Post on 15-Jan-2016
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