Rose replant disease<\/strong> is probably the most common example of specific replant disease<\/strong>, which can affect several other trees in the rose family, including all the fruit trees<\/a> commonly grown in the UK.<\/p> It occurs when you try to plant a new rose right in the same soil<\/strong> one was growing before. Rose sickness starts from the roots, and is not always totally obvious above ground. <\/p> The most obvious symptom is severe stunting<\/strong>, where the rose grows only about 50% as much as it should be; if you don\u2019t know what to expect, this might not be obvious.<\/p> When you dig up a rose with replant disease to wash and inspect the roots<\/strong>, they will not have grown much, and you should see that fine roots are rotted and black-brown, not healthy and dirty-white colour.<\/p> Research into the exact pathogens causing the disease is ongoing, but the main one seems to be fungi in the Nectriaceae family, which includes Coral Spot fungus<\/a>, probably assisted by some bad Streptomyces bacteria, and nematodes. There are no roses resistant to it: if there were, they would be leading our bestselling roses<\/a>.<\/p> No, there is no topical cure for a rose that is already suffering from replant sickness. <\/p> By the time the condition is apparent, it\u2019s too late. If you don\u2019t want to grow something else, prevention the problem is possible. <\/p>
The soil itself is referred to as \u201crose sick\u201d.<\/p>Identifying Rose Replant Sickness<\/h3>
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What Exactly Causes Rose Replant Disease?<\/h3>
The nematodes are probably a significant factor in spreading the other pathogens, and it has been noted that replant disease is milder in heavy clay soils, which are less favourable to nematodes than lighter, rougher soil types.<\/p>Is there a cure for roses with replant disease?<\/h3>
You may as well throw away the sickly rose; even if you replant it again, it will struggle to establish. <\/p>Preventing Roses Replant Disease<\/h2>