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Roses

Roses. Classification of roses Modern garden roses Old garden roses Species roses

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  • Roses

  • Classification of rosesModern garden roses Old garden roses Species roses

  • Types of modern rosesHybrid teasGrandiflorasFloribundasShrubClimbingRamblingPatioMiniatures

  • Grandiflora (large-flowered bush)

  • Floribunda (cluster-flowered bush)

  • Shrub rosesDavid Austin (English)Dr. Griffith BuckKnockoutBelindas Dream

  • Old (European) garden rosesAlbaBourbonCentifoliaChinaDamaskGallicasHybrid muskMossNoisettePortlandTea

  • Alba roses

  • Centifolia roses

  • Damask roses

  • Species RosesWildWild hybridsRugosas

  • Buying rosesBarerootPotted

  • Planting roses

  • Planting roses

  • Rose maintenanceFertilization Once per month during growing season

  • Rose maintenanceSanitationTo limit diseaseRemove leaf litter, pruning wasteDo not compost!Sanitize pruners 10% clorox, 3-5 minutes (but corrosive over time)Rubbing alcohol

  • Pruning

  • PruningDeadheading

  • Yearly pruningPrune when dormant (between leaf fall and spring bud break; not in winter)Remove dead/dying canesRemove pencil-thin canesTear off suckers on grafted roses

  • Rose insect pestsJapanese beetlesSpider mitesThripsAphids

  • Rose pests- japanese beetles

  • Japanese beetle control

  • Japanese beetle grub control

  • Rose pests - aphids

  • Rose pests - thrips

  • Rose diseasesBlack spotPowdery mildewBotrytis blight (gray mold)

  • Blackspot- a fungal disease

  • Viral disordersRose yellow mosaic (RYMV)Rose (common) mosaic (RMV)

  • Disease managementGood sanitation (planting bed, tools)FungicidesDaconil, thiomyl (systemic), baking soda

  • 120 rose cultivars, breeding lines, and species were planted in field trials at two sites (College Station and Overton with Dr. Brent Pemberton) in Texas in 1993 and 1994 to evaluate their resistance to the blackspot fungus. The plants were set on 3 foot centers with 4 replications in a randomized block design. Rating were done 3 to 4 times per year for percent of the leaflets with blackspot and leaf defoliationPlant disease resistant cultivars

  • Easy going

  • Pest control

  • Biological pest controlWheel bugs

  • Biological controllink

  • Propagating rosesSeed propagationRequires 3-4 weeks stratificationHardwood cuttingsSemi-ripe cuttingsBud graftingLayering

  • Hardwood cuttings3 months old

  • Rose InformationAmerican Rose Society

    Top- David Austin; bottom-knockoutLower left-hybrid muskRugosa (white); Nearly wild (pink)Repeated sevin use can result in increased mitesBottom left pirate bugs eat thrips; bottom right predatory mites eat spider mites