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Feeding Roses A good formula for feeding roses is: - Two parts fish meal
- Two parts dried blood
- One part cottonseed meal
- One part wood ashes
- One part phosphate rock
- One part greensand
Diseases and Pests of RosesHealthy roses can usually ward off diseases and pests; however, roses that are weakened by bad growing conditions can succumb to several diseases and insects. During the early spring always rake mulch and debris from the base of the plant to cut down on fungus, and insect infestations. Leaves that yellow, or fall from the bush during a normal growing season probably are infested with disease or insects and should be removed from the area. Leaves that are on the shrubs that show signs of disease should be removed and disposed of. Always wash your hands before touching another rose bush. If you happen to be pruning a diseased bush always disinfect shears and other equipment before moving on to the next plant. Diseases and Pests of RosesNameCauseSymptomsRemedy
Black SpotFungusBlack and discolored spots appear on leaves. Leaves yellow and fall offGather and dispose of leaves. Mulch ground thoroughly
CankerFungusWounds in canes don't healPrune all damaged canes back
MosiacVirusLeaves turn yellow along the veinsPlant should be destroyed. Be sure plants have enough iron, nitrogen, and potassium
MildewFungusWhite powder spreads over leaves and canes, and causes buds to dieFull sun, adequate ventilation, and care to not get the leaves wet during watering should keep this at bay
RustFungusOrangey-brown masses on the undersurfaces of leavesDestroy infected leaves
ThripsInsectSilvering of the leaves. Malformed flowers and leavesControl with horticultural oils, or pyretherins
Japanese BeetleInsectChewed leaves and flowersHand pick or use Milky Spore bacteria, a natural predator of the beetle
Leaf RollersInsectDamage to leaves, rolled leavesUse BT, bacteria that only harms caterpillars
AphidsInsectDamage to leavesBuy ladybugs, they are a natural enemy of aphids
source : http://garden.lovetoknow.com/wiki/Gardening:_Caring_for_Roses | 
Post time 26-4-2011 07:42 PM
Author
malas gile tgk garden yg makin messy... banyak daun kena blackspot..
.. korang kalo takde LS itu 1 kesilapan bosar!!!
).....baru ngencesssss skit......klu tak, kena guna kanta pembesar nk tgk bunga akak.....hahaha....jgn mare 
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