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Rusty Dogwood
Greetings one and all
hope you had a good summer - here comes the rain (at last) I bought 3 dog-wood plants from RHS-Wisley earlier and planted them out. All displayed signs of rust within weeks. I've been cuttting out the infected areas all year. One gave up some weeks back, another now looks sick beyond redemption and the third is just about hanging on. Any clues as to the cause? and more importanly a suggested treatment? or should I give up and try again with new stock? Nothing else in the bed is affected. Thanks -- William Tasso - http://williamtasso.com |
#2
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Rusty Dogwood
Any clues as
to the cause? and more importanly a suggested treatment? or should I give up and try again with new stock? Nothing else in the bed is affected. Thanks -- William Tasso - http://williamtasso.com Cause of many infestations on plants is imbalance/deficiency of something within the plant itself. The suggested remedy for rust infestation is the use of a high potassium fertiliser (which probably means that a deficiency of potassium within plants is a contributing factor with regard to rust). Remove the leaves that are affected. Spray with a systemic fungicide. Sometimes when I think a plant is possibly too 'ill' to make a recovery, I take a cutting, or do something similar to ensure I don't actually 'lose' the plant all together, though I may actually lose the 'original' plant. I hope that makes sense. I'd suggest removing the odd stem from each of your Cornus and removing all leaves, wash in a detergent, then place in a clean container filled with a reasonable amount of water. Cornus like lots of water and often root when left in water, even when you don't want them too. Hope this helps. Dave. |
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