|I planted three knockout rose bushes three yrs. ago one is dying in part is there a type of food they need to flourish they have been beautiful until now HELP
|Answer from NGA
October 8, 2009
|Fertilizer won't help if there is a disease present or if the dying plant is suffering from root rot. Try to figure out why the one is dying. Does the soil drain well? Has it been watered regularly? Do you see any holes in the canes near the bottom of the plant? Do you see insects or growths of any kind? All of these are clues to the problem. Cane borers can enter a cane and their feeding will kill everyting above where they entered. Galls or warty growths can be the result of insect feeding. Check the plant over carefully and prune out anything that doesn't look quite right. After pruning you should see healthy new growth. Be sure to water your plants on a regular basis. If you want to feed them, use a specialized Rose Food in amounts as suggested on the fertilizer label. Hope your knockout rose recovers!
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