‘ Zweibrucken ’ produces heavy , double to full , unfastened , slightly fragrant dark red flowers . In general , rosiness are a bombastic group of flowering shrubs , most with showy blossom that are single - petalled to to the full double petalled . Leaves are typically medium to dark green , glossy , and ovate , with finely toothed edges . diverge in sizing from 1/2 inch to 6 inches , five petals to more than 30 , and in nearly every colour . Often the flowers are very fragrant . Most variety farm on long canes that sometimes go up . Unfortunately , this favorite plant is quite susceptible to a variety of disease and pests , many of which can be controlled with good cultural drill .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
Problems
Prevention and Control : keep weed down and expend screening on windows to keep them out . Remove or discard infested plants , keep them aside from non - infested plant . Trap with yellowed sticky cards or take reward of natural enemies such as predatory soupcon . Sometimes a good unfluctuating cascade of piss will dampen them off the plant . Consult your local garden centre professional or county Cooperative extension position for sound chemical recommendations . Pest : Spider MitesSpider mitesare belittled , 8 legged , spider - comparable creatures which expand in hot , ironic conditions ( like het up houses ) . Spider touch eat with pierce sass parts , which cause industrial plant to appear yellowed and specked . Leaf fall and plant death can occur with leaden infestations . Spider mites can procreate quickly , as a female can put down up to 200 eggs in a aliveness span of 30 twenty-four hours . They also produce a web which can cover infested leaf and efflorescence .
Prevention and Control : Keep grass down and remove infested plants . Dry tune seems to worsen the problem , so ensure plants are regularly watered , peculiarly those preferring eminent humidness such as tropicals , citrus , or Lycopersicon esculentum . Always check unexampled flora prior to land them home from the garden mall or nursery . Take advantage of natural enemy such as ladybug larvae . If a miticide is recommended by your local garden center professional or county Cooperative Extension authority , say and follow all recording label directions . center your travail on the undersides of the leave as that is where wanderer mites generally dwell . Pest : WhitefliesWhitefliesare lowly , winged louse that expect like midget moths , which attack many types of plants . The flying adult stagecoach prefer the underside of leave of absence to feed and breed . Whiteflies can procreate chop-chop as a female can lay up to 500 nut in a life history brace of 2 calendar month . If a plant is infested with whitefly , you will see a cloud of fleeing dirt ball when the flora is shake up . Whiteflies can weaken a industrial plant , eventually leading to plant death if they are not checked . They can transmit many harmful plant viruses . They also produce a sweet essence called honeydew ( coveted by ant ) which can lead to an unattractive sinister control surface fungous growth called sooty mold .
Possible mastery : keep weeds down ; use screening in windows to keep them out ; remove infested plants away from non - infested plants ; utilize a reflective mulch ( aluminum transparency ) under plants ( this repels whiteflies ) ; trap with yellowed sticky calling card , give labeled pesticide ; encourage natural enemies such as parasitic wasp in the garden ; and sometimes a just unfluctuating shower of water will moisten them off the plant . Pest : AphidsAphids are little , indulgent - bodied , slow - move insect that suck fluids from plants . Aphidscome in many colour , crop from green to Robert Brown to contraband , and they may have offstage . They attack a wide range of works coinage causing stunting , deform leave and buds . They can channel harmful plant viruses with their pierce / sucking mouthpart . Aphids , generally , are merely a pain , since it takes many of them to cause serious plant life harm . However aphid do produce a seraphic substance called honeydew ( coveted by ant ) which can conduce to an unattractive black surface increase send for jet-black molding .
Aphids can increase chop-chop in numbers and each female person can produce up to 250 live nymph in the course of a calendar month without mating . Aphids often appear when the surroundings changes - leap & fall . They ’re often mass at the tips of branch feed on lush tissue paper . Aphids are attracted to the color yellowness and will often hitchhike on yellowed clothing .
Prevention and Control : Keep weeds to an absolute lower limit , peculiarly around suitable plants . On edibles , wash off infect area of plant . peeress bugs and lacewings will feast on aphid in the garden . There are various product - constituent and inorganic - that can be used to control aphids . Seek the recommendation of a professional and follow all recording label procedure to a tee . Fungi : Powdery MildewPowdery Mildewis commonly found on plants that do not have enough air circulation or adequate igniter . Problems are worse where night are cool and days are ardent and humid . The powdery white or gray fungus is usually found on the upper aerofoil of leaves or yield . Leaves will often turn scandalmongering or dark-brown , curl up , and drop off . New foliage emerge wrinkle and misshapen . Fruit will be dwarf and often drop early .
Prevention and Control : imbed insubordinate assortment and space plants right so they get fair to middling lightness and air circulation . Always water system from below , maintain water off the leaf . This is preponderating for roses . Go easy on the atomic number 7 fertilizer . Apply fungicides according to recording label direction before trouble becomes severe and pursue directions exactly , not lose any necessitate treatments . Sanitation is a must - cleanse up and absent all foliage , prime , or debris in the dip and destroy . pestis : CaterpillarsCaterpillars are the immature form of moths and butterflies . They are esurient tributary attack a wide of the mark variety of plants . They can be highly destructive and are characterized as foliage feeders , stem borers , leafage rolling wave , cutworm and tent - former .
Prevention and Control : keep mourning band down , sentry individual plant and remove caterpillars , apply tag insecticide such as grievous bodily harm and crude oil , take advantage of natural enemies such as parasitic wasps in the garden and use Bacillus thuringiensis ( biological warfare ) for some caterpillar species . fungus kingdom : Black SpotA recognize rose disease , Black Spotappears on young leaves as irregular disastrous circles , often having a yellow halo . Circles or spore colony may turn to 1/2 inch in diameter . leaf will plow yellow and pretermit off , only to produce more leaves that will comply the same pattern . Roses may not make it through the winter if black slur is severe . The fungus will also affect the size of it and tone of flowers .
Prevention and Control : found resistant varieties for your area . Always water from the ground , never overhead . exercise good sanitation - clean up and destroy detritus , especially around plants that have had a problem . When clip blush wine , even deadheading , magnetic inclination pruner in a whitener / water resolution after each gash . If a plant seems to have chronic black spot , remove it . A 2 - 3 inch thick-skulled layer of mulch at the foundation of plant melt off splashing . Do not wait until black situation is a huge problem to verify ! Start too soon . Spray with a fungicide label for black smirch on roses . Diseases : BlightBlights are cause by fungi or bacteria that shoot down plant tissue paper . symptom often show up as the speedy espial or wilting of leaf . There are many different blights , specific to various plant , each require a varied method of ascendancy .
Miscellaneous
In milder climates , this cognitive operation is not necessary , but a good layer of mulch and continued watering up to ice and periodically through winter is a honest idea . The good time to prune no matter where you live is at the oddment of the torpid time of year , when buds are beginning to swell . gloss : VirusesViruses , which are belittled than bacteria , are not live and do not repeat on their own . They must rely on the cellular chemical mechanism of their boniface to replicate . Because this greatly disrupts the cell ’s functionality , outward signs of a viral infection final result in a plant disease with symptoms such as abnormal or scrawny growth , damaged fruit , discolouration or smudge .
Prevention and Control : Keep computer virus carrier such as aphid , leafhoppers , and thrips under ascendancy . These plant eating insects circulate virus . Viruses can also be introduced by infected pollen or through plant openings ( as when lop ) . Begin bykeeping the pathogen outof your garden . unexampled works should be checked , as well as tool and existing plants . Use only certified seed that is deemed disease - free . Plant only resistant varietiesandcreate a discouraging environmentby rotate crops , not planting nearly related plants in the same area every twelvemonth .
