circulation . Always water from below , sustain H2O off the foliage . This is preponderant for roses . Go easy on the nitrogen fertilizer . Apply antifungal agree to label direction before trouble becomes severe and follow directions exactly , not lack any required treatments . Sanitation is a must - clean up and dispatch all leaves , flowers , or debris in the fall and destroy . blighter : CaterpillarsCaterpillars are the young shape of moths and butterfly . They are voracious feeders attacking a all-embracing variety of plants . They can be highly destructive and are characterise as leaf feeder , base stone drill , leaf rollers , cutworm and tent - formers .
Prevention and Control : keep widow’s weeds down , scout case-by-case plant and polish off cat , put on labeled insecticide such as soaps and oils , take reward of innate enemy such as parasitic wasps in the garden and use Bacillus thuringiensis ( biological war ) for some caterpillar species . kingdom Fungi : Black SpotA known rose disease , Black Spotappears on young leaf as irregular disastrous rophy , often possess a yellowed halo . Circles or spore colony may grow to 1/2 in in diameter . leaf will turn yellow and throw off off , only to produce more leave of absence that will keep an eye on the same pattern . blush wine may not make it through the winter if blackened spot is grievous . The fungus will also affect the size and quality of flowers .
Prevention and Control : establish resistant varieties for your area . Always water system from the ground , never overhead . apply good sanitation - clean up and put down debris , especially around plant life that have had a problem . When pruning roses , even deadheading , pickpocket pruners in a bleach / water solution after each cutting off . If a plant seems to have inveterate black spot , hit it . A 2 - 3 in thick layer of mulch at the fundament of plant reduces splosh . Do not wait until black blot is a huge trouble to verify ! commence early . Spray with a fungicide labeled for black office on rose . disease : BlightBlights are cause by fungus kingdom or bacterium that kill plant tissue paper . Symptoms often show up as the speedy spotting or wilting of foliage . There are many dissimilar blights , specific to various plants , each requiring a varied method of ascendency .
Miscellaneous
In milder climates , this process is not necessary , but a good layer of mulch and preserve lachrymation up to frost and sporadically through winter is a just idea . The good time to lop no matter where you live is at the end of the dormant time of year , when buds are begin to swell . Glossary : VirusesViruses , which are lowly than bacteria , are not living and do not duplicate on their own . They must bank on the cellular mechanisms of their host to replicate . Because this greatly disrupts the cell ’s functionality , outward signs of a viral transmission result in a plant disease with symptoms such as unnatural or scrubby maturation , damaged fruit , discolouration or spots .
Prevention and Control : Keep computer virus carriers such as aphids , leafhoppers , and thrip under control . These plant alimentation insects circularise viruses . Viruses can also be bring out by septic pollen or through industrial plant openings ( as when pruning ) . Begin bykeeping the pathogen outof your garden . New plants should be turn back , as well as peter and survive works . Use only certified seed that is deemed disease - liberal . Plant only resistant varietiesandcreate a discouraging environmentby rotating harvest , not planting closely link works in the same area every year .
